TY - JOUR
T1 - Transient heat transfer in a rarefied binary gas mixture confined between parallel plates due to a sudden small change of wall temperatures
AU - Polikarpov, A.Ph
AU - Ho, Minh Tuan
AU - Graur, I.
PY - 2016/10/31
Y1 - 2016/10/31
N2 - Transient behavior of the heat transfer through binary gas mixture, confined between two infinite parallel plates, caused by the sudden change of the plates’ temperatures, is studied for two monoatomic gas mixtures: Ne–Ar and He–Ar. The walls’ temperature changes are considered small compared to the equilibrium temperature of the system, so the McCormack kinetic model is used for the numerical simulations. The time evolution of the main macroscopic parameter is investigated for various species concentrations and for different gas rarefactions ranging from near the free molecular to slip flow regime. It is found that the mixture heat flux takes several characteristic times, which is defined by the distance between the plates over the most probable molecular speed, to achieve its new equilibrium state. This time of the steady state flow establishment depends strongly on the gas rarefaction, mixture nature and composition.
AB - Transient behavior of the heat transfer through binary gas mixture, confined between two infinite parallel plates, caused by the sudden change of the plates’ temperatures, is studied for two monoatomic gas mixtures: Ne–Ar and He–Ar. The walls’ temperature changes are considered small compared to the equilibrium temperature of the system, so the McCormack kinetic model is used for the numerical simulations. The time evolution of the main macroscopic parameter is investigated for various species concentrations and for different gas rarefactions ranging from near the free molecular to slip flow regime. It is found that the mixture heat flux takes several characteristic times, which is defined by the distance between the plates over the most probable molecular speed, to achieve its new equilibrium state. This time of the steady state flow establishment depends strongly on the gas rarefaction, mixture nature and composition.
UR - https://pureportal-staging.strath.ac.uk/en/publications/4ea272bf-2808-4551-8470-082fbd284eb8
U2 - 10.1016/j.ijheatmasstransfer.2016.05.124
DO - 10.1016/j.ijheatmasstransfer.2016.05.124
M3 - Article
VL - 101
SP - 1292
EP - 1303
JO - International journal of heat and mass transfer
JF - International journal of heat and mass transfer
SN - 0017-9310
ER -