Yazar "Aksel, Murat" seçeneğine göre listele
Listeleniyor 1 - 20 / 23
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe A comparative analysis of coherent structures around a pile over rigid-bed and scoured-bottom(Pergamon-Elsevier Science Ltd, 2021) Aksel, Murat; Yagci, Oral; Kirca, V. S. Ozgur; Erdog, Eryilmaz; Heidari, NaghmehEnvironmentally friendly piled coastal defence structures gained a particular significance in recent years, given these structures do not interrupt the longshore/cross-shore sediment transport. Flow around an emergent pile is known to generate certain typical coherent flow patterns depending on the flow and boundary conditions, as well as geometry. When the bed is erodible, the scouring process, which typically takes place around the pile, significantly alters these generated coherent structures. The primary objective of this study is to understand the influence of the presence of a scour-hole around the pile on the coherent flow structures, time-averaged kinematic characteristics (i.e. mean flow and turbulence) as well as dynamic pressure characteristics. To achieve this objective, a three-dimensional numerical model was utilized. The model that solves the flow around the emergent pile on rigid-bed was calibrated by using a spatially and temporally high-resolution experimental dataset. Later on, high-resolution DEM data of a scoured-bottom from flume experiments were imported into the calibrated model, and the model was run with identical hydraulic conditions with the experiments. Then, the outputs of the two models, with rigid-bed and with scoured-bottom conditions, were comparatively analysed. It was seen that as a consequence of the presence of a scour-hole, lee-wake vortices were dramatically weakened behind the cylinder. Instead of that, a couple of pronounced large-scale counter-rotating streamwise vortices (LSCSV) behind the cylinder dominate the flow domain to a great extent. Results suggest that the presence of a scour-hole on the bed renders the pile more streamlined against the flow.Öğe A numerical study on the effect of vent/wall area ratio on Trombe wall thermal performance(Emerald Group Publishing Ltd, 2021) Kaya, Ercan Serif; Aksel, Murat; Yigit, Sadik; Acikara, TurgutTrombe walls are the most widely applied passive systems that utilise solar energy for heating massive walls. Although studies have been undertaken in the fields of Trombe wall application and design, the research on the effect of the vent area and the number of vents on the performance of a Trombe wall remains limited. In this context, a parametric study investigating the effect of the vent-to-wall-area ratio on Trombe wall performance was conducted. A computational fluid dynamics model was employed for validation analysis. The results were verified by experimental measurements of temperature. At each step of the parametric study, the vent-to-wall-area ratio in the Trombe wall model was increased by 2% starting from the unvented case, and the results were simulated per ratio. In this study, temperature measurements of the glazing, thermal wall and space were employed as the evaluation criteria. The results of the parametric runs showed that a Trombe wall with eight separate air vents and an 8% vent-to-wall-area ratio provides the maximum heating performance. Furthermore, a monolithic vent configuration with an 18% vent-to-wall-area ratio performed slightly better compared with other configurations of monolithic air vents.Öğe Analysis of the Hydrodynamic Characteristics in a Rectangular Clarifier under Earthquake-Induced Sloshing(2023) Aksel, MuratWastewater treatment plants, which play a crucial role in protecting the hydrosphere, are earthquake-prone infrastructures with large tanks and sensitive equipment. Damage to the structures in such facilities during seismic activity on the lithosphere can cause environmental pollution and threaten public health. Since the units/tanks in the treatment plants are not of different geometries and sizes, they may exceed the freeboard of the wave height due to the sloshing event. In this study, the sloshing dynamics of a rectangular type of clarifier were investigated. First, numerical parameters, boundaries, and initial conditions were validated using the results of an experimental campaign. Secondly, model conditions were kept constant, and geometry was enlarged (i.e., scaled-up) to investigate the variation of hydrodynamic forces near vulnerable equipment (such as scrapers and weirs) in clarifier. The numerical model was run for characteristics of two different earthquakes (i.e., Chi Chi-1999 and Kocaeli-1999). The results showed that dynamic pressure values near vulnerable equipment increased up to 120 times higher than the operating conditions. The maximum sloshing wave heights were calculated as 1.2 m and 1.45 m for Chi Chi (1999) and Kocaeli (1999) earthquakes, respectively.