Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4993081 | International Communications in Heat and Mass Transfer | 2016 | 7 Pages |
Abstract
We investigate heat transfer in a rarefied gas in a lid-driven cavity flow initiated by instantaneously heating and cooling opposite walls for different flow regimes. Volume diffusion model is used as an extension to the standard Navier-Stokes-Fourier set for simulating the flows. Numerical simulations are presented and compared with standard Navier-Stokes-Fourier. For higher Knudsen numbers the volume diffusion model captures non-local equilibrium effects in corners of the cavity that are missed by the Navier-Stokes-Fourier model. It is generally observed that one can use volume diffusion corrections to capture disequilibrium effects in high rarefaction regimes.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
S Kokou Dadzie, Chariton Christou,