A review of Backward-Facing Step (BFS) flow mechanisms, heat transfer and control

L Chen, K Asai, T Nonomura, G Xi, T Liu - Thermal Science and …, 2018 - Elsevier
Abstract Backward-Facing Step (BFS) flow is one representative model for separation flows,
which can be widely seen in aerodynamic flows (airfoil, spoiler, high attack angle process) …

High Reynolds number flow over a backward-facing step: structure of the mean separation bubble

PM Nadge, RN Govardhan - Experiments in fluids, 2014 - Springer
In the present paper, the structure of the mean separation bubble downstream of the
backward-facing step is studied at large Reynolds numbers. The flow over the step at these …

Comparative assessment for pressure field reconstruction based on physics-informed neural network

D Fan, Y Xu, H Wang, J Wang - Physics of Fluids, 2023 - pubs.aip.org
In this paper, a physics-informed neural network (PINN) is used to determine pressure fields
from the experimentally measured velocity data. As a novel method of data assimilation …

Analysis of flapping motion of reattaching shear layer behind a two-dimensional backward-facing step

X Ma, A Schröder - Physics of Fluids, 2017 - pubs.aip.org
An experimental investigation was carried out on the flapping motion of a turbulent
reattaching shear layer downstream of a two-dimensional backward-facing step. The …

Effect of angle of attack on vortex dynamics in laminar separation bubbles

A Lambert, S Yarusevych - Physics of Fluids, 2019 - pubs.aip.org
The dynamics of coherent structures that develop within laminar separation bubbles over a
NACA 0018 airfoil at Re c= 100 000 and Angles of Attack (AOA) of 0, 5, 8, and 10 are …

Control of a channel-flow behind a backward-facing step by suction/blowing

V Uruba, P Jonáš, O Mazur - International Journal of Heat and Fluid Flow, 2007 - Elsevier
Results of the experimental investigation on control of narrow channel flow behind a
backward-facing step by blowing/suction near the step foot are presented. The slots differ in …

Investigation of spanwise coherent structures in turbulent backward-facing step flow by time-resolved PIV

X Ma, Z Tang, N Jiang - Experimental Thermal and Fluid Science, 2022 - Elsevier
We experimentally investigate spanwise coherent structures in the turbulent shear layer
downstream of a two-dimensional backward-facing step (BFS). The incoming free-stream …

Eddy structures in a transitional backward-facing step flow

HP Rani, TWH Sheu, ESF Tsai - Journal of Fluid Mechanics, 2007 - cambridge.org
In the present study, flow simulation has been carried out in a backward-facing step channel
defined by an expansion ratio of 2.02 and a spanwise aspect ratio of 8 to provide the …

Shock wave–boundary layer interaction in supersonic flow over a forward-facing step

JN Murugan, RN Govardhan - Journal of Fluid Mechanics, 2016 - cambridge.org
We study in the present work a Mach 2.5 flow over a forward-facing step. The focus of the
work is the flow ahead of the step, in particular, the unsteady interactions between the shock …

Effect of length of two-dimensional obstacles on characteristics of separation and reattachment

J Van der Kindere, B Ganapathisubramani - Journal of Wind Engineering …, 2018 - Elsevier
The flow over a forward-facing step (FFS) and a backward-facing step (BFS) have been
extensively studied separately, but the interaction between both obstacles has received little …