A priori subcell limiting approach is developed for high-order flux reconstruction/correction procedure via reconstruction (FR/CPR) on two-dimensional unstructured quadrilateral meshes. Firstly, a modified indicator based on modal energy coefficients is proposed to detect troubled cells. Then, troubled cells are decomposed into nonuniform subcells and each subcell has one solution point. A second-order finite difference shock-capturing scheme based on nonuniform nonlinear weighted (NNW) interpolation is constructed to calculate troubled cells while smooth cells are calculated by the CPR method. Numerical investigations show that the subcell limiting strategy on unstructured quadrilateral meshes is robust in shock-capturing.

翻译：为通过二维非结构化四边环形的重建(FR/CPR)的高序通量重建/校正程序制定了先变子细胞限制办法;首先,根据模型能量系数提出修改指标,以探测麻烦的细胞;然后,扰动细胞分解成非单形子细胞,每个子细胞有一个解决方案点;根据非统一非线性非线性加权(NNW)内插设计了二级差分冲击采集计划,以计算麻烦的细胞,而平滑的细胞则用CPR方法计算。