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含能材料  2014 

环状喷口对底排尾部流场影响的数值模拟

DOI: 10.3969/j.issn.1006-9941.2014.03.009

Keywords: 流体力学,底部排气,尾部流场,数值模拟,环状回流区,环状喷口

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Abstract:

为了增强底排尾部流场中增压减阻的效果,提出一种环状喷口模型。采用有限体积法编程求解二维轴对称Navier-Stokes方程,对底排尾部流场进行数值模拟。数值模拟和底排实验进行对比验证,结果较吻合。在此基础上,数值研究环状喷口对底排尾部流场的影响。结果表明,随排气参数增大,环状喷口模型的底压始终高于圆孔喷口模型的底压。和圆孔喷口相比,环状喷口能削弱环状回流区,使底排气体更容易流入剪切层,避免引射现象的发生。环状喷口越靠近底部边缘,底排的增压减阻效果越好。

References

[1]  郭锡福.底部排气弹外弹道学[M].北京: 国防工业出版社, 1995.GUO Xi-fu.Exterior ballistics of base bleed projectiles[M].Beijing: National Defence Industry Press, 1995.
[2]  Bowman J E, Clayden W A.Cylindrical afterbodies in supersonic flow with gas ejection[J].AIAA Journal, 1967,5(6): 1524-1525.
[3]  丁则胜, 邱光纯, 刘亚飞, 等.固体燃料底部排气空气动力研究[J].空气动力学报, 1991,9(3): 300-307.DING Ze-sheng, QIU Guang-chuen, LIU Ya-fei, et al.An aerodynamic investigation of base bleed by solid fuel[J].Acta Aerodynamica Sinica, 1991,9(3): 300-307.
[4]  陈少松, 丁则胜, 罗荣, 等.底排冷空气排气参数对模型底部流场的影响[J].弹道学报, 1994(2): 59-63.CHEN Shao-song, DING Ze-sheng, LUO Rong, et al.The effect of bleed parameters on model base flow field of base bleed cold air[J].Journal of Ballistics, 1994(2): 59-63.
[5]  Mathur T, Dutton J C.Base bleed experiments with a cylindrical afterbody in supersonic flow[J].Journal of Spacecraft and Rockets, 1996,33(1): 30-37.
[6]  Bourdon C J and Dutton J C.Visualization of a central bleed jet in an axisymmetric compressible base flow[J].Physics of Fluids, 2003,15(2): 499-510.
[7]  Sahu J, Nietubicz C J, Steger J L.Navier-Stokes computations of projectile base flow with and without base injection[J].AIAA Journal, 1985,23(9): 1348-1355.
[8]  Choi J Y, Shin E, Kim C K.Numerical study of base-bleed projectile with external combustion[C]∥AIAA Joint Propulsion Conference and Exhibit.Tucson, Arizona: AIAA, 2005.
[9]  陆中兵, 丁珏 , 周彦煌, 等.超声速飞行底部排气弹三维湍流流场数值模拟[J].南京理工大学学报, 2007,3l(1): 27-30.LU Zhong-bing, DING Jue, ZHOU Yan-huang, et al.Numerical investigation of 3-D turbulent flow fields for supersonic flying base bleed projectile[J].Journal of Nanjing University of Science and Technology, 2007,3l(1): 27-30.
[10]  陈新虹, 黄华, 周志超, 等.排气能量对底部排气弹气动特性影响的数值模拟[J].兵工学报, 2010,31(4): 447-452.CHEN Xin-hong, HUANG Hua, ZHOU Zhi-chao, et al.Numerical simulation of base bleed energy affecting aerodynamic performance of base bleed projectiles[J].Acta Armamentarii, 2010,31(4): 447-452.
[11]  Shin J R, Cho D R, Won S H, et al.Hybrid RANS/LES study of base-bleed flows in supersonic mainstream[C]∥AIAA International Space Planes and Hypersonic Systems and Technologies Conference.Dayton, Ohio: AIAA, 2008.
[12]  Shin J R, Choi J Y.DES study of base and base-bleed flows with dynamic formulation of DES constant[C]∥AIAA Aerospace Sciences Meeting.Orlando, Florida: AIAA, 2011.
[13]  Menter F R.Two-equation eddy-viscosity turbulence models for engineering application[J].AIAA Journal, 1994,32(8): 1598-1605.
[14]  梁德旺, 王可.AUSM+格式的改进[J].空气动力学学报, 2004,22(4): 404-409.LIANG De-wang , WANG Ke.Improvement of AUSM+ scheme[J].Acta Aerodynamica Sinica, 2004,22(4): 404-409.
[15]  Yoon S, Jameson A.Lower-upper symmetric- gauss-seidel method for the Euler and Navier-Stokes equations[J].AIAA Journal, 1988,26: 1025-1026.
[16]  武频, 赵润祥, 郭锡福.弧长网格生成法及其应用[J].南京理工大学学报.2002,26(5): 482-485.WU Pin, ZHAO Ruen-xiang, GUO Xi-fu.Arc length method of grid generation and its application[J].Journal of Nanjing University of Science and Technology, 2002,26(5): 482-485.

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