共被期刊论文引用了4次
您的检索式：您选中1篇文献正在查看引证文献汇总
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 翼柱型与环向开槽型燃烧室声学特性对比显示文摘为了解决大长径比固体火箭发动机研制中出现的声不稳定问题,本文对典型翼柱装药和环向开槽装药发动机燃烧室进行了声模态和声学响应分析。通过时-频联合分析的方法,得出了2种结构燃烧室随燃面退移的声频变化规律和关键位置的声学响应特性变化规律。研究表明:翼柱型和环向开槽型发动机的前2阶声频随工作时间先减小再增大;燃烧室内的特征结构对声频有明显影响;在发动机头部,环向开槽型发动机的1阶声振幅是翼柱型发动机的34.5%。在声基频下,环向开槽型发动机声学稳定性较翼柱型发动机更高。 | 王大鹏 赵静 陈林君 杨奔 马潇健 | 2021 | 哈尔滨工程大学学报2021，42，8： | 3 |
| 2 | 某双脉冲发动机压力振荡产生机理及抑制方法分析显示文摘以某双脉冲发动机二脉冲工作时出现的压力振荡现象为研究对象,建立燃烧室内的声腔和流动模型,采用有限元和大涡模拟算法及声涡耦合机理对压力振荡出现的原因进行了研究,并对采用扰流环抑制压力振荡的原理进行了分析。研究结果表明:该发动机二脉冲工作时出现的压力振荡由声涡耦合引起,在发动机中增加扰流环结构可提高发动机工作初期的漩涡脱落频率,使该频率远离发动机燃烧室声腔的轴向一阶声频,从而抑制压力振荡的发生。 | 赵瑜 李莎莎 刘喆 薛牧遥 | 2018 | 上海航天2018，35，4： | 3 |
| 3 | Transient flow characteristics and performance of a solid rocket motor with a pintle valve显示文摘The pintle valve is currently the most promising technology among all thrust control methods for solid rocket motors.Pintle structure and working condition play a critical role in the successful operation of a pintle motor.Here,2D transient simulations of a pintle motor using dynamic meshing are performed.Reynolds-averaged Navier–Stokes equations are solved with the implementation of an RNG k–e turbulence model.In cold flow test,emphasis is placed on the effect of pintle structure,and in hot flow test,emphasis is placed on the effect of propellant pressure exponent.Validation is performed first by comparing the present results with available cold-test experimental data.This shows that the transient simulations can provide good predictions for pintle motors with a relative error of less than 2%in terms of the chamber pressure.It can be found that,when the gas supply system is different,the working principles and conditions of pintle motors are different.The feedback process in propellant combustion has a significant impact on its operation and the effect on the pintle motor performance of different pintle structures is achieved by different variations in the equivalent throat area.Finally,the pressure exponent is an important parameter in hot flow test and changes of thrust in hot flow test are not monotonic,because changes in the flow field and motor performance are asynchronous. | Anchen SONG Ningfei WANG Junwei LI Baoyin MA Xinjian CHEN | 2020 | Chinese Journal of Aeronautics2020，33，12： | 1 |
| 4 | Effect of the head cavity on pressure oscillation suppression characteristics in large solid rocket motors显示文摘In order to discover the effect of head cavity on resonance damping characteristics in solid rocket motors,large-eddy simulations with wall-adapting-local-eddy-viscosity subgrid scale turbulent model are implemented to study the oscillation flow field induced by vortex shedding based on the VKI(von Kármán Institute)experimental motor.Firstly,mesh sensitivity analysis and grid-independent analysis are carried out for the computer code validation.Then,the numerical method is further validated by comparing the calculated results and experimental data.Thirdly,the effects of head-end cavity on the pressure oscillation am-plitudes are studied in this paper.The results indicate that cavity volume,location and configuration have a cooperative effect on the oscillation amplitude.It is proved that Rayleigh criterion can be used as a guiding principle for the design of resonance damping cavity.The change of the head-end cavity breaks the balance between the mass flux and acoustic energy.Therefore,the pressure oscillation characteristics change accordingly.It is concluded that a large mass flux added at the pressure antinode could attribute to significant amplitude.Meanwhile,the damping effect of the cavity is stronger when the distance between cavity and pressure antinode becomes shorter.Finally,this method is applied to the modification of an engineering solid rocket motor.The static test of solid rocket motor reflects that the oscillations can be effectively suppressed by a head-end cavity. | ZHANG Qiao WANG NingFei LI JunWei SU WanXing ZHANG Yan | 2015 | Science China(Technological Sciences)2015，58，7： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员