Cooling and heating play a major role in micro/nano-devices and rarefied gases [1]. In this paper, we report the validation of a wall heat flux boundary condition, implemented in the direct simulation Monte Carlo (DSMC) solver of the OpenFOAM package. We used an enhanced version of OpenFOAM 2.4.0 called OpenFOAM 2.4-MNF. The DSMC solver in this release has enhanced features such as transient adaptive subcells, chemical reaction modules, and defined pressure inlet/outlet boundary conditions. The modified iterative technique (MIT), which was recently introduced by Akhlaghi and Roohi [2] was used in this implementation. This approach implements a desired wall heat flux distribution over the walls of the geometry for rarefied gas simulations.

Keywords