On the turbulence amplification in shock-wave/turbulent boundary layer interaction

J Fang, AA Zheltovodov, Y Yao, C Moulinec… - Journal of Fluid …, 2020 - cambridge.org
The mechanism of turbulence amplification in shock-wave/boundary layer interactions is
reviewed, and a new turbulence amplification mechanism is proposed based on the …

Flow leakage and Kelvin–Helmholtz instability of turbulent flow over porous media

M Jadidi, HK Param, A Revell, Y Mahmoudi - Physics of Fluids, 2022 - pubs.aip.org
In the present paper, turbulent flow in a composite porous–fluid system, including a
permeable surface-mounted bluff body immersed in a turbulent channel flow, is investigated …

[HTML][HTML] A variational data assimilation approach for sparse velocity reference data in coarse RANS simulations through a corrective forcing term

O Brenner, J Plogmann, P Piroozmand… - Computer Methods in …, 2024 - Elsevier
Abstract The Reynolds-averaged Navier–Stokes (RANS) equations provide a
computationally efficient method for solving fluid flow problems in engineering applications …

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 …

Reynolds-Number-Dependence of Length Scales Governing Turbulent-Flow Separation in Wall-Modeled Large Eddy Simulation

R Agrawal, ST Bose, P Moin - AIAA Journal, 2024 - arc.aiaa.org
This paper proposes a Reynolds number R e scaling for the number of grid points N cv
required in wall-modeled Large Eddy Simulation (WMLES) of turbulent boundary layers …

Status, perspectives, and added value of high fidelity simulations for safety and design

EMJ Komen, A Mathur, F Roelofs, E Merzari… - Nuclear Engineering and …, 2023 - Elsevier
With the increase in computational power, High Fidelity (HiFi) simulations become
increasingly important to nuclear thermal hydraulics for fundamental understanding of …

Improving the aerodynamic performance of wig aircraft with a micro-vortex generator (mvg) in low-speed condition

Z Methal, ASA Talib, MSA Bakar, MRA Rahman… - Aerospace, 2023 - mdpi.com
This present study investigated the potential of passive flow control to reduce induced drag
by using a micro-vortex generator (MVG) at a backward-facing step (BFS) location. A wing-in …

Large-eddy simulation of flow turbulence in clarification systems

H Li, S Balachandar, J Sansalone - Acta Mechanica, 2021 - Springer
Prediction of turbulent flow is required for design and assessment of clarifier systems that
have been implemented throughout history to treat water in the urban water cycle through …

New strategies for mitigating the gray area in delayed-detached eddy simulation models

A Pont-Vílchez, A Duben, A Gorobets, A Revell, A Oliva… - AIAA journal, 2021 - arc.aiaa.org
This paper presents a new approach for mitigating the unphysical delay in the Reynolds-
averaged Navier–Stokes (RANS) to large-eddy simulation (LES) transition, often referred to …

Turbulent flow over confined backward-facing step: PIV vs. DNS

B Zajec, M Matkovič, N Kosanič, J Oder, B Mikuž… - Applied Sciences, 2021 - mdpi.com
Featured Application The paper answers the question about an expected agreement
between the very accurate numerical simulations and very accurate experiments in 3D time …