基于单元相交的混合网格精确守恒插值方法

发布时间：2018-05-30 21:08

  本文选题：流体力学 + 守恒插值　； 参考：《爆炸与冲击》2016年03期

【摘要】：基于网格切割思想,发展了二维/三维混合网格条件下的单元相交算法,可精确计算任意两个多边形/多面体的交集。在此基础上,实现了基于单元相交(CIB/DC)的精确守恒插值算法。二维和三维验证算例表明,该方法能够保证插值过程中计算域内物理量的严格守恒,且具有比常规二阶插值更高的精度。
[Abstract]:Based on the idea of mesh cutting, the element intersection algorithm under the condition of 2D / 3D hybrid mesh is developed, which can accurately calculate the intersection of any two polygons / polyhedrons. On this basis, an accurate conservation interpolation algorithm based on intersecting CIB-DC is implemented. Two and three dimensional verification examples show that the proposed method can guarantee the strict conservation of the physical quantities in the computational domain in the interpolation process and has a higher accuracy than that of the conventional second-order interpolation.
【作者单位】： 大连理工大学航空航天学院;
【基金】：国家自然科学基金项目(11272074) 辽宁省自然科学基金项目(201202033)
【分类号】：O35
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本文编号：1956821