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ISSN Online: 2379-1748

ISBN Flash Drive: 978-1-56700-518-9

5th Thermal and Fluids Engineering Conference (TFEC)
April, 5-8, 2020, New Orleans, LA, USA

A MULTIPHASE, RIEMANN-SOLVER APPROACH TO GAS-CAVITATION

Get access (open in a new tab) pages 503-516
DOI: 10.1615/TFEC2020.mph.031923

要約

In hydraulic systems, a certain amount of air is always present as entrained air in the form of gaseous bubbles and as dissolved air. Large amounts of entrained air negatively affect the behavior of hydraulic systems by decreasing the bulk modulus of the fluid and increasing the risk of cavitation damage, e.g., cavitation erosion and the micro-diesel effect. The diffusion-driven growth of entrained gaseous bubbles surrounded by a liquid phase is referred to as gas-cavitation, in which dissolved air from the solution diffuses into the bubble. In the proposed paper, the diffusion-driven growth of a single gas bubble immersed in a liquid is examined. To that end, a comprehensive literature review, a mathematical description of the problem as well as the numerical implementation is presented.