Numerical prediction of cavitating flow around a hydrofoil using pans and improved shear stress transport k-omega model
Numerical prediction of cavitating flow around a hydrofoil using pans and improved shear stress transport k-omega model
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DOI：
10.2298/tsci1504211z
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发表时间：
2015
期刊：
影响因子：
1.7
通讯作者：
Desheng Zhang;D. Pan;Wang Haiyu;W. Shi
中科院分区：
文献类型：
--
作者：
Desheng Zhang;D. Pan;Wang Haiyu;W. Shi
本文讨论了部分平均Navier-Stokes模型和改进的剪切应力输运k-ω湍流模型在模拟绕水翼的非定常空化流动时的预报精度。数值结果表明，两种湍流模型均能有效地再现空化演化过程。数值计算结果与实验结果吻合较好。结果表明，由于射流与主流的相互作用而形成的涡对是空化脱落流不稳定的主要原因。
The prediction accuracies of partially-averaged Navier-Stokes model and improved shear stress transport k-ω turbulence model for simulating the unsteady cavitating flow around the hydrofoil were discussed in this paper. Numerical results show that the two turbulence models can effectively reproduce the cavitation evolution process. The numerical prediction for the cycle time of cavitation inception, development, detachment, and collapse agrees well with the experimental data. It is found that the vortex pair induced by the interaction between the re-entrant jet and mainstream is responsible for the instability of the cavitation shedding flow.