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| Important effect of state of water quality on cavitation pressure performance of pump device |
| CHANG Jin-shi |
| College of Water Conservancy and Civil Engineering, China Agricultural University, Beijing 100083, China |
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Abstract Through the experimental study on the cavitation pressure characteristics at different water qualities important conclusions are drawn.When water is at temperature of 20 ℃ the value of cavitation pressure of the clear water depends on the quantity of the ionization of cosmic rays at the ground;while the cavitation pressure characteristic of the sediment-laden water depends only on the density of sediment-laden in the water.The article gives the theory and method to calculate and confirm the suction head Hs and the cavitation margin NPSH by considering the effect of water quality on the cavitation pressure.
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Received: 08 August 2013
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