Numerical Simulation of Turbulent Flow Past a Cylinder Placed Downstream of a Step
Open Access
- 28 October 2022
- conference paper
- conference paper
- Published by MDPI AG in Environmental Sciences Proceedings
- Vol. 21 (1), 58
- https://doi.org/10.3390/environsciproc2022021058
Abstract
This study investigates the effect on the flow structure in a backward-facing step (BFSF) due to a cylinder placed downstream of the step. Numerical simulations were carried out using OpenFOAM with several turbulence models (standard k-ɛ, RNG k-ɛ, standard k-ω, and SST k-ω). The recirculating flow, the skin friction coefficient (Cf), and the pressure coefficient (Cp) of the bottom wall were comparatively analysed. The added cylinder modified the structure of flow and increased the skin friction coefficient (Cf) in the recirculation zone. Additionally, the pressure coefficient of the bottom wall increased immediately downstream of the cylinder and farther downstream of the reattachment point remained stable in the flow recovery process.Keywords
This publication has 26 references indexed in Scilit:
- The transitional backward-facing step flow in a water channel with variable expansion geometryExperimental Thermal and Fluid Science, 2012
- DNS of backward‐facing step flow with fully turbulent inflowInternational Journal for Numerical Methods in Fluids, 2009
- Control of a channel-flow behind a backward-facing step by suction/blowingInternational Journal of Heat and Fluid Flow, 2007
- Predictions of a Turbulent Separated Flow Using Commercial CFD CodesJournal of Fluids Engineering, 2001
- Tetrahedral and hexahedral mesh adaptation for CFD problemsApplied Numerical Mathematics, 1998
- Reynolds number effect on the skin friction in separated flows behind a backward-facing stepExperiments in Fluids, 1995
- Effects of the separating shear layer on the reattachment flow structure part 2: Reattachment length and wall shear stressExperiments in Fluids, 1988
- Features of a reattaching turbulent shear layer in divergent channelflowAIAA Journal, 1985
- Experimental and theoretical investigation of backward-facing step flowJournal of Fluid Mechanics, 1983
- Investigation of a Reattaching Turbulent Shear Layer: Flow Over a Backward-Facing StepJournal of Fluids Engineering, 1980