Unified Gas Kinetic Scheme and Direct Simulation Monte Carlo Computations of High-Speed Lid-Driven Microcavity Flows Academic Article uri icon

abstract

  • AbstractAccurate 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.

published proceedings

  • COMMUNICATIONS IN COMPUTATIONAL PHYSICS

author list (cited authors)

  • Venugopal, V., & Girimaji, S. S.

citation count

  • 13

complete list of authors

  • Venugopal, Vishnu||Girimaji, Sharath S

publication date

  • May 2015