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 - <p style="text-align: justify;">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.</p>