Turbulent Flow Around a Semi-Submerged Rectangular Cylinder

The present work is motivated by phenomena occurring in the flow field around structures partly submerged in water. A three- dimensional (3D) unsteady flow around a rectangular cylinder is studied for four different submergence ratios by using computational fluid dynamics (CFD) tools with the large...

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Bibliographic Details
Published in:Journal of Offshore Mechanics and Arctic Engineering
Main Authors: Arslan T., Pettersen B., Andersson H. I., MALAVASI, STEFANO
Other Authors: Arslan, T., Malavasi, Stefano, Pettersen, B., Andersson, H. I.
Format: Article in Journal/Newspaper
Language:English
Published: 2013
Subjects:
LES
bluff body
free surface
numerical simulation
PIV
Arctic
Online Access:http://hdl.handle.net/11311/756429
https://doi.org/10.1115/1.4025144
Description
Summary:The present work is motivated by phenomena occurring in the flow field around structures partly submerged in water. A three- dimensional (3D) unsteady flow around a rectangular cylinder is studied for four different submergence ratios by using computational fluid dynamics (CFD) tools with the large eddy simulation (LES) turbulence model. The simulation results are compared to particle image velocimetry (PIV) measurements at the Reynolds number Re1⁄412,100 and the Froude number Fr1⁄40.26. The focus in our investigation is on the characterization of the behavior of vortex structures generated by separated flow. Another target in the study is to obtain a better knowledge of the hydrodynamic forces acting on a semi-submerged structure. The computed force coefficients are compared with experimental measurements.

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