基于单元变形的网格间流场信息传递方法
发布时间：2019-06-01 19:09
【摘要】：针对单元网格发生变形重构中新旧网格之间的数据插值问题,提出一种基于格点格式有限体积法的流场数据传递方法。利用非结构动网格技术,将旧网格单元移动到新网格单元,同时时间推进求解流场控制方程,获得移动后旧网格单元物理量,并将其赋给新网格单元,以此来实现两套网格间的信息传递。计算结果表明,该方法在信息传递过程中没有引入插值误差,理论上流场求解方法的精度就是信息传递精度,验证结果表明其显著优于二阶插值精度。
[Abstract]:In order to solve the problem of data interpolation between new and old grids in element grid deformation reconstruction, a flow field data transfer method based on lattice format finite volume method is proposed. By using the unstructured dynamic grid technology, the old grid element is moved to the new grid element, and the flow field control equation is solved by time propulsion. The physical quantity of the old grid element after moving is obtained and assigned to the new grid element. In order to realize the information transmission between the two sets of grid. The calculation results show that the interpolation error is not introduced in the process of information transmission. In theory, the accuracy of the flow field solution method is the accuracy of information transmission. The verification results show that the method is significantly better than the second-order interpolation accuracy.
【作者单位】： 大连理工大学航空航天学院;
【基金】：国家自然科学基金资助项目(11272074) 辽宁省自然科学基金资助项目(201202033)
【分类号】：O35
本文编号：2490509
[Abstract]:In order to solve the problem of data interpolation between new and old grids in element grid deformation reconstruction, a flow field data transfer method based on lattice format finite volume method is proposed. By using the unstructured dynamic grid technology, the old grid element is moved to the new grid element, and the flow field control equation is solved by time propulsion. The physical quantity of the old grid element after moving is obtained and assigned to the new grid element. In order to realize the information transmission between the two sets of grid. The calculation results show that the interpolation error is not introduced in the process of information transmission. In theory, the accuracy of the flow field solution method is the accuracy of information transmission. The verification results show that the method is significantly better than the second-order interpolation accuracy.
【作者单位】： 大连理工大学航空航天学院;
【基金】：国家自然科学基金资助项目(11272074) 辽宁省自然科学基金资助项目(201202033)
【分类号】：O35
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1 罗小兵,李志信,过增元;不可压缩合成喷流场的数值模拟[J];工程热物理学报;2001年S1期
2 ;[J];;年期
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