Influence of Dissolved Gas Content on Venturi Cavitation at Thermally Sensitive Conditions


Influence of dissolved gas content (measured by dissolved oxygen, DO) on Venturi cavitation (10mm-scale test section) in water at different temperature, i.e., different degree of thermal sensitivity, is investigated in a blowdown-type cavitation tunnel. Investigations on the cavitation length and the unsteady cavitation behavior are presented. It is shown that the cavitation length decreases with increasing temperature (or the degree of the thermodynamic effect). In addition, the DO content has little influence on the mean cavitation length at thermally sensitive conditions.

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