9th International Symposium on Cavitation | |
Modelling of single bubble-dynamics and thermal effects | |
Papoulias, D.^1 ; Gavaises, M.^2 | |
CD-adapco, 200 Shepherds Bush Road, London | |
W6 7NL, United Kingdom^1 | |
Department of Mechanical Engineering and Aeronautics, City University London, Northampton Square, London | |
EC1V 0HB, United Kingdom^2 | |
关键词: Cavitation bubble; Compressibility correction; Equation of state; Rayleigh-Plesset model; Reynolds-averaged navier-stokes simulations; Single-bubble sonoluminescence; Solution effects; Thermal behaviours; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/656/1/012098/pdf DOI : 10.1088/1742-6596/656/1/012098 |
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来源: IOP | |
【 摘 要 】
This paper evaluates the solution effects of different Rayleigh-Plesset models (R-P) for simulating the growth/collapse dynamics and thermal behaviour of homogeneous gas bubbles. The flow inputs used for the discrete cavitation bubble calculations are obtained from Reynolds-averaged Navier-Stokes simulations (RANS), performed in high-pressure nozzle holes. Parametric 1-D results are presented for the classical thermal R-P equation [1] as well as for refined models which incorporated compressibility corrections and thermal effects [2, 3]. The thermal bubble model is coupled with the energy equation, which provides the temperature of the bubble as a function of conduction/convection and radiation heat-transfer mechanisms. For approximating gas pressure variations a high-order virial equation of state (EOS) was used, based on Helmholtz free energy principle [4]. The coded thermal R-P model was validated against experimental measurements [5] and model predictions [6] reported in single-bubble sonoluminescence (SBSL).
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Files | Size | Format | View |
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Modelling of single bubble-dynamics and thermal effects | 764KB | download |