Simulation and analysis on the motion characteristics of shock train under dynamic throttle

GAO Wenzhi; SONG Zhixiong; TIAN Ye; ZHAO Pengfei

doi:10.11729/syltlx20220022

Volume 36 Issue 4

Sep. 2022

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Journal of Experiments in Fluid Mechanics > 2022 > 36(4): 10-19. > DOI: 10.11729/syltlx20220022

GAO W Z，SONG Z X，TIAN Y，et al. Simulation and analysis on the motion characteristics of shock train under dynamic throttle[J]. Journal of Experiments in Fluid Mechanics, 2022，36（4）：10-19.. DOI: 10.11729/syltlx20220022

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Simulation and analysis on the motion characteristics of shock train under dynamic throttle

1.
School of Mechanical Engineering, Hefei University of Technology, Hefei　230009, China
2.
Science and Technology on Scramjet Laboratory of Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang　621000, China

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Received Date: February 28, 2022
Revised Date: March 28, 2022
Accepted Date: April 06, 2022
Available Online: September 22, 2022

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Abstract

Abstract

To investigate the shock train characteristics under the influence of dynamic backpressure, the dynamic throttle flows of a two-dimensional inlet/isolator configuration were simulated under Mach 6 free steam condition, where the throttle ratio increased from 0.20 to 0.32 and were kept constant. The effects of increasing time （varied from 1–10 ms） of the throttle ratio were analyzed. The results show that the amplitudes of the shock train downstream motion and the upstream motion are within 3 mm and about 18 mm, respectively, as the throttle ratio increases from 0.20 to 0.32 within 5 ms. The shock train motion lag behind the throttle process and the lag time decreases with the prolongation of the throttle variation time. When the increasing time of the throttle ratio was 6 ms and above, the shock train could move downstream to the middle of the cavity and the motion amplitude reached 31 mm, accompanied by flow oscillations. The upstream motion amplitude of the shock train was still about 18 mm and the shock train motion was approximately synchronized with the throttle process. The analysis showes that the lag of the shock train motion is related to the time intervals of back pressure increment and propagation, which is longer than the variation time of the throttle ratio under the condition of short increasing time. Under the long increasing time conditions, the flow oscillations are related to the increase of the mass flowrate in the subsonic section of the cavity, which dominates the shrinkage of the recirculating region in the cavity. This further causes the expansion of the supersonic flows near the cavity and generates choked flows near the throttle region. Therefore, flow oscillations are generated through the interactions between the separated shock wave flows of the choked flows and the cavity recirculating region. The lag of the shock train motion and its influence on flow performance should be considered in engineering design.
- scramjet engine,
- shock train,
- dynamic backpressure,
- hypersonic inlet,
- flow separation