Öğe Analysis of the Hydrodynamic Characteristics in a Rectangular Clarifier under Earthquake-Induced Sloshing(Turkish Chamber Civil Engineers, 2023) Aksel, MuratWastewater treatment plants, which play a crucial role in protecting the hydrosphere, are earthquake-prone infrastructures with large tanks and sensitive equipment. Damage to the structures in such facilities during seismic activity on the lithosphere can cause environmental pollution and threaten public health. Since the units/tanks in the treatment plants are not of different geometries and sizes, they may exceed the freeboard of the wave height due to the sloshing event. In this study, the sloshing dynamics of a rectangular type of clarifier were investigated. First, numerical parameters, boundaries, and initial conditions were validated using the results of an experimental campaign. Secondly, model conditions were kept constant, and geometry was enlarged (i.e., scaled-up) to investigate the variation of hydrodynamic forces near vulnerable equipment (such as scrapers and weirs) in clarifier. The numerical model was run for characteristics of two different earthquakes (i.e., Chi Chi -1999 and Kocaeli-1999). The results showed that dynamic pressure values near vulnerable equipment increased up to 120 times higher than the operating conditions. The maximum sloshing wave heights were calculated as 1.2 m and 1.45 m for Chi Chi (1999) and Kocaeli (1999) earthquakes, respectively.Öğe Basin-scale factors in emergence of midchannel islands: a process-based morphometric analysis(Springer, 2023) Heidari, Naghmeh; Yagci, Oral; Aksel, MuratMidchannel islands were conventionally considered undesirable additional hydraulic resistance to flow for many years and tended to be removed from the channels as a measure against flood. Today, it is known that these geomorphic units provide key eco-geomorphological services in the active corridor of natural waterways. This study examined the dynamics behind the occurrence mechanism of midchannel islands considering basin-scale (i.e., land use, elevation, slope, form factor, and relief) and fluvial (i.e., sediment yield) variables. Eleven drainage basins were selected as samples from the different ecoregions on Earth. Morphometric and hydrological characteristics were determined using hydrological datasets and satellite-based images by means of ArcGIS. Sediment delivery magnitudes for each examined basin were calculated based on an empirical expression. In addition, the development process of isolated midchannel islands was investigated by quantifying their planform morphometric features. The basin-scale analysis showed that the channel slope, i.e., gravity-induced factors, controls the emergence location of MCIs to a great extent, and the basin sediment yield impacts the density (i.e., number of islands) of MCIs in a unit length of the river. Furthermore, the morphometric analysis of MCIs in the individual scale revealed that when MCIs develop from the preliminary stage to the advanced stage, the contraction effect becomes more prominent which increases the streamlining effect.Öğe Bed load transport estimations in Goodwin creek using neural network methods(2021) Aksel, Murat; Dikici, Mehmet; Çokgör, ŞevketEquations used for calculating bedload transport rates are generally developed based on the assumption of steady flow conditions.This implies that the relationship between bedload transport, discharge, flow depth, and shear stress is single-valued. One of thereasons for adopting such an approach is that almost all the pertinent laboratory data on bedload transport have been obtained fromexperiments performed under steady flow conditions. Similarly, the scarcity of accurate bed load field data obtained during thepassage of floods is attributed to the difficulties, which at times can become life-threatening, encountered