Abstract
Flow characteristic of compressible flow in a micro-tube was investigated numerically. In conventional researches, the flow characteristics have been investigated under the assumption of isothermal flow. But it is not sure the limitation of condition in which we can use the isothermal flow assumption. In this report, the mass flow rate through the micro-tube was examined considering with temperature decrease caused by gas expansion, temperature increase caused by viscous dissipation, heat conduction and convection. The results were compared with the isothermal flow and the limitation of the assumption was discussed in the combination of pressure ratio and tube length.
