A Force-Based Grid Manipulator for ALE Calculations in a Lobe Pump

• 来源期刊: 热科学学报（英文版）
• 年，卷（期）: 2003,（4）
• 页码范围: 318-322,370
• 页数: 6页
• 语种: 英文

摘要

In this paper, a time-dependant calculation of flow in a lobe pump is presented. Calculations are performed using the arbitrary Lagrangean Eulerean (ALE) method. A grid manipulator is needed to move the nodes between time steps. The used grid manipulator is based on the pseudo-force idea. This means that each node is fictitiously connected with its 8 neighbours via fictitious springs. The equilibrium of the resulting pseudo spring forces defines the altered position of the nodes. The grid manipulator was coupled with a commercial flow solver and the whole was tested on the flow through a three-lobe lobe pump. Results were obtained for a rotational speed of 460 rpm and incompressible silicon oil as fluid.