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Volume 17, Issue 5
Unified Gas Kinetic Scheme and Direct Simulation Monte Carlo Computations of High-Speed Lid-Driven Microcavity Flows

Vishnu Venugopal & Sharath S. Girimaji

DOI: 10.4208/cicp.2014.m391

Commun. Comput. Phys., 17 (2015), pp. 1127-1150.

Published online: 2018-04

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  • Abstract

Accurate simulations of high-speed rarefied flows present many physical and computational challenges. Toward this end, the present work extends the Unified Gas Kinetic Scheme (UGKS) to a wider range of Mach and Knudsen numbers by implementing WENO (Weighted Essentially Non-Oscillatory) interpolation. Then the UGKS is employed to simulate the canonical problem of lid-driven cavity flow at high speeds. Direct Simulation Monte Carlo (DSMC) computations are also performed when appropriate for comparison. The effect of aspect ratio, Knudsen number and Mach number on cavity flow physics is examined leading to important insight.

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@Article{CiCP-17-1127, author = {Vishnu Venugopal and Sharath S. Girimaji}, title = {Unified Gas Kinetic Scheme and Direct Simulation Monte Carlo Computations of High-Speed Lid-Driven Microcavity Flows}, journal = {Communications in Computational Physics}, year = {2018}, volume = {17}, number = {5}, pages = {1127--1150}, abstract = {

Accurate simulations of high-speed rarefied flows present many physical and computational challenges. Toward this end, the present work extends the Unified Gas Kinetic Scheme (UGKS) to a wider range of Mach and Knudsen numbers by implementing WENO (Weighted Essentially Non-Oscillatory) interpolation. Then the UGKS is employed to simulate the canonical problem of lid-driven cavity flow at high speeds. Direct Simulation Monte Carlo (DSMC) computations are also performed when appropriate for comparison. The effect of aspect ratio, Knudsen number and Mach number on cavity flow physics is examined leading to important insight.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.2014.m391}, url = {http://global-sci.org/intro/article_detail/cicp/11005.html} }
TY - JOUR T1 - Unified Gas Kinetic Scheme and Direct Simulation Monte Carlo Computations of High-Speed Lid-Driven Microcavity Flows AU - Vishnu Venugopal & Sharath S. Girimaji JO - Communications in Computational Physics VL - 5 SP - 1127 EP - 1150 PY - 2018 DA - 2018/04 SN - 17 DO - http://doi.org/10.4208/cicp.2014.m391 UR - https://global-sci.org/intro/article_detail/cicp/11005.html KW - AB -

Accurate simulations of high-speed rarefied flows present many physical and computational challenges. Toward this end, the present work extends the Unified Gas Kinetic Scheme (UGKS) to a wider range of Mach and Knudsen numbers by implementing WENO (Weighted Essentially Non-Oscillatory) interpolation. Then the UGKS is employed to simulate the canonical problem of lid-driven cavity flow at high speeds. Direct Simulation Monte Carlo (DSMC) computations are also performed when appropriate for comparison. The effect of aspect ratio, Knudsen number and Mach number on cavity flow physics is examined leading to important insight.

Vishnu Venugopal and Sharath S. Girimaji. (2018). Unified Gas Kinetic Scheme and Direct Simulation Monte Carlo Computations of High-Speed Lid-Driven Microcavity Flows. Communications in Computational Physics. 17 (5). 1127-1150. doi:10.4208/cicp.2014.m391
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