%A WANG Chun-lin, SI Yan-lei, ZHENG Hai-xia, PENG Na, ZHAO Bai-tong, ZHANG Hao %T Numerical simulation of rotational interior flow in self-priming pump %0 Journal Article %D 2008 %J Journal of Drainage and Irrigation Machinery Engin %R 10.3969/j.issn.1674-8530.2008.02.008 %P 31-35 %V 26 %N 2 %U {http://zzs.ujs.edu.cn/pgjx/CN/abstract/article_1432.shtml} %8 2008-03-25 %X The three-dimensional incompressible turbulent flow of coupled impeller and volute was simulated by using reynolds time-averaged N-S equations,the standard k-ŠĆ turbulent model, three-dimensional non-structural tetrahedral mesh and multiple reference frame of rotating fluid mechanical model.The velocity and pressure distributions in the volute and impeller were obtained.The relative velocity and pressure distributions in the impeller interior were analyzed in detail.It was proved that the interior flow field of impeller is nonsymmetrical due to the interaction of impeller and volute in different relative position.The velocity in the volute nearby the impeller outlet was higher.It was found that the interior flow in the volute was turbulent due to its complicated structure,and can result in some loss.In addition.It was revealed that those vortexes exist nearby the clapboard and in the separation chamber.The reason was analyzed and discussed.