复杂外形静动态混合网格生成技术研究新进展

Recent Progress of Static and Dynamic Hybrid Grid Generation Techniques over Complex Geometries

网格生成技术是CFD复杂工程应用的重要环节,网格质量的好坏直接影响计算结果的精准度,因此其已成为CFD的重要研究领域.在张涵信院士的指导下,作者自20世纪90年代初开始开展非结构网格、混合网格技术和相应的计算方法研究,并逐步发展至动态混合网格技术及非定常计算方法.在张涵信院士80华诞之际,对近年来作者及团队在网格生成技术及应用方面所取得的进展进行了简要的综述,分别介绍了静动态混合网格生成、定常/非定常计算方法、网格技术的应用等方面的进展情况.最后,就网格生成技术目前还存在的问题,展望了未来的发展方向.作者谨以此文表达对张涵信院士25年来的培养、关怀和帮助的崇高敬意.

Grid generation is the first step of numerical simulations in computational fluid dynamics （CFD） applications. The quality of mesh will influence directly the accuracy of numerical results, so it has been a very important research field in CFD. Under the guidance of Prof. Hanxin Zhang, the authors had engaged in unstructured and hybrid grid generation techniques, and corresponding numerical schemes since 1990s, and then in moving grid generation techniques and unsteady numerical schemes. In this paper, recent progress in grid generation techniques, including the static and dynamic hybrid grid generation techniques over complex geometries, steady/unsteady numerical schemes and flow solvers, and their appli- cations in aerospace industry was reviewed. Finally, the challenges and the potential directions of grid generation techniques in the future were discussed. This paper was to appreciate Prof. Hanxin Zhang for his cultivation in his 80th birthday.