Jet from Exhaust Tunnel Outlet on Rocket Launch Site

doi:10.3969/j.issn.1000-1093.2020.06.007

Abstract

Abstract: A method for analyzing the subsonic winding jet in the non-uniform wind field based on the theoretical formula of subsonic linear jet is proposed to research the change law of jet from the exhaust tunnel outlet on the launch site. The axis equation of the winding jet under the non-uniform wind field, and the approximate formulas of jet half-width, velocities on cross sections, flow mass and velocities on axis are derived, and the velocities of incompressible winding jet under the conditions of constant wind speed, different initial half-widths and different speed ratios are calculated by using approximate formulas and computational fluid dynamics(CFD) method. The parameters of the approximate formulas are adjusted based on CFD results, and the influences of different initial half-widths and speed ratios on jet are analyzed. The results show that the approximate formulas can be used to calculate jet accurately, the change in initial half-width has little influence on jet, and the change in speed ratio has more influence on jet. The proposed method is feasible for analyzing the jet from exhanst tunnel outlet on rocket launch site.Key

Key words: rocketlaunchsite, exhausttunneloutlet, windingjet, computationalfluiddynamics, initialhalf-width, speedratio

CLC Number:

QUAN Hui, XIE Jian, LI Liang, ZHANG Li. Jet from Exhaust Tunnel Outlet on Rocket Launch Site[J]. Acta Armamentarii, 2020, 41(6): 1111-1122.

References

［1］姜毅, 史少岩, 牛钰森, 等. 发射气体动力学［M］. 北京：北京理工大学出版社, 2015: 317-463.
JIANG Y, SHI S Y, NIU Y S, et al. Jet gas dynamics ［M］. Beijing: Beijing Institute of Technology Press, 2015: 317-463. (in Chinese)
［2］王飞, 杨树兴, 徐勇. W型地下井发射环境数值模拟与分析［J］. 固体火箭技术, 2007, 30(6): 466-469.
WANG F, YANG S X, XU Y. Numerical simulation and analysis on W-type silo launching environment ［J］. Journal of Solid Rocket Technology, 2007, 30(6): 466-469. (in Chinese)
［3］周笑飞. 井下发射过程燃气射流流场研究［D］. 北京: 北京理工大学, 2015: 86-94.
ZHOU X F. Study on the silo jet flow field during the launching ［D］. Beijing: Beijing Institute of Technology, 2015: 86-94. (in Chinese)
［4］谢政, 谢建, 常正阳, 等. 火箭发射燃气流二次燃烧数值模拟［J］. 宇航学报, 2017, 38(5): 542-549.
XIE Z, XIE J, CHANG Z Y, et al. Numerical research on jet secondary combustion of rocket launch ［J］. Journal of Astronautics, 2017, 38(5): 542-549. (in Chinese)
［5］谢建, 谢政, 常正阳, 等. 火箭点火压力脉冲形成机理和影响因子分析［J］. 推进技术, 2018, 39(1): 152-159.
XIE J, XIE Z, CHANG Z Y, et al. Generation mechanism and influence factors analysis of rocket ignition pressure pulse ［J］. Journal of Propulsion Technology, 2018, 39(1): 152-159 (in Chinese)
［6］谢建, 权辉, 谢政. 一种火箭发射场坪流场的环形线汇描述方法［J］. 宇航学报, 2018, 39(12):91-97.
XIE J, QUAN H, XIE Z. A method for calculating flow field of launch site by using the ring-sink model ［J］. Journal of Astronautics, 2018, 39(12):91-97. (in Chinese)
［7］ GOHIL T B, SAHA A K, MURALIDHAR K. Numerical study of instability mechanisms in a circular jet at low Reynolds numbers ［J］. Computers & Fluids, 2012, 64: 1-18.
［8］ XU B P, WEB J X, VOLKOV K N. Large-eddy simulation of vortical structures in a forced plane impinging jet［J］.European Journal of Mechanics-B/Fluids, 2013, 42: 104-120.
［9］冯博声, 薛晓春. 边界形状对4股燃气射流扩展稳定性影响的数值模拟［J］. 兵工学报, 2018, 39(9): 1692-1700.
FENG B S, XUE X C. Numerical simulation of the influence of boundary shape on the expansion stability of four combustion-gas jets ［J］. Acta Armamentarii, 2018, 39(9): 1692-1700.(in Chinese)