under such conditions.Provision of data under challenging conditions may lead to the inability to provide data in some cases and interruption in datacontinuity. It is difficult to make predictions using classical statistical science in discontinuous or lack of data situations. Artificialneural networks (ANN) are useful in predicting when the data is insufficient. In this study, two frequently used ANN applications,radial basis functions, and generalized regression neural network are employed to estimate the bed load data. It was seen that theANN estimations are more satisfactory compared to those of the conventional statistical methods results. It was shown that ANNestimations for gravel bedload data are more successful than the sand load data.Öğe Comparison of Drought Indices in the Case of the Ceyhan Basin(2021) Dikici, Mehmet; Aksel, MuratThe issue of mitigating the expected effects of drought has become quite prominent within the scope of planning, development, andmanagement of water resources affected negatively by climate change. An integrated management approach must be plannedprimarily for sustainable water management. To conduct drought risk analyses, a sufficient amount of data must be available. Thehistorical process of the basin must be known, and there must be a plan that is assessed with several indices. In this study, we carriedout drought risk analyses on the Ceyhan Basin using meteorological, hydrogeological, and hydrological data to determine indices andindicators available in the literature. We compared indices, examined the correlations among them, and reached an outcome. All ofthe study’s indices showed that the drought was in the same periodicity in the basin, and a slow progressing drought occurred in thebasin. When the trend of the last 50 years of precipitation in the basin is analyzed, it is evident that there is a general decrease. It hasbeen calculated that there is an extreme drought threat for the basin in the 20-year return interval. In a general view, decision-makersshall provide drought management plans for the basin.Öğe Comparison of Spi, Spei and Sri Drought Indices for Seyhan Basin(İstanbul Aydın Üniversitesi, 2019) Dikici, Mehmet; Aksel, MuratToday, mitigation of the adverse impacts of drought has gained considerable importance in the context of the management of water resources, which is adversely affected by climate change. In this context, to be able to achieve drought risk analyses, meteorological and hydrological data should be sufficient; if they are not, they should be completed. Seyhan Basin spread across the Seyhan River to an area of 2.203.544 ha, extending from Sivas to the Eastern Mediterranean. With 22.035 km2, the basin area constitutes 2.07% of Turkey's surface area. In this study, by using the meteorological and hydrological data of Seyhan basin between 1970 and 2016, drought risk analyses of the basin with the most widely used around the world SPI, SRI and SPEI drought indices were discussed. In first step of this study, incomplete data was completed with regional analyses. According to these indices, drought severity and magnitude were found. Analyses were performed according to 1, 3, 6, 9, 12, 18, 24, 48-month repeat intervals. Classification of droughts and threshold values were determined. The indices were compared, the correlation between them was examined, and drought risk analyses and drought maps were made separately for each index.Öğe Current Situation in the Evaluation of Plastic Wastes in Concrete(Alanya Alaaddin Keykubat Üniversitesi, 2022) Peker, Mustafa Altuğ; Ataş, Oğuzhan; Aksel, MuratThe rapid increase in population and raw materials used in industrial products such as electronics, automotive, and packaging increase the demand for plastic use every year. Plastic products, which are useful for industrial use, cause pollution in the environment with the depletion of their economic life. It is desired to reduce environmental pollution by revaluing plastic products that have become waste through various methods. At the start of these evaluations, energy production, recycling, and making new things through incineration were talked about. Even if this conversion is completed, a significant amount of waste (35–55%) must be stored. Reducing the amount of waste by evaluating the stored plastic volume in concrete production can be an ideal solution. In this review article, studies on the use of plastic waste in concrete were examined in the literature. The examined studies evaluated the concrete properties, mechanical properties, and durability properties of concrete. In experimental studies, many different types of plastic have been used, such as micro, macro, and fiber. Studies in the literature have been evaluated in terms of the type of plastic, the parameter studied, and its effect on concrete performance, and are given in the results section. It has become an extremely useful compilation for researchers who will work on this subject.