热科学学报（英文版）2003，Vol.12Issue(2)：151-156,170,7.
Cavitation Rates in Water with Dissolved Gas and Other Impurities
Cavitation Rates in Water with Dissolved Gas and Other Impurities
摘要
Abstract
Our objective is a better understanding of the role of physical properties of real fluids in the thermodynamics of cavitation in impure water. An extension to the classical homogenous nucleation theory suitable for mixtures is presented in attempt to address the discrepancy between the theoretical predictions and practical observations of cavitation rates in water at normal temperatures.The extension takes into account the non—equilibrium (dissipative) effects involved in nuclei formation through a substance dependent correction coefficient to be determined experimentally.The theory of thermodynamic fluctuations is applied to derive the work of formation of a bubble nucleus.The value of the correction coefficient is estimated using preliminary experimental data from a convergent-divergent nozzle. An application of the results to the numerical prediction of the cavitation zones in a radial-flow water pump is shown.关键词
cavitation/homogeneous nucleation/water/dissolved gas/impuritiesKey words
cavitation/homogeneous nucleation/water/dissolved gas/impurities分类
能源科技引用本文复制引用
Patrik Zima,Frantisek Marsík,Milan Sedlár..Cavitation Rates in Water with Dissolved Gas and Other Impurities[J].热科学学报（英文版）,2003,12(2):151-156,170,7.基金项目
This work has been supported by grants No.101/00/1282 and 101/02/0364 of the Grang Agency of the Czech Republic and by grant no.S2076003 of the Grant Agency of the Academy of Sciences of the Czech Republic. （）
