Shim, Jae Wan Gatignol, Renee 2024-01-20T19:33:10Z 2024-01-20T19:33:10Z 2021-09-02 2010-04 1539-3755 https://pubs.kist.re.kr/handle/201004/131593 We show that the heat exchange between fluid particles and boundary walls can be achieved by controlling the velocity change rate following the particles' collision with a wall in discrete kinetic theory, such as the lattice-gas cellular automata and the lattice Boltzmann method. We derive a relation between the velocity change rate and temperature so that we can control the velocity change rate according to a given temperature boundary condition. This relation enables us to deal with the thermal boundary whose temperature varies along a wall in contrast to the previous works of the lattice-gas cellular automata. In addition, we present simulation results to compare our method to the existing and give an example in a microchannel with a high temperature gradient boundary condition by the lattice-gas cellular automata. English AMER PHYSICAL SOC BOLTZMANN METHOD KINETIC-THEORY MODEL FLOW HYDRODYNAMICS FLUID Robust thermal boundary conditions applicable to a wall along which temperature varies in lattice-gas cellular automata Article 10.1103/PhysRevE.81.046703 1 PHYSICAL REVIEW E, v.81, no.4 PHYSICAL REVIEW E 81 4 scie scopus 000277265900080 2-s2.0-77951535825 Physics, Fluids & Plasmas Physics, Mathematical Physics Article BOLTZMANN METHOD KINETIC-THEORY MODEL FLOW HYDRODYNAMICS FLUID