Investigation of aspect ratio effects on flow characteristics and vorticity generation in shock-induced rectangular bubble

S Singh - European Journal of Mechanics-B/Fluids, 2023 - Elsevier
Abstract In shock-induced Richtmyer–Meshkov instability, the polygonal bubbles, including
the rectangular interface can offer favorable circumstances for shock refraction research …

A triangular discontinuous Galerkin method for non-Newtonian implicit constitutive models of rarefied and microscale gases

NTP Le, H Xiao, RS Myong - Journal of Computational Physics, 2014 - Elsevier
The discontinuous Galerkin (DG) method has been popular as a numerical technique for
solving the conservation laws of gas dynamics. In the present study, we develop an explicit …

An explicit modal discontinuous Galerkin method for Boltzmann transport equation under electronic nonequilibrium conditions

S Singh, M Battiato - Computers & Fluids, 2021 - Elsevier
The present paper deals with the development of a numerical scheme for the solution of two-
dimensional Boltzmann transport equation (BTE) under electronic nonequilibrium …

Explicit discontinuous spectral element method with entropy generation based artificial viscosity for shocked viscous flows

A Chaudhuri, GB Jacobs, WS Don, H Abbassi… - Journal of …, 2017 - Elsevier
A spatio-temporal adaptive artificial viscosity (AV) based shock-capturing scheme is
proposed for the solution of both inviscid and viscous compressible flows using a high-order …

A modal discontinuous Galerkin method for simulating dusty and granular gas flows in thermal non-equilibrium in the Eulerian framework

O Ejtehadi, RS Myong - Journal of Computational Physics, 2020 - Elsevier
A modal discontinuous Galerkin method was developed for computing compressible
rarefied gaseous flows interacting with rigid particles and granular medium. In contrast to …

Complex wave patterns in dilute gas–particle flows based on a novel discontinuous Galerkin scheme

O Ejtehadi, A Rahimi, A Karchani, RS Myong - International journal of …, 2018 - Elsevier
The present work investigates complex wave patterns in dilute gas–particle flows based on
a novel discontinuous Galerkin (DG) method. For this purpose, a high order DG method was …

An explicit high-order single-stage single-step positivity-preserving finite difference WENO method for the compressible Euler equations

DC Seal, Q Tang, Z Xu, AJ Christlieb - Journal of Scientific Computing, 2016 - Springer
In this work we construct a high-order, single-stage, single-step positivity-preserving method
for the compressible Euler equations. Space is discretized with the finite difference weighted …

Positivity-preserving Runge-Kutta discontinuous Galerkin method on adaptive Cartesian grid for strong moving shock

J Liu, J Qiu, M Goman, X Li, M Liu - Numerical Mathematics: Theory …, 2016 - cambridge.org
In order to suppress the failure of preserving positivity of density or pressure, a positivity-
preserving limiter technique coupled with h-adaptive Runge-Kutta discontinuous Galerkin …

Eulerian-Eulerian simulation of dusty gas flows past a prism from subsonic to supersonic regimes using a modal discontinuous Galerkin method

O Ejtehadi, RS Myong - Computers & Fluids, 2021 - Elsevier
The present work investigates the bubble formation and vortex shedding phenomena in the
viscous flow of a compressible gas seeded with dust particles. A new modal discontinuous …

Modal discontinuous Galerkin simulations for Grad's 13 moment equations: Application to Riemann problem in continuum-rarefied flow regime

S Singh, H Song, M Torrilhon - Journal of Computational and …, 2024 - Taylor & Francis
For real-world engineering applications, there is a great deal of interest in developing
effective models and simulations of continuum-rarefied gas flows. In this study, the numerical …