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发表于 2007-4-19 22:50:14
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水泵的最小流量管线的用途---在线等
It depends on your specific case. However in principle, change of flow rate will cause change of flow speed, and change of flow speed will cause change of pressure distribution. Therefore the location and magnitude of low pressure region may change.
Another issue is when flow rate goes down, torque may go up too. Think about when pump started, you need bigger torque to drive the blade.下面引用由yvfl在 2007/04/19 00:07am 发表的内容:
那个低压区 在正常流量的时候不一样存在吗 为什么那个时候就不气蚀 流量小了就气蚀?!!??? |
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