THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

online first only

Computational fluid dynamics modeling patterns and force characteristics of flow over in-line four square cylinders

ABSTRACT
The Flow over four square cylinders in an in-line, square arrangement was numerically investigated by using the finite volume method with Computational Fluid Dynamics (CFD) techniques. The working fluid is an incompressible ideal gas. The length of the sides of the array (L) are equal. The analysis is carried out for a Reynolds number of 300, with center-to-center distance ratios, L/D, ranging from 1.5 to 8.0. To fully understand the flow mechanism, details in terms of lift and drag coefficients and Strouhal numbers of the unsteady wake frequencies are analyzed, and the vortex shedding patterns around the four square cylinders are described. It is concluded that L/D has important effects on the drag and lift coefficients, vortex shedding frequencies, and flow field characteristics.
KEYWORDS
PAPER SUBMITTED: 2017-02-11
PAPER REVISED: 2017-02-13
PAPER ACCEPTED: 2017-02-25
PUBLISHED ONLINE: 2017-03-03
DOI REFERENCE: https://doi.org/10.2298/TSCI170211035S
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