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首页> 外文会议>Joint ASME/JSME Fluids Engineering Division Conference >RELIABILITY OF COMPRESSIBLE FLOW/STRUCTURE COUPLING METHOD ON CARTESIAN GRID WITH SIGNED DISTANCE FIELD
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RELIABILITY OF COMPRESSIBLE FLOW/STRUCTURE COUPLING METHOD ON CARTESIAN GRID WITH SIGNED DISTANCE FIELD

机译：符号距离场笛卡尔网格上可压缩流量/结构耦合方法的可靠性

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摘要

A compressible flow solver coupled with moving/deformed geometries on Cartesian grid with Signed Distance Field (SDF) is developed and its capability is investigated through computations of several basic flow fields for future applications with certain reliability. The flow solver is designed so that SDF includes sufficient geometrical information to compute flow fields. Since information of moving/deformed geometries is recognized as a change of the SDF between time steps, the flow solver can be coupled with moving/deformed geometries naturally. The implementation of this solver is simple and easy. No modification is needed in the main part of the flow solver. Furthermore, the interpolation and the corresponding stencils searching process are not required. Several basic flow fields around fixed/moving cylinders and a fixed sphere are computed in order to validate the proposed solver, in which the computed results are compared with available numerical and experimental results. The results demonstrated the method's capability for moderate Reynolds number flows around both of fixed and moving geometries. Based on the results, some criteria and problems for obtaining reliable solution are suggested.
机译：开发了一种可压缩流动求解器，其在笛卡尔栅格上的移动/变形几何形状具有符号距离场（SDF），并且通过计算具有某些可靠性的未来应用的几个基本流场的计算来研究其能力。设计流动算器，使得SDF包括足够的几何信息来计算流场。由于移动/变形几何形状的信息被识别为时间步骤之间的SDF的变化，因此流动求解器可以自然地与移动/变形的几何形状耦合。这个求解器的实施简单且容易。流动求解器的主要部分不需要修改。此外，不需要插值和相应的模板搜索过程。计算固定/移动缸周围的几个基本流场和固定球体，以便验证所提出的求解器，其中计算结果与可用的数值和实验结果进行比较。结果证明了该方法对固定和移动几何形状的中等雷诺数流动的能力。基于结果，提出了一些用于获得可靠解决方案的标准和问题。

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