Öğe Dairesel Tipteki Çöktürme Havuzunun Deprem Altındaki Çalkalanma Analizi(2021) Aksel, MuratBüyük tanklar ve içinde hassas karıştırma ekipmanları bulunduran atık su arıtma tesisleri deprem açısından kritik altyapılardır. Depremler sırasında bu tür tesislerdeki yapıların hasar görmesi çevre kirliliğine neden olabilmekte ve halk sağlığına tehdit oluşturabilmektedir. Arıtma tesislerindeki gömülü havuzlar farklı geometri ve boyutlarda olmamasından dolayı çalkalanmaya bağlı dalga yüksekliğinin hava payını aşabilir. Bunu sonucunda deprem sırasında meydana gelebilecek taşmalar yeraltı suyunu kirleterek çevre problemine yol açabilir. Ayrıca bu havuzların içindeki yapısal olmayan elemanların deprem sırasında hasar görmesi sonucu arıtma birimleri devre dışı kalabilir. Bu durum deprem sonrasında tüm tesisin hizmet vermesini aksatacağı için halk sağlığını tehdit edecektir. Bu çalışma kapsamında Kocaeli il sınırları içinde yer alan Kullar Atıksu Arıtma Tesisindeki dairesel tipteki bir son çöktürme havuzunun Kocaeli 1999 deprem sinyali altındaki çalkalanma analizi sayısal modelleme yardımıyla incelenmiştir. Çalkalanmaya bağlı olarak havuz içinde 90 cm yüksekliğinde çalkantı dalgası ve havuz duvarının taban yakınında 5000 Pa hidrodinamik basınç hesaplanmıştır.Öğe Evaluation of pre- and post-fire flood risk by analytical hierarchy process method: a case study for the 2021 wildfires in Bodrum, Turkey(Springer Japan Kk, 2023) Yilmaz, Osman Salih; Akyuz, Dilek Eren; Aksel, Murat; Dikici, Mehmet; Akgul, Mehmet Adil; Yagci, Oral; Balik Sanli, FusunWildfires are regarded as one of the devastating natural disturbances to natural ecosystems, and threatening the lives of many species. In July 2021, a wildfire took place in the Mediterranean region of Turkey in multiple areas. In Bodrum, a town with high touristic value and attraction, approximately 17,600 hectares of forest have been affected by the wildfire. In this study, the fire-affected areas were determined using an analytical hierarchy process (AHP) and geographical information system (GIS). Rainfall, slope, distance from the stream, pre- and post-fire land use and land cover, elevation, curvature, topographic wetness index, and lithology were selected as the governing variables for the AHP model. The contribution of each variable was determined from the literature. Based on the model, it was found that the area with a very high flood risk increased from 8.6 to 18.4%, implying flood risk in a particular region doubled following the wildfire. Immediately after the forest fire, floods occurred in Mazikoy in the region and its surroundings. The model accuracy was tested by using randomly selected 61 points in and around the flooded area. The model accuracy was quantified by the receiver operating characteristic (ROC) curves method. Pre- and post-fire areas under curve (AUC) values were found 0.925 and 0.933, respectively, which implies that the prediction ability of the model is acceptably accurate. The study revealed that the model could quantify the increased flood risk for vulnerable areas after a forest fire. Such knowledge may aid local authorities in determining the priorities of the precautions that need to be taken after a forest fire.