Flow Past Circular Cylinders in Tandem: A Comparison Between LES and IDDES

Keaton Harris, Marcel Ilie

Research output: Contribution to book or proceedingChapter

Abstract

Numerical studies of flow past circular cylinders in tandem are performed using both large eddy simulation (LES) and improved delayed detached eddy simulation (IDDES). The studies concern the effect of Reynolds number on the flow dynamics. The studies are performed for high Reynolds number flows, Re = 1.0x105, Re = 1.5x105, Re = 1.0x106, based on the cylinder diameter and the free stream velocity. The studies reveal that the IDDES is a promising tool for obtaining the unsteady wall-pressure fields, aerodynamic coefficients and the acoustic source functions. The studies also show that the presence of the second cylinder alters the wake of the tow cylinders. Therefore, a decay in the Strouhal number was observed when compared with the case of uniform flow past single circular cylinder.

Original languageAmerican English
Title of host publication2018 Fluid Dynamics Conference
DOIs
StatePublished - Jun 25 2018

Keywords

  • Comparison
  • Flow past circular cylinders
  • IDDES
  • LES
  • Tandem

DC Disciplines

  • Mechanical Engineering

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