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References

[1]	ZARCHAN P. Scramjet Propulsion[M]. Reston: American Institute of Aeronautics and Astronautics, Inc, 2000: 369-446.
[2]	MATSUO K,MIYAZATO Y,KIM H D. Shock train and pseudo-shock phenomena in internal gas flows[J]. Progress in Aerospace Sciences,1999,35(1):33-100. doi: 10.1016/S0376-0421(98)00011-6
[3]	FIÉVET R,KOO H,RAMAN V,et al. Numerical investigation of shock-train response to inflow boundary-layer variations[J]. AIAA Journal,2017,55(9):2888-2901. doi: 10.2514/1.j055333
[4]	HUNT R L,GAMBA M. On the origin and propagation of perturbations that cause shock train inherent unsteadiness[J]. Journal of Fluid Mechanics,2019,861:815-859. doi: 10.1017/jfm.2018.927
[5]	IM S,BACCARELLA D,MCGANN B,et al. Unstart phenomena induced by mass addition and heat release in a model scramjet[J]. Journal of Fluid Mechanics,2016,797:604-629. doi: 10.1017/jfm.2016.282
[6]	LIN K C,JACKSON K,BEHDADNIA R,et al. Acoustic characterization of an ethylene-fueled scramjet combustor with a cavity flameholder[J]. Journal of Propulsion and Power,2010,26(6):1161-1170. doi: 10.2514/1.43338
[7]	黄河峡,谭慧俊,庄逸,等. 高超声速进气道/隔离段内流特性研究进展[J]. 推进技术,2018,39(10):2252-2273. DOI: 10.13675/j.cnki.tjjs.2018.10.010 HUANG H X,TAN H J,ZHUANG Y,et al. Progress in internal flow characteristics of hypersonic inlet/isolator[J]. Journal of Propulsion Technology,2018,39(10):2252-2273. doi: 10.13675/j.cnki.tjjs.2018.10.010
[8]	HUNT R L,GAMBA M. Shock train unsteadiness characteristics,oblique-to-normal transition,and three-dimensional leading shock structure[J]. AIAA Journal,2017,56(4):1569-1587. doi: 10.2514/1.J056344
[9]	孔小平,陈植,张扣立,等. 隔离段激波串精细结构与压力特性实验研究[J]. 实验流体力学,2018,32(4):31-38. DOI: 10.11729/syltlx20170178 KONG X P,CHEN Z,ZHANG K L,et al. Experimental study on the fine structures and pressure characteristic of the shock train in the isolator[J]. Journal of Experiments in Fluid Mechanics,2018,32(4):31-38. doi: 10.11729/syltlx20170178
[10]	LI Z F,GAO W Z,JIANG H L,et al. Unsteady behaviors of a hypersonic inlet caused by throttling in shock tunnel[J]. AIAA Journal,2013,51(10):2485-2492. doi: 10.2514/1.J052384
[11]	李一鸣,李祝飞,杨基明,等. 隔离段横向喷流作用下激波串运动特性研究[J]. 实验流体力学,2018,32(5):1-6. DOI: 10.11729/syltlx20180023 LI Y M,LI Z F,YANG J M,et al. Characteristics of the shock train motions caused by transverse injections into the isolator[J]. Journal of Experiments in Fluid Mechanics,2018,32(5):1-6. doi: 10.11729/syltlx20180023
[12]	TAN H J,SUN S,HUANG H X. Behavior of shock trains in a hypersonic inlet/isolator model with complex background waves[J]. Experiments in Fluids,2012,53(6):1647-1661. doi: 10.1007/s00348-012-1386-1
[13]	LI N,CHANG J T,XU K J,et al. Oscillation of the shock train in an isolator with incident shocks[J]. Physics of Fluids,2018,30(11):116102. doi: 10.1063/1.5053451
[14]	LI N,CHANG J T,XU K J,et al. Instability of shock train behaviour with incident shocks[J]. Journal of Fluid Mechanics,2021,907:A40. doi: 10.1017/jfm.2020.702
[15]	徐珂靖,常军涛,李楠,等. 背景波系下的隔离段激波串运动特性及其流动机理研究进展[J]. 实验流体力学,2019,33(3):31-42. DOI: 10.11729/syltlx20180196 XU K J,CHANG J T,LI N,et al. Recent research progress on motion characteristics and flow mechanism of shock train in an isolator with background waves[J]. Journal of Experiments in Fluid Mechanics,2019,33(3):31-42. doi: 10.11729/syltlx20180196
[16]	XIONG B,FAN X Q,WANG Y,et al. Experimental study on self-excited and forced oscillations of an oblique shock train[J]. Journal of Spacecraft and Rockets,2018,55(3):640-647. doi: 10.2514/1.A33973
[17]	XIONG B,FAN X Q,WANG Z G,et al. Analysis and modelling of unsteady shock train motions[J]. Journal of Fluid Mechanics,2018,846:240-262. doi: 10.1017/jfm.2018.209
[18]	李季,罗佳茂,杨顺华. 边界层抽吸和脉动反压作用下隔离段内流动特性研究[J]. 推进技术,2019,40(8):1759-1766. DOI: 10.13675/j.cnki.tjjs.180498 LI J,LUO J M,YANG S H. A study of flow characteristics in isolator with effects of boundary layer suction and oscillating back pressure[J]. Journal of Propulsion Technology,2019,40(8):1759-1766. doi: 10.13675/j.cnki.tjjs.180498
[19]	WANG C P,CHENG C,CHENG K M,et al. Unsteady behavior of oblique shock train and boundary layer interactions[J]. Aerospace Science and Technology,2018,79:212-222. doi: 10.1016/j.ast.2018.05.054
[20]	CHENG C,WANG C P,CHENG K M. Response of an oblique shock train to downstream periodic pressure perturbations[J]. Proceedings of the Institution of Mechanical Engineers, Part G:Journal of Aerospace Engineering,2019,233(1):57-70. doi: 10.1177/0954410017727028
[21]	SU W Y,JI Y X,CHEN Y. Effects of dynamic backpressure on pseudoshock oscillations in scramjet inlet-isolator[J]. Journal of Propulsion and Power,2016,32(2):516-528. doi: 10.2514/1.B35898
[22]	高文智, 赵鹏飞, 宁重阳, 等. 周期节流扰动下激波串振荡流动的数值模拟 [J/OL]. 航空动力学报, [2022-02-25].https://kns.cnki.net/kcms/detail/detail.aspx?dbcode=CAPJ&dbname=CAPJLAST&filename=HKDI20220119008&uniplatform=NZKPT&v=QYhreWw4sfPVim7zEs3we1sM-BW17MsMxVn4xtBcnssXFmzPnPnzekfU643sZhmCdoi: 10.13224/ j.cnki.jasp.20210524.
[23]	NIE B P, LI Z F, HUANG R, et al. Effect of boundary layer suction on shock train oscillations in an inlet/isolator model[C]//Proceedings of the 32nd International Symposium on Shock Waves （ISSW32 2019）, Singapore: Research Publishing Services. 2019. doi: 10.3850/978-981-11-2730-4_0155-cd
[24]	GAO W Z,CHEN J,LIU C H,et al. Effects of vortex generators on unsteady unstarted flows of an axisymmetric inlet with nose bluntness[J]. Aerospace Science and Technology,2020,104:106021. doi: 10.1016/j.ast.2020.106021

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