[HTML][HTML] A review of the complex flow and heat transfer characteristics in microchannels

J Zhang, Z Zou, C Fu - Micromachines, 2023 - mdpi.com
Continuously improving heat transfer efficiency is one of the important goals in the field of
energy. Compact heat exchangers characterized by microscale flow and heat transfer have …

Thermochemical non-equilibrium effects in turbulent hypersonic boundary layers

D Passiatore, L Sciacovelli, P Cinnella… - Journal of Fluid …, 2022 - cambridge.org
A hypersonic, spatially evolving turbulent boundary layer at Mach 12.48 with a cooled wall is
analysed by means of direct numerical simulations. At the selected conditions, massive …

Insights into the turbulent flow of dense gases through high-fidelity simulations

P Cinnella, X Gloerfelt - Computers & Fluids, 2023 - Elsevier
This article reviews recent advances in the understanding of turbulent flows of non-ideal
gases through the use of high-fidelity direct and large eddy simulations. In particular, the …

Direct numerical simulation of a hypersonic transitional boundary layer at suborbital enthalpies

M Di Renzo, J Urzay - Journal of Fluid Mechanics, 2021 - cambridge.org
A Mach-10 hypersonic boundary layer of air overriding a cold, isothermal, non-catalytic flat
wall, and with a stagnation enthalpy of in semi-local viscous units, lead to air dissociation in …

HTR solver: An open-source exascale-oriented task-based multi-GPU high-order code for hypersonic aerothermodynamics

M Di Renzo, L Fu, J Urzay - Computer Physics Communications, 2020 - Elsevier
In this study, the open-source Hypersonics Task-based Research (HTR) solver for
hypersonic aerothermodynamics is described. The physical formulation of the code includes …

Linear-model-based study of the coupling between velocity and temperature fields in compressible turbulent channel flows

C Cheng, L Fu - Journal of Fluid Mechanics, 2023 - cambridge.org
It is generally believed that the temperature and the velocity fields are highly coupled in
compressible wall-bounded turbulence. In the present study, we employ a linear model, ie …

Simulation of a turbulent flow subjected to favorable and adverse pressure gradients

A Uzun, MR Malik - Theoretical and computational fluid dynamics, 2021 - Springer
This paper reports the results from a direct numerical simulation of an initially turbulent
boundary layer passing over a wall-mounted “speed bump” geometry. The speed bump …

Turbulence statistics and coherent structures in compressible channel flow

J Yao, F Hussain - Physical Review Fluids, 2020 - APS
Direct numerical simulations of compressible turbulent channel flows are performed for bulk
Mach numbers 0.8 and 1.5 and bulk Reynolds numbers in the range of 3000–34 000. The …

High-subsonic boundary-layer flows of an organic vapour

X Gloerfelt, A Bienner, P Cinnella - Journal of Fluid Mechanics, 2023 - cambridge.org
Boundary layers of Novec649, a low-global-warming potential fluid of interest for low-grade
heat recovery, are investigated numerically by means of linear stability theory, direct …

Asymptotic behaviour at the wall in compressible turbulent channels

A Baranwal, DA Donzis… - Journal of Fluid …, 2022 - cambridge.org
The asymptotic behaviour of Reynolds stresses close to walls is well established in
incompressible flows owing to the constraint imposed by the solenoidal nature of the velocity …