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Why cavitation degrades the performance of a pump? |
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March 31, 2014, 04:31 |
Why cavitation degrades the performance of a pump?
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#1 |
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yehanyu
Join Date: Mar 2012
Location: Beijing, China
Posts: 48
Rep Power: 14 |
It is common sense that cavitation degrades the performance of a pump (causing the head of the pump to drop). But I seldom see any book clearly explains why this happen. Some books says that performance degrades is due to blockage of the blade passage by the bubbles.
As I know, the head of the pump can be determined by the euler equation I wonder anybody have some idea explaining the cavitation induced head drop based on this equation. |
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April 1, 2014, 16:38 |
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#2 |
Senior Member
Troy Snyder
Join Date: Jul 2009
Location: Akron, OH
Posts: 219
Rep Power: 18 |
You may want to take a look at the following book and the references therein:
http://authors.library.caltech.edu/25019/3/pumbook.pdf For example, in Chapter 7 one possible explanation for the degradation of hydraulic performance is that voids located not on the suction side of the blades but rather under the shroud of a centrifugal pump may impact the angle with which flow leaves the impeller and significantly alter performance. |
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April 4, 2014, 01:37 |
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#3 | |
Member
yehanyu
Join Date: Mar 2012
Location: Beijing, China
Posts: 48
Rep Power: 14 |
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