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This paper is to investigate microscale flow and transfer between the rotor  and the flank for rotary engine. The rotor and flank is simplified to two  disks in order to study flow field and temperature field conveniently. The  paper takes analysis of steady laminar flow and heat transfer between two  disks separated by a gas-filled gap due to machining tolerance. A 3-D  multi-physical coupling model is used, involving velocity slip, temperature  jump, rarefaction and dissipation. A solution based on commercial code  COMSOL is derived and the results are used to illustrate the effects to  velocity field, temperature distribution, disks' torque and Nusselt number  based on the governing parameters. The paper also investigates the effects  of different modified Knudsen number on flow field and temperature field.

Microscale flow and heat transfer between the rotor and the flank for rotary engine