Öğe Evaluation of two vegetation indices (NDVI and VCI) over asi basin in Turkey(2021) Dikici, Mehmet; Aksel, MuratClimate change and global warming are among the issues that humanity is most concerned about the future. The growing drought and flood risks that increase despite the taken measures have led to the adoption of an integrated understanding on the topic of water management in recent years. To manage the increased risk of drought and to make sustainable planning, the dimensions of drought should be known first. For this purpose, many drought indices have been developed. The Normalized Difference Vegetation Index (NDVI) and Vegetation Condition Index (VCI), which determined by remote sensing, are two of these. In this study, in which the agricultural drought was analyzed with vegetation indices by taking into consideration the historical drought archive, the Asi Basin was addressed. The data of the Asi Basin, which covers an area of 7800 km(2) and was obtained from the Moderate Resolution Imaging Spectroradiometer (MODIS) and Advanced Very High-Resolution Radiometer (AVHRR) satellites, was used in this study. With the satellites benefited in remote sensing and with the Coordination of Information on the Environment (CORINE), where the layers of vegetation were determined, agricultural and forest areas were evaluated separately. The vegetation indices, which change with the increase in temperature, have revealed the necessity of a long-term drought management for the Asi Basin. Result of the work pointed that NDVI index is more appropriated to the Asi Basin than the VCI index to monitor drought.Öğe Experimental and numerical investigation of the effects of vortex finder geometry on cyclone performance(Yildiz Technical Univ, 2020) Karadeniz, Aykut; Ayvaz, Coşkun; Demir, Selami; Aksel, Murat; Saral, ArslanIn this study, nine different vortex finders (VFs) were used for investigations on cyclone pressure drop and particle collection efficiency. The collection efficiencies dropped for larger and smaller vortex finder dimension (VFDs). The collection efficiency increased with increasing vortex finder lengths (VFL). This increase was more obvious and statistically meaningful for the smallest VFD. Pressure drop in cyclones were mainly a function of VFD and increased with decreasing VFD. These effects were also observed in Computational Fluid Dynamics (CFD) simulations. A performance map was built for the design of a VF optimized for the highest collection efficiency and the lowest pressure drop. Based on the experimental results, a mathematical model was developed, and the nickel inhibition constants (KNi) were found to be 8.75 mg/L.Öğe EXPERIMENTAL AND NUMERICAL INVESTIGATION OF THE EFFECTS OF VORTEX FINDER GEOMETRY ON CYCLONE PERFORMANCE(Yildiz Technical University, 2020) Karadeniz, Aykut; Ayvaz, Coşkun; Demir, Selami; Aksel, Murat; Saral, ArslanIn this study, nine different vortex finders (VFs) were used for investigations on cyclone pressure drop and particle collection efficiency. The collection efficiencies dropped for larger and smaller vortex finder dimension (VFDs). The collection efficiency increased with increasing vortex finder lengths (VFL). This increase was more obvious and statistically meaningful for the smallest VFD. Pressure drop in cyclones were mainly a function of VFD and increased with decreasing VFD. These effects were also observed in Computational Fluid Dynamics (CFD) simulations. A performance map was built for the design of a VF optimized for the highest collection efficiency and the lowest pressure drop. Based on the experimental results, a mathematical model was developed, and the nickel inhibition constants (KNi) were found to be 8.75 mg/L. © 2020 Yildiz Technical University.Öğe Flow Structures around a Sphere Attached to the Bottom of a Prismatic Sloshing Tank: Problem-oriented basic research(Nan Yang Academy of Sciences Pte. Ltd, 2024) Aksel, Murat; Yagci, Oral; Valyrakis, Manousos; Kirca, V. S.OzgurThis study aimed to investigate the spatiotemporal variation of hydrodynamic variables around a sphere rigidly fixed to the bottom of a sloshing tank. The experimental measurement of the variations of dynamic variables around a body in a sloshing tank requires non-intrusive measurements that are usually expensive and sometimes inapplicable. Therefore, the numerical model could serve as a cost-effective tool for such problems. A two-stage analysis was con-ducted. In the first stage, an experimental study was carried out in a testing system comprising a water tank with uniaxial freedom of movement constructed on a monorail operated by a computer-controlled step motor. The primary objective of the experiments was to generate reliable data for calibrating the numerical model. During the experiments, the tank’s movements were recorded using an accelerometer and ultrasonic sensors with a sampling frequency of 200 Hz for