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首页> 外文会议>5th Joint ASME(American Society of Mechanical Engineers)/JSME(Japanese Society of Mechanical Engineers) Fluids Engineering Division Summer Conference 2007(FEDSM2007) >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：带符号距离场的笛卡尔网格上可压缩流/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：开发了一种具有符号距离场（SDF）的笛卡尔网格上具有移动/变形几何形状的可压缩流求解器，并通过计算若干基本流场来研究其功能，以确保未来的应用具有一定的可靠性。流量求解器的设计使得SDF包含足够的几何信息来计算流场。由于移动/变形的几何形状的信息被识别为SDF在时间步长之间的变化，因此流量求解器可以自然地与移动/变形的几何形状耦合。此求解器的实现非常简单。流量求解器的主要部分无需修改。此外，不需要插值和相应的模板搜索过程。为了验证所提出的求解器，计算了固定/移动圆柱体和固定球体周围的几个基本流场，其中将计算结果与可用的数值和实验结果进行了比较。结果表明，该方法具有围绕固定和移动几何体进行适中雷诺数流动的能力。根据结果​​，提出了一些获得可靠解决方案的准则和问题。

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