Nonlinear vacuum gas flow through a short tube due to pressure and temperature gradients

作者：Pantazis Sarantis; Naris Steryios; Tantos Christos; Valougeorgis Dimitris^*; Andre Julien; Millet Francois; Perin Jean Paul

来源：Fusion Engineering and Design, 2013, 88(9-10): 2384-2387.

DOI：10.1016/j.fusengdes.2013.03.011

• Vacuum gas dynamics
• Knudsen
• Kinetic theory
• Pumping systems of DT fusion reactors

The flow of a rarefied gas through a tube due to both pressure and temperature gradients has been studied numerically. The main objective is to investigate the performance of a mechanical vacuum pump operating at low temperatures in order to increase the pumped mass flow rate. This type of pump is under development at CEA-Grenoble. The flow is modelled by the Shakhov kinetic model equation, which is solved by the discrete velocity method. Results are presented for certain geometry and flow parameters. Since according to the pump design the temperature driven flow is in the opposite direction than the main pressure driven flow, it has been found that for the operating pressure range studied here the net mass flow rate through the pump may be significantly reduced.

• 出版日期2013-10
• 单位中国地震局