Analytical model for thermal boundary conductance and equilibrium thermal accommodation coefficient at solid/gas interfaces
Abstract
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 (εsf ≳ kBT).
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 25, 2016
- Source ID
- 10.1063/1.4942432
Entities
People
- Ashutosh Giri
- Patrick E Hopkins
Organizations
- Office of Naval Research
- University of Virginia