西华大学学报（自然科学版）2017，Vol.36Issue(2)：1-5,5.DOI:10.3969/j.issn.1673-159X.2017.02.001
基于轴承简化模型后口环间隙对泵性能的影响
The Effects of Rear Wear-ring Clearance on the Performance of Pump basic on Simplified Bearing Model
摘要
Abstract
As for the complex rear wear-ring return-flow system,a method is proposed to simplify bearing model.The method was applied and based on the simplified model,the flowing of three-dimensional turbulent in a high-speed pump (38500r/min) was computed by using the time-averaged Navier-Stokes equation and the SIMPLEC algorithm.The result shows that this method is feasible in engineering practice.On this basic,the models with different rear wear-ring clearance were simulated.The external characteristic and the fluid flow of the pump under all circumstances were analyzed.Research shows that the rear wear-ring influences the external characteristic of the pump obviously.The leakage of rear wear-ring is great influenced by the size of wear-ring,and is roughly linear relationship with the clearance size.The increase of clearance of rear wear-ring can improve the flow state in rear cavity and decrease the vortex region,and smooth the flow.关键词
轴承简化模型/后口环间隙/高速泵/全流场/数值计算Key words
simplified bearing model/rear wear-ring clearance/high-speed pump/whole flow filed/numerical calculation分类
机械制造引用本文复制引用
杨从新,刘洋,安莎,徐楠,刘军年..基于轴承简化模型后口环间隙对泵性能的影响[J].西华大学学报（自然科学版）,2017,36(2):1-5,5.基金项目
中国航天科技集团公司支撑项目(2011TY09). （2011TY09）
