Numerical Simulation of Gas-particle Flow and Heat Transfer in Slip flow Regime in a Microchannel

作者：Zhou, Jun; Liu, Zhen Yu; Wu, Hui Ying^*

来源：Journal of Engineering Thermophysics, 2017, 38(3): 581-586.

• Gas-particle flows
• Knudsen numbers
• Micro-scale heat transfers
• Numerical predictions
• Particle surface
• Slip flow regimes
• Variable property
• Velocity slips

In this paper, a numerical model considering the compressibility and variable properties of gas fluid was established to simulate the gas-particle flow and heat transfer in the microchannel. The velocity slip and temperature jump boundary conditions were implemented at the gas-particle interface in the numerical modeling. The influences of microchannel confined space, Knudsen number, gas velocity and particle surface temperature on the heat transfer between gas and particle were studied based on the numerical predictions. The results show that the heat transfer is enhanced due to the confined space of microchannel. Moreover, the average Nusselt number increases with increasing gas flow rate, while it decreases with the increases of Knudsen number and particle surface temperature.

• 出版日期2017
• 单位上海交通大学