导管周围内外流场的计算
THE CALCULATION OF INTERNAL AND EXTEKNAL FLOW FIELD NEAR RING WING
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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。Abstract: 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 w...
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