论文摘要
本文发展了一种新的基于网格单元交界面变量阶跃的高精度Laplacian人工粘性激波捕捉方法。根据量纲一致的原则,用界面处的守恒变量阶跃和单元内的压力探测器来构造人工粘性系数,该方法形式简单,可直接应用于非结构混合网格。数值试验表明,对于亚声速圆柱绕流问题,该方法适用于高阶曲网格,能有效保证解的精度。通过典型的一维和二维算例,考核了该激波捕捉方法的性能,对比了计算的收敛性,研究了该方法对光滑流场区域的影响。考核计算发现,该方法能够在有效抑制振荡的同时保证收敛性,对光滑区流场的污染较小。三维F4算例表明,该方法能应用于复杂外形,是一种切实可行的高精度间断处理方法。
论文目录
文章来源
类型: 国内会议
作者: 赵辉,张耀冰,陈江涛,龚小权,杨悦悦
关键词: 人工粘性,激波捕捉,高精度,方法,高阶曲网格
来源: 中国力学大会（CCTAM 2019） 2019-08-25
年度: 2019
分类: 基础科学
专业: 力学
单位: 中国空气动力研究与发展中心
分类号: O35
页码: 934-945
总页数: 12
文件大小: 1076k
下载量: 13
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