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Received: 2005-01-26

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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.7 P.741~746

10.1631/jzus.2005.A0741


The research analysis of aerodynamic numerical simulation of grid fin


Author(s):  WU Pin, MA Yong-gang, CHEN Chun

Affiliation(s):  Department of Computer Science, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   wupin@zju.edu.cn

Key Words:  Grid fin, Aerodynamic character, Numerical simulation


WU Pin, MA Yong-gang, CHEN Chun. The research analysis of aerodynamic numerical simulation of grid fin[J]. Journal of Zhejiang University Science A, 2005, 6(7): 741~746.

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author="WU Pin, MA Yong-gang, CHEN Chun",
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year="2005",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2005.A0741"
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%DOI 10.1631/jzus.2005.A0741

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T1 - The research analysis of aerodynamic numerical simulation of grid fin
A1 - WU Pin
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EP - 746
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DOI - 10.1631/jzus.2005.A0741


Abstract: 
This paper presents the results of an investigation to use arc-length mesh generation and finite volume TVD scheme to calculate Euler equations for predicting the effect of geometry parameters in reducing the drag force and improving the lift-drag ratio of grid fin in the supersonic flow regime. The effects of frame and web, whose cross section shape and thickness and spacing, on the aerodynamic character of the grid fin were studied. Calculations were made at Mach 2.5 and several angles of attack. The results were validated by comparing the computed aerodynamic coefficients against wind tunnel experimental data. Good agreement was found between computed and experimental results. The computed results suggest that parameters of the grid fin’s frame have the greatest effect on the grid fin aerodynamic character, especially on its drag force. It was concluded proper choice of appropriate grid fin geometry parameters could reduce the drag force and improve the lift-drag ratios.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] Abate, G.L., Ducherschein, R., Winchenbach, G., 1999. Free-Flight Testing of Missiles with Grid Fins. Proceedings of the 50th Aeroballistic Range Association Meeting, Pleasanton, CA.

[2] Chen, S., Khalid, M., Xu, H., 2000. A comprehensive CFD Investigation of Grid Fins as Efficient Control Surface Devices. AIAA Paper 2000-0987.

[3] Chen, S.S., Zhao, R.X., Ding, Z.S., Tan, J.J., 1999. The research of aerodynamic character of grid fin. Ballistic Journal, 11(2):89