each. The accelerometer and ultrasonic sensor data were used to impose the motion of the sloshing tank into a Reynolds-Averaged Navier-Stokes (RANS)-based numerical model. The video recordings, which comprised temporal fluctuations of the water surface, were used to calibrate the Model 1. Once the first numerical model was calibrated based on water surface level records using image processing methods, the second numerical model was constructed to accommodate a rigid spherical body with a 17 mm diameter connected to the bottom of the sloshing tank. The initial and boundary conditions used in the second numerical model were identical to those used in the first model to measure the spatiotemporal fluctuations of the surrounding spherical body’s kinematic and dynamic variables, respectively. The findings revealed that sloshing motion exerts a significant impact on the boundary layer separation process around the sphere. It was also witnessed that the stage of the sloshing motion controls the temporal lag between the pressure, velocity and water surface level. © 2024 by the author(s). Published by Nan Yang Academy of Sciences Pte. Ltd.Öğe Havza büyüklüğüne göre en uygun taşkın debisi hesap yönteminin bulunması - Doğu Akdeniz havzası örneği(Alanya Alaaddin Keykubat Üniversitesi, 2019) Dikici, Mehmet; Aksel, MuratTaşkın, son yıllarda iklim değişikliği ve şehirleşmenin de etkisiyle sayısız zararlara yol açan bir afet durumuna gelmiştir. Taşkının zamanını, büyüklüğünü ve şiddetini bilmek; etkilerini azaltmak için son derece önemlidir. Taşkının hidrolik modellemesinin yapılarak etki alanı tahmin edilebilir. Bunun için de maksimum taşkın debisini bilmek gerekir. İstatistik, sentetik ve hidrolojik model yöntemleri ile hesaplanan taşkın debisinin oluşturduğu taşkın hidrografı, hidrolik modele altlık olur ve taşkın risk haritaları belirlenebilir. Bu çalışmada Mockus, Snyder, Rasyonel ve DSİ sentetik yöntemleri ile taşkın frekans analizi ve ayrıca MIKE hidrolojik model programı yardımıyla taşkın pik debileri, 21682,8 km2 alana sahip Doğu Akdeniz Havzası için bulunmuştur. Sonuç olarak geniş bir havzada çok sayıda gözlem istasyonu yardımıyla da yapılan değerlendirmede, havza büyüklüğüne göre en uygun taşkın debisi tahmin yöntemleri belirlenmiştir.Öğe Investigation of Dilution Performance Depending on Discharge Conditions via Physical Modelling(Alanya Alaaddin Keykubat University, 2023) Karatas, Ahmet; Aksel, MuratWith the increase of industrialization, various facilities are being established on the water shores. There are some cases when these facilities negatively affect the marine ecosystem. One of them is thermal discharges. Thermal discharges can create negativities in the marine ecosystem. The reason for the occurrence of thermal discharges is that facilities such as power plants, iron and steel factories use large bodies of water such as the sea as a coolant to perform the cooling process. In order to prevent the occurrence of such negativities, the temperature change of the receiving medium depending on the temperature of the discharge water is restricted by law. Therefore, it has become important to determine the best dilution and the most economical system. In order to learn this, 3 different systems have been tested in a laboratory environment. In our first experiment, free falling jets, in our second experiment, jets parallel to the water were created from the water surface, and in our third experiment, a secondary reservoir was made on the water surface and discharged through three holes. Thermal clouds formed by jets have been studied.Öğe Midchannel islands in lowland river corridors and their impacts on flow structure and morphology:A numerical based conceptual analysis(Elsevier, 2021) Heidari, Naghmeh; Yagci, Oral; Aksel, MuratMidchannel islands (MCIs) are influential geomorphic units in regulating morphological and ecological dynamics in sand-dominated rivers. The primary objectives of the study were to understand a) the relationship between morphometric characteristics of the basin and the occurrence location of the MCIs, b) the role of MCIs on the hydraulic gradient and the other hydraulic variables along the reach, and c) the influence of island growth process on hydrodynamics in the wake and contraction regions. Spatial distributions of MCIs depending on the morphometric features of the three characteristic