Flow Structures around a Sphere Attached to the Bottom of a Prismatic Sloshing Tank: Problem-oriented basic research

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dc.contributor.authorAksel, Murat
dc.contributor.authorYagci, Oral
dc.contributor.authorValyrakis, Manousos
dc.contributor.authorKirca, V. S.Ozgur
dc.date.accessioned2026-01-24T12:20:56Z
dc.date.available2026-01-24T12:20:56Z
dc.date.issued2024
dc.departmentAlanya Alaaddin Keykubat Üniversitesi
dc.description.abstractThis 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.
dc.identifier.doi10.36956/sms.v6i2.1204
dc.identifier.endpage63
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85219681901
dc.identifier.scopusqualityQ3
dc.identifier.startpage42
dc.identifier.urihttps://doi.org/10.36956/sms.v6i2.1204
dc.identifier.urihttps://hdl.handle.net/20.500.12868/4704
dc.identifier.volume6
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherNan Yang Academy of Sciences Pte. Ltd
dc.relation.ispartofSustainable Marine Structures
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_Scopus_20260121
dc.subjectBoundary layer separation
dc.subjectDrag force
dc.subjectOscilla-tory flow
dc.subjectParticle hydrodynamics
dc.subjectSediment Transport
dc.subjectSloshing Tank
dc.subjectWake region
dc.titleFlow Structures around a Sphere Attached to the Bottom of a Prismatic Sloshing Tank: Problem-oriented basic research
dc.typeArticle

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