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长春光学精密机械与物... [5]
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清华大学 [1]
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期刊论文 [2]
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Numerical studies of static aeroelastic effects on grid fin aerodynamic performances
期刊论文
CHINESE JOURNAL OF AERONAUTICS, 2017, 卷号: 30, 期号: 4, 页码: 1300-1314
作者:
Huang CD(黄程德)
;
Liu W(刘文)
;
Yang GW(杨国伟)
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浏览/下载:18/0
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提交时间:2017/11/29
Aeroelasticity
Fluid-structure Interpolation
Grid Fin
Mesh Deformation
Radial Basis Function
基于IDDES和VODE方法的超声速燃烧假定PDF模拟
期刊论文
2016, 2016
牛健
;
刘小勇
;
朴英
;
Niu Jian
;
Liu Xiaoyong
;
Piao Ying
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浏览/下载:6/0
超声速前视共形光学系统图像复原方法研究
学位论文
博士: 中国科学院大学, 2014
朱瑞飞
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浏览/下载:40/0
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提交时间:2014/08/21
A strong coupled CFD-CSD method on computational aeroelastity (EI CONFERENCE)
会议论文
2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China
Xi R.
;
Jia H.
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浏览/下载:62/0
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提交时间:2013/03/25
In this paper
a strong coupled CFD-CSD method is developed to simulate the aeroelastic phenomena. The CFD solver is based on the finite-volume algorithm for the Navier-Stokes equations on unstructured grid. The CSD solver solves the aeroelastic governing equations in the modal space. Their coupling is realized by a dual-time method. The spring-based smoothing method is adopted to deform and regenerate the aerodynamic grid. Two test cases are selected to validate the authors' method for static and dynamic aeroelastity .The results of the simulation for the static aeroelastic problems of a missile wing show that the Lift Coefficient and Drag Coefficient are severally 7% and 5% lower than those don't consider the elasticity of the wing. The results for the flutter boundary prediction of the AGARD 445.6 wing have been proved much closer to the experiment than using the DLM. This method can describe the effects of fluid viscosity more exactly for highly nonlinear transonic flight conditions. The calculation has proved reliable in the subsonic regime
but not accurate enough in the supersonic regime. 2011 IEEE.
Thermal-structure analysis of supersonic dome based on three materials (EI CONFERENCE)
会议论文
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
Jiang Z.
;
Ai X.
;
Wei Q.
;
Liu B.
;
Jia H.
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浏览/下载:17/0
  |  
提交时间:2013/03/25
To a supersonic missile
a seeker could enhance the aerodynamic ability due to decrease the resistance in flying. At the same time
the primary function of a seeker has been considered as the most important equipment for a missile
due to the importance for cueing of targets and tracking for the final approach. However
the dome of a seeker
which is made up of glass
has poor mechanical performance. Especially
in the higher altitude
for a dome
in which the aerothermal and pressure loads could destroy the structure easily
it is necessary to do the thermal-structure coupled analysis due to varied materials. In the paper
to take the spherical dome of a seeker as a example
the analysis has been completed according to the varied materials consist of MgF2
Al2O3 and ZnS. The temperature loads and the pressure loads derived from the results of fluent analysis has been forced on the surface of dome
which simulates the actual Mach 2.5 in flying. According to the results of coupled analysis
the SEQV stress of the dome radium 80mm based on three materials had reached to 31MPa
which shows that the strength is sufficient for Mach 2.5
and offered the warranty to design the attaching to missile for the dome. At the same time
the results required the flexible mounting for the dome due to the displacements results
which the crystal material couldn't accept. 2011 IEEE.
Dome design and coupled thermal-mechanical analysis of supersonic missile (EI CONFERENCE)
会议论文
2009 International Conference on Optical Instruments and Technology, OIT 2009, October 19, 2009 - October 22, 2009, Shanghai, China
Xing-qiao A.
;
Qun W.
;
Hong-guang J.
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浏览/下载:39/0
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提交时间:2013/03/25
A review of high-speed flow pressure and aerodynamic heating effect on Supersonic missile's dome is given. The dome should have excellent properties in optical
mechanical and chemical characteristics. A design of dome on supersonic mode is described according to tactical guide line of a missile. The dome made of quartz which is about 8mm thick and 141mm in window diameter. To check up the reliability of the dome
a reasonable finite element model (FEM) of dome is established
and a thermal-mechanical Analysis to the dome by finite element software NASTRAN has carried on
through these can obtained the distribution of temperature field and stress field when the speed is 2.3Ma. The results indicated that the stress was concentrated in the joint of the dome end and the Missile Section
and the maximum stress was 16.4Mpa. The stress of other nodes was smaller than the allowable stress of quartz glass. Reference to the results of the analysis
a lightweight revision to the dome structural dimension and a new method of dome fixing have put forward
which can reduce the stress concentration. 2009 SPIE.
Equivalent lenses of supersonic seeker's outflow refractive index field obtained by simulation and experiment (EI CONFERENCE)
会议论文
2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments, November 16, 2008 - November 19, 2008, Beijing, China
Qun W.
;
Hongguang J.
;
Ming X.
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浏览/下载:18/0
  |  
提交时间:2013/03/25
In order to decrease the aerodynamic drag of supersonic image guide missile and design a non-spherical dome
the outflow field of the missile's dome is simulated using FLUENT. Based on the simulated results
the accurate density field of the outflow field at all kinds of flight conditions is obtained
and then the refractive index field of the outflow field is gotten according to the Gladstone-Dale law. The results show that the shock wave induces the heterogeneity of the refractive index field and the turbulent causes distortion. The outflow field is divided into several zones which are taken as equivalent lenses for aberration analysis. 2009 SPIE.
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