| 摘要: |
| 根据有关固体火箭发动机装药后端到喷管间的空间特征,对三维突扩后突缩内部流场计算进行了探索和研究。计算中成功地应用了SIMPLE算法解决复杂的三维流场计算问题,并在初场构成、源项离散及松弛系数的选取等方面都进行了调试改进。通过建立计算模型、划分网格、对方程及边界条件离散化和非线性处理,以及线性方程组求解等,计算得到了符合物理规律的数值解,指出了空间涡及二次涡的存在。 |
| 关键词: 固体火箭发动机 尾喷管 三维流 流场 计算 |
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| CALCULATION OF 3-D INTERNAL FLOW FIELD WITH SUDDEN SHRINK-AFTER-SUDDEN EXPANSION |
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Wu Liyang, Zhang Wei
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Harbin Shipbuilding Engineering Institute
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| Abstract: |
| The calculation procedure for the three-dimentional internal flow-field with sudden-shrink-after-sudden-expansion is studied in this paper. The application of SIMPLE algorithm to solve complex three-dimensional flow-field problems is successful. The numerical solutions in accordance with physical law are acquired by establishing calculation model, dividing grid system, discreting equations and boundary conditions, dealing with nonlinearity and solving linear equations. |
| Key words: Solid rocket engine Jet nozzle Three-dimensional flow Flow field Calculation |
