A cavitation aggressiveness index within the Reynolds averaged Navier Stokes methodology for cavitating flows

• Published in: Journal of hydrodynamics. Series B Vol. 27; no. 4; pp. 579 - 586
• Main Authors: KOUKOUVINIS, P., BERGELES, G., GAVAISES, M.
• Format: Journal Article
• Language: English
• Published: Singapore Elsevier Ltd 01-10-2015; Springer Singapore; Department of Engineering and Mathematical Science, City University London, Northampton Square, London, EC1V0HB, UK
• Subjects: cavitation aggressiveness index (CAI); cavitation erosion; Engineering; Engineering Fluid Dynamics; Hydrology/Water Resources; multiphase cavitating flows; Numerical and Computational Physics; Simulation; 指数平均; 攻击性; 斯托克斯方程; 流动区域; 物质损失; 空化流动; 雷诺; 预测能力; cavitation aggressiveness index (CAI); cavitation erosion; multiphase cavitating flows
• ISSN: 1001-6058; 1878-0342
• DOI: 10.1016/S1001-6058(15)60519-4

The paper proposes a methodology within the Reynolds averaged Navier Stokes (RANS) solvers for cavitating flows capable of predicting the flow regions of bubble collapse and the potential aggressiveness to material damage. An aggressiveness index is introduced, called cavitation aggressiveness index (CAI) based on the total derivative of pressure which identifies surface areas exposed to bubble collapses, the index is tested in two known cases documented in the open literature and seems to identify regions of potential cavitation damage.