A Finite Volume-Based High Order Cartesian Cut-Cell Method for Computational Aeroacoustics
A Finite Volume-Based High Order Cartesian Cut-Cell Method for Computational Aeroacoustics
复制标题
计算气动声学的基于有限体积的高阶笛卡尔切割单元方法
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
W. Shyy
中科院分区：
文献类型：
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作者：
M. Popescu;C. Tai;W. Shyy
针对复杂的非线性气动声学计算，提出了一种基于有限体积的高阶有限体积格式，该格式具有优化的色散和耗散特性，并结合笛卡尔截断单元技术。场方程采用优化的预分解紧致有限体积(OPC-FV)格式求解。切割单元方法通过根据局部几何特征对计算单元进行细分来处理边界形状，并便于使用具有理想精度的数值程序。由此产生的技术通过几个测试问题进行了评估，这些问题表明了令人满意的性能。
A finite volume-based high-order scheme with optimized dispersion and dissipation characteristics in cooperation with the Cartesian cut-cell technique is presented for aero- acoustics computations involving geometric complexities and nonlinearities. The field equation is solved based on an optimized prefactored compact finite volume (OPC-fv) scheme. The cut-cell approach handles the boundary shape by sub-dividing the computational cells in accordance with the local geometric characteristics and facilitates the use of numerical procedures with a desirable level of accuracy. The resulting technique is assessed by several test problems that demonstrate satisfactory performance.