basins were considered. While the basin-scale analysis was conducted using GIS-based data, the reach and individual scale analyses were performed based on a Reynoldsaveraged Navier-Stokes (RANS) model. Uniform circular cylinder and island geometries were exposed to identical flow conditions. The expansion of these island geometries was mimicked both in rectangular and trapezoidal cross-sections. The variation of water surface slope and bottom shear stress variables, which greatly trigger the intensive bilateral interaction between hydrological-morphological-ecological elements in river corridors, depending on the growth of the island, was determined. The role of imposed island geometry on the secondary flow structure within the downstream cross-section of the island and streamwise velocity fluctuations in contraction regions were analyzed. The basin-scale analysis showed that with decreasing basin slopes, the family of islands emerged at a longer distance to the basin outlet. It was also seen that MCIs location is closer to the basin outlet forbasins with a lower aspect ratio. Besides, asymmetrical large-scale counter-rotating streamwise vortices were detected behind the MCIs based on numerical simulations. GIS-based data showed that this coherent flow structure brought about channel adjustments in downstream of the island. In addition to morphological consequences, it was hypothesized that this alteration in the flow structure due to MCI has potential impacts on riverine ecology. These impacts are increase in groundwater recharge, vertical exchange of surface-subsurface water, local heterogeneity in sediment characteristics (i.e., convenient fish spawning areas), and enlargement in the hyporheic zone.Öğe Morphodynamic Controls on Thermal Plume Dispersion at River Mouths: Insights from Field Data and Numerical Modeling(Mdpi, 2025) Heidari, Naghmeh; Aksel, Murat; Yagci, Oral; Erbisim, Mehmet Yusuf; Cokgor, Sevket; Valyrakis, ManousosThermal discharge from power plants causes significant concerns in aquatic environments. The purpose of this study is to evaluate how river mouth morphodynamics, particularly spit development and removal, influence the dispersion of thermal plumes. To achieve this, a case study was carried out at a coastal power plant in southwest T & uuml;rkiye, where thermal effluent is conveyed to the sea through a low-flow river. Field measurements combined with numerical modeling were used to analyze plume dynamics under varying spit configurations. Results revealed that the evolution of a spit on one side of the river mouth influences plume dispersion and redirects the mixing zone toward the opposite shoreline. Numerical simulations demonstrated that spit development reduces dispersion efficiency (by over 75%), while the physical removal of the spit significantly improves it, reducing temperature excess from 4-5 degrees C to 0-1 degrees C within the mixing zone, meeting safe environmental standards. The findings highlight the pivotal role of morphological changes in governing thermal discharge behavior and emphasize the importance of continuous monitoring and management strategies, such as periodic dredging, to ensure compliance with environmental regulations.Öğe Performance of hydraulic structures, lifelines and industrial structures during October 30, 2020 Samos-Aegean sea earthquake(2022) Toprak, Selçuk; Uçkan, M. Eren; Yılmaz, M. Tolga; Cüceoğlu, Faik; Gümüşay, Mustafa Ümit; Nacaroğlu, Engin; Kaya, Ercan S.; Aksel, MuratThis paper presents the effects of October 30, 2020 Samos-Aegean Sea earthquake on hydraulic structures, lifelines and industrial facilities which mainly located in the western cost of Turkey, within the borders of Izmir and Aydin Cities. These two highly populated cities are known for their importance in contributing country's economics by their industrialized areas. In addition, Izmir is the third largest city of Turkey with its high seismic hazard zone. Although some disruptions in the aftermath of the earthquake were occurred in gas and electricity services, these issues immediately identified, and all systems were managed to reoperate. Damages to the infrastructures were mainly due to the collapse of buildings and tsunami effects. No significant damages were reported on lifeline systems, large industrial facilities, and dams due to relatively low shaking intensity.
