Analytical model for thermal boundary conductance and equilibrium thermal accommodation coefficient at solid/gas interfaces.
We develop an analytical model for the thermal boundary conductance between a solid and a gas. By considering the thermal fluxes in the solid and the gas, we describe the transmission of energy across the solid/gas interface with diffuse mismatch theory. From the predicted thermal boundary conductances across solid/gas interfaces, the equilibrium thermal accommodation coefficient is determined and compared to predictions from molecular dynamics simulations on the model solid gas systems. We show that our model is applicable for modeling the thermal accommodation of gases on solid surfaces at non cryogenic temperatures and relatively strong solid gas interactions (e(sf) k(B)T)
The Journal of chemical physics