部分流泵非定常流动分析  

Numerical Analysis of Unsteady Flow Field for Partial Emission Pu mp

作　　者：陈党民[1] 李新宏 黄淑娟[1] 

机构地区：[1]西安交通大学能源与动力工程学院,西安710049 [2]西安陕鼓动力股份有限公司,西安710611

出　　处：《西安交通大学学报》2005年第9期954-957,共4页Journal of Xi'an Jiaotong University

摘　　要：在设计工况下采用滑移网格技术对部分流泵进行了整机非定常流动数值计算,分析了叶轮、蜗壳内典型的非定常流动规律.计算表明:部分流泵内流的非定常特性明显,蜗壳喉部尤为剧烈;瞬时扬程的变化是由于叶轮与蜗壳喉部强烈的非定常流动特性所决定的,只有采用非定常计算方法才能反映其内流的实质.该计算为进一步研究部分流泵的内流现象、提高效率、减少水力损失提供了一定的理论依据.An unsteady numerical analysis of the entire flow field was conducted at the design point for a partial emission pump with the arbitrary sliding mesh technology, and the unsteady flow characteristics in impeller and volute were investigated. The results show that the unsteady characteristic is obvious, especially at laryngeal of the volute. Moreover, the instantaneous head rise changes because of strong interaction between impeller and volute. Only the unsteady numerical analysis could predict the performance of the inner flow accurately.

关 键 词：部分流泵 非定常流动 数值计算 

分 类 号：TH31[机械工程—机械制造及自动化]