Non-Oberbeck–Boussinesq effects in two-dimensional Rayleigh–Bénard convection of different fluids

X Pan, JI Choi - Physics of Fluids, 2023 - pubs.aip.org
Non-Oberbeck–Boussinesq (NOB) effects in three representative fluids are quantitatively
investigated in two-dimensional Rayleigh–Bénard convection. Numerical simulations are …

Effect of compressibility on the local flow topology in homogeneous shear turbulence

X Wang, S Chen, J Wang, H Li, M Wan, S Chen - Physics of Fluids, 2020 - pubs.aip.org
The local flow topology based on the invariants of the velocity gradient tensor in stationary
compressible homogeneous shear turbulence (HST) is studied by numerical simulations. In …

Instability in strongly stratified plane Couette flow with application to supercritical fluids

B Bugeat, PC Boldini, AM Hasan… - Journal of Fluid …, 2024 - cambridge.org
This paper addresses the stability of plane Couette flow in the presence of strong density
and viscosity stratifications. It demonstrates the existence of a generalised inflection point …

Shear-induced viscosity stratified flow past a pair of heated side-by-side square cylinders in a confined domain

A Sanyal, A Dhiman - Physics of Fluids, 2020 - pubs.aip.org
In this article, investigations have been carried out to decipher the effect of thermal buoyancy
in a viscosity stratified flow field for a shear-thinning fluid flowing past a pair of heated side …

Numerical study of gelation and flow restart in a waxy crude oil riser

L Tikariha, A Sanyal, L Kumar - Journal of Petroleum Science and …, 2022 - Elsevier
Precipitation of paraffin wax during crude oil transportation in low ambient temperature
presents many technological challenges in petroleum industries. During a complete …

On Bragg resonances and wave triad interactions in two-layered shear flows

R Raj, A Guha - Journal of Fluid Mechanics, 2019 - cambridge.org
The standard resonance conditions for Bragg scattering as well as weakly nonlinear wave
triads have been traditionally derived in the absence of any background velocity. In this …

Nonlinear travelling periodic waves for the Euler equations in three-layer flows

X Guan, A Doak, P Milewski… - Journal of Fluid …, 2024 - cambridge.org
In this paper, we investigate periodic travelling waves in a three-layer system with the rigid-
lid assumption. Solutions are recovered numerically using a boundary integral method. We …

Presence of Holmboe waves in particle-laden intrusive gravity current

S Rostami Dehjalali, E Khavasi, P Nazmi - Scientific Reports, 2023 - nature.com
The present study evaluates the prevalence of Holmboe waves in an intrusive gravity current
(IGC) containing particles, employing large Eddy simulation (LES). Holmboe waves, a type …

Nonlinear interfacial waves in two/three-layer Euler flows

X Guan - 2024 - discovery.ucl.ac.uk
In this thesis, we focus on two-dimensional interfacial waves in layered incompressible Euler
flows. An unified numerical scheme based on Cauchy's integral formula is used to calculate …

On the opposing roles of the Boussinesq and non‐Boussinesq baroclinic torques in surface gravity wave propagation

E Heifetz, R Maor, A Guha - Quarterly Journal of the Royal …, 2020 - Wiley Online Library
Here we suggest an alternative understanding of the surface gravity wave propagation
mechanism based on the baroclinic torque, which operates to translate the interfacial …