基于局部弯曲四面体网格的可压流自适应高阶间断伽辽金方法OACSCDCSTPCD
An h?Adaptivity DG Method on Locally Curved Tetrahedral Mesh for Solving Compressible Flows
对于可压缩流的数值模拟,通常需要在不同的计算区域采用不同尺度的网格单元.在诸如激波、附面层等物理量变化剧烈的区域通常需要小尺度的网格单元来提高数值模拟的精度,在物理量相对光滑的区域采用较大尺度的网格单元即可.虽然对于复杂流动自适应网格已被广泛应用,但对于高阶间断伽辽金方法仍然存在两个困难.首先,高阶间断伽辽金方法需要的局部弯曲网格显著提升了网格单元细分和粗化的难度,因为弯曲的信息需要始终被保持.其次,对于并行计算,网格自适应会破坏分区负载平衡,从…查看全部>>
For the numerical simulation of compressible flows,normally different mesh sizes are expected in different regions. For example,smaller mesh sizes are required to improve the local numerical resolution in the regions where the physical variables vary violently (for example,near the shock waves or in the boundary layers) and larger elements are expected for the regions where the solution is smooth. h-adaptive mesh has been widely used for complex flows. Howev…查看全部>>
安慰;黄增辉;吕宏强
南京航空航天大学航空学院,南京 210016,中国中国空气动力研究与发展中心,气动噪声控制重点实验室,绵阳 621000,中国中国空气动力研究与发展中心,空气动力学国家重点实验室,绵阳 621000,中国
航空航天
网格自适应间断伽辽金方法弯曲网格四面体网格可压缩流
h-adaptivitydiscontinuous Galerkin(DG)methodcurved meshtetrahedral meshcompressible flows
《南京航空航天大学学报（英文版）》 2020 (5)
702-712,11
This work was supported by the fund?ing of the Key Laboratory of Aerodynamic Noise Control(No.ANCL20190103),the State Key Laboratory of Aero?dynamics(No.SKLA20180102),the Aeronautical Science Foundation of China(Nos.2018ZA52002,2019ZA052011),the National Natural Science Foundation of China(Nos.61672281,61732006).
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