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Further validation of the hybrid particle-mesh method for vortex shedding flow simulations

机译:混合粒子-网格方法在涡流模拟中的进一步验证

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ABSTRACT This is the continuation of a numerical study on vortex shedding from a blunt trailing-edge of a hydrofoil. In our previous work (Lee et al., 2015), numerical schemes for efficient computations were successfully implemented; i.e. multiple domains, the approximation of domain boundary conditions using cubic spline functions, and particle- based domain decomposition for better load balancing. In this study, numerical results through a hybrid particle-mesh method which adopts the Vortex-In-Cell (VIC) method and the Brinkman penalization model are further rigorously validated through comparison to experimental data at the Reynolds number of 2 × 10 6 . The effects of changes in numerical parameters are also explored herein. We find that the present numerical method enables us to reasonably simulate vortex shedding phenomenon, as well as turbulent wakes of a hydrofoil.
机译:摘要这是对水翼钝尾边缘涡旋脱落进行数值研究的延续。在我们之前的工作中(Lee等人,2015),成功实施了高效计算的数值方案;即多个域,使用三次样条函数近似域边界条件,以及基于粒子的域分解以实现更好的负载平衡。在这项研究中,通过与采用雷诺数2×10 6的实验数据进行比较,进一步采用了采用Vortex-In-Cell(VIC)方法和Brinkman罚分模型的混合粒子-网格方法的数值结果得到了更严格的验证。本文还探讨了数值参数变化的影响。我们发现,目前的数值方法使我们能够合理地模拟涡旋脱落现象以及水翼的湍流尾流。

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