［10］ WEIGAND B, SPRING S. Multiple jet impingement-a review ［J］. Heat Transfer Research, 2011, 42(2): 101-142.
［11］ MOHAMMADPOUR J, ZOLFAGHRIAN M M, MUJUMDAR A S, et al. Heat transfer under composite arrangement of pulsed and steady turbulent submerged multiple jets impinging on a flat surface ［J］. International Journal of Thermal Sciences, 2014, 86: 139-147.
［12］ PAKHOMOV M A, TEREKHOV V I. Numerical study of fluid flow and heat transfer characteristics in an intermittent turbulent impinging round jet［J］.International Journal of Thermal Sciences, 2015, 87: 85-93.
［13］李彦静, 陈科, 胡天群, 等. 高密度弗劳德数热浮力特性实验［J］. 华中科技大学学报（自然科学版）, 2017, 45(12): 91-95.
LI Y J, CHEN K, HU T Q, et al. Experiments on characteristics of thermal buoyant jets with high density Froude numbers ［J］. Journal of Huazhong University of Science and Technology (Natural Science Edition), 2017, 45(12): 91-95. (in Chinese)
［14］马健. 纯射流在非恒定横流中的流动特性研究［D］. 杭州：浙江大学，2006: 118-138.
MA J. Flow behavior of pure jet in unsteady crossflow ［D］. Hangzhou: Zhejiang University, 2006: 118-138. (in Chinese)
［15］盛刚浩, 张海滨, 赵中闯, 等. 横向气流中环状流射流液膜的破碎与雾化［J］. 中国科学院大学学报, 2017, 34(2): 160-165.
SHENG G H, ZHANG H B, ZHAO Z C, et al. Breakup and atomization of annular flow jet in crossflow ［J］. Journal of University of Chinese Academy of Science, 2017, 34(2): 160-165. (in Chinese)
［16］潘衍强. 横向气流中射流轴线的弯曲［J］. 华中工学院学报, 1980, 8(3): 171- 176.
PAN Y Q. The jet path in a cross stream ［J］. Journal of Huazhong University of Science and Technology, 1980, 8(3): 171- 176. (in Chinese)
［17］平浚. 射流理论基础及应用［M］. 北京：宇航出版社, 1995: 212-218.
PING J. Basic theories and applications of jet ［M］. Beijing: China Astronautic Publishing House, 1995: 212-218. (in Chinese)
［18］马梓然，徐敏义，栾剑,等. 矩形长宽比对射流中心线湍流特性的影响［J］. 实验流体力学, 2017, 39(1): 54-61.
MA Z R, XU M Y, LUAN J, et al. Statistical properties of turbulent free jets issuing from rectangular nozzles with different aspect ratios ［J］. Journal of Experiments in Fluid Mechanics, 2017, 39(1): 54-61. (in Chinese)
［19］ DI VENUTA I, BOGHI A, PETRACCI I, et al. Flow evolution and mass transfer in a turbulent rectangular free jet of air with small laminar Schmidt number ［J］. International Communications in Heat and Mass Transfer, 2019, 107: 44-54.
［20］刘沛清. 自由紊动射流理论［M］. 北京：北京航空航天大学出版社, 2008: 8-13, 152.
LIU P Q. Theory of free turbulent jet ［M］. Beijing: Beihang University Press, 2008: 8-13, 152. (in Chinese)
［21］谢象春. 湍流射流理论与计算［M］. 北京：科学出版社, 1975: 125-177.
XIE X C. Theory and calculation of turbulent jet ［M］. Beijing: Science Press, 1975: 125-177. (in Chinese)
［22］张强, 杨永. 不同湍流模型在射流推力矢量喷管数值模拟中的比较分析研究［J］. 西北工业大学学报, 2012, 30(1): 62-67.
ZHANG Q, YANG Y. Some comparative study of turbulence models for fluidic thrust vectoring nozzle ［J］. Journal of Northwestern Polytechnical University, 2012, 30(1): 62-67. (in Chinese)
［23］邵艳. 高超声速低温喷管横向射流混合反应机理的数值模拟和实验研究［D］. 长沙: 国防科学技术大学, 2011: 24-47.
SHAO Y. Numerical simulation and experimental investigation of the mixing and reacting mechanisms associated with the transverse injection in HYLTE nozzle ［D］. Changsha: National University of Defense Technology, 2011: 24-47. (in Chinese)
［24］ ANDERSON J D. 计算流体力学基础及其应用［M］. 吴颂平, 刘赵淼, 译. 北京: 机械工业出版社, 2007: 341-352.
ANDERSON J D. Computational fluid dynamics ［M］. WU S P, LIU Z M, translated. Beijing: China Machine Press, 2007: 341-352. (in Chinese)

第41卷第6期2020 年6月
兵工学报ACTA ARMAMENTARII
Vol.41No.6Jun.2020

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