| NUMERICAL SIMULATIONS OF CAVITATING FLOWS |
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| 作者单位： | Ph.D.Candidate:Wu Lei School of Civil Engineering and Mechanics，Shanghai Jiaotong University，Shanghai 200240，China Supervisor:Lu Chuan-jing (Shanghai Jiaotong University) Xue Lei ping (Shanghai Jiaotong University) Members of Dissertation Defense Committee:Dong Shi-tang (China Ship Scientific Research Center)，Chairman Dai Shi-qiang (Shanghai University) Zhang Hui-sheng (Fudan University) Miao Guo-ping (Shanghai Jiaotong Universi ty) He You-sheng (Shanghai Jiaotong University)Liu Hua (Shanghai Jiaotong University) Lu Chuang-jing (Shanghai Jiaotong Universi ty) |
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| 摘 要： | BRIEFINTRODUCTIONOFTHEPAPER : Thisthesismainlyresearchesonthehydrodynamiccharacteristicsandmechanismfor 3Dcavitatingflowsaroundaxisymmetricbodies ,aswellasthe2Dcavitatingflowsaroundhydrofoils .Anewcavi tatingflowmodel,whichinvolvesviscousandmul ti phaseeffects,isestablishedintwo phaseflowcategory .Accordingtothelocalizedvariationofdensitywithinpredominantlyincompressiblewatermediumandthecharacteristicsofsoundspeedinwater vapormixture ,arelationbetweendensityandpressureisassumed ,in…
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NUMERICAL SIMULATIONS OF CAVITATING FLOWS |
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| Wu Lei. NUMERICAL SIMULATIONS OF CAVITATING FLOWS[J]. Journal of Hydrodynamics, 2003, 15(4) |
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| Authors: | Wu Lei |
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| Abstract: | A new model, which involves viscous and multi-phase effects, was given to study cavitating flows. A local compressible model was established by introducing a density-pressure function to account for the two-phase flow of water/vapor and the transition from one phase to the other. An algorithm for calculating variable-density N-S equations of cavitating flow problem was put forward. The present method yields reasonable results for both steady and unsteady cavitating flows in 2D and 3D cases. The numerical results of unsteady character of cavitating flows around hydrofoils coincide well with experimental data. It indicates the feasibility to apply this method to a variety of cavitating flows of practical problems. |
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| Keywords: | two-phase cavitating flow model variable-density N-S equations solver 2D and 3D unsteady cavitating flow periodic cavity break-off and shedding hydrofoil axisymmetric body |
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