標題: Analysis of the flow in the grooves of a molecular pump
作者: Tsui, YY
Kung, CP
Cheng, HP
機械工程學系
Department of Mechanical Engineering
公開日期: 1-七月-2001
摘要: A computational procedure used to solve conservation equations governing the slip flow in a molecular pump of the Holweck type is developed, The finite volume method is used for discretization and the gr id is arranged in the curvilinear, nonstaggered form The slip boundary condition is imposed on the solid walls. The clearance gap between the rotor and the casing is ignored It is evident fi um the calculation that the pressure difference between the two side walls of the channel, iel med pressure side and suction sick, varies in accordance with the pressure difference between the inlet and the outlet of the pump, Thus, the side-wall pressure difference can play. the role of an indicator of pumping effectiveness, Tests on a variety. of configurations show that to achieve the best performance both the spiral angle and the channel height need to be optimized, Besides, it is better to have fewer flow channels and to place these channels on the rotor instead of on the casing.
URI: http://hdl.handle.net/11536/29545
ISSN: 1040-7782
期刊: NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
Volume: 40
Issue: 1
起始頁: 73
結束頁: 88
顯示於類別:期刊論文


文件中的檔案:

  1. 000170057800005.pdf