摘要
提出了一个适合于水下兵器导管与壳体之间内外流场的计算方法。应用半交错网格，可方便地实施导管叶片面上和壳体上的物面边界条件，使得整个内外流场可以统一求解，基于连续性方程的提法，提出了一个类似于人工压缩性法的压力计算公式。用本方法计算了层流和湍流内外流问题，湍流计算采用κ－ε三两方程湍流模式，数值试验和结果比较表明本方法收敛性态良好，适用性强，结果置信度高。
A numerical method is presented here to solve the internal and eXternal flow near/ between ring wing and hulls of submerged weapons.The internal and external flow of full domain can be solved together by adopting semi-staggered grid system in which the boundary conditions of foils of the ring wing and hull are convenient to implement.The calculation of pressure is based on a continuity equation formulation which is similar to the artificial compressible method.The internal and external flow are calculated with this inethod in laminar flow or turbulent flow,the latter adopts κ-ε model to clos the governing equatlons.The results and numerical simulations compare favorably with the experement,indi-cating that the present method is convergent,useful and effective.
出处
《力学学报》
EI
CSCD
北大核心
1994年第6期641-648,共8页
Chinese Journal of Theoretical and Applied Mechanics
关键词
半交错网格
内外流动
导管
流场
湍流
continuity equation formulation,semi-staggered grid,axisymmetrical internal and external flow
