复杂形式球型收敛调节片喷管内流场计算及分析
Numerical investigation on internal flow of a spherical convergent flap nozzle with complex geometry
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摘要: 为了分析复杂形式球型收敛调节片喷管(SCFN)三维内流场特性, 对六角形和领结形的SCFN进行几何建模, 并利用N-S方程和S-A模型, 对两种喷管在不同落压比(NPR)下进行了内流场数值模拟.研究表明, 计算结果与实验结果吻合较好;在此基础上, 对两种喷管的流场特性及性能进行了比较分析.Abstract: To analyze three-dimensional internal flow characteristic of spherical convergent flap nozzles with hexagonal and bowtie geometries, the geometric models were established and N-S equation and S-A model were employed in the numerical simulation.The simulation was developed at different NPR(nozzle pressure ratio).The calculated results are compared favorably well with experimental data.Furthermore, the internal flow characteristic and performance of two nozzles are compared and analyzed.
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[1] 梁春华,靳宝林,李雨桐.球形收敛调节片推力矢量喷管的发展[J].航空发动机,2002,(3):55-58.LIANG Chunhua,JIN Baolin,LI Yutong.Development of spherical convergent flap nozzle[J].Journal of Aeroengine.2002,(3):55-58. [2] Wing D J.Static thrust and vectoring performance of spherical convergent flap nozzle with a nonrectangular divergent duct[R].National Aeronautics and Space Administration TP -1998 -206912,1998. [3] 赵一鹗,余少志.复杂几何形状喷管内外三维流场的数值模拟[J].推进技术,2000,21(3):30-33.ZHAO Yie,YU Shaozhi.Numerical simulation on internal and external flow fields of nozzle with complex geometry[J].Journal of Propulsion Technology,2000,21(3):30-33. [4] Barth T J,Jespersen D.The design and applica-tion of upwind schemes on unstructured meshes[R].AIAA 89-0366,1989. [5] Spalart P R,Allmaras S R.A one-equation turbulence model for aerodynamic flows[R].AIAA 93-0880,1993. [6] 罗静,王强,额日其太.轴对称矢量喷管内流场特性的不同(湍)流模型计算[J].推进技术,2003,24(4):326-329.LUO Jing,WANG Qiang,Eriqitai.Computation for the effect of turbulence models on internal performance for axisymmetric vectoring exhaust nozzles[J].Journal of Propulsion Technology,2003,24(4):326-329.
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