Abstract:The numerical simulation is applied to study the 3D flow field and hydraulic performance of the pump system with horizontal forward extension shaft.The flow patterns and hydraulic loss of the inlet and outlet conduits are obtained respectively.Meanwhile the method of transparent conduit model test is applied to verify the simulation results.The results indicate that the flow patterns of numerical simulation for inlet and outlet conduits of the pump system with horizontal forward extension shaft are consistent with those of the model tests.There is local vortex within a limited extent behind the pump shaft in the inlet conduit.The velocity uniformity degree at the outlet section of the inlet conduit is 96.9%.The flow at the inlet of the outlet conduit has a little vortex and enters into the outlet conduit spirally.The velocity around the outer part of the outlet is greater,while the velocity near the center of the outlet conduit is less.The hydraulic loss from the numerical simulation for the inlet and outlet conduits is 0.142 m and 0.163 m respectively,while the model test result is 0.137 m and 0.168 m respectively.The pump system with horizontal forward extension shaft can be applied for a pumping station with low head.
陆林广,梁金栋, 陈阿萍, 刘荣华. 卧式前轴伸泵装置流道三维流动及水力损失[J]. 排灌机械工程学报, 2009, 27(1): 47-50.
Lu Linguang,Liang Jindong,Chen Aping,Liu Ronghua. 3D turbulet flow and hydraulic loss for pump system with horizontal forward-extension shaft. Journal of Drainage and Irrigation Machinery Engin, 2009, 27(1): 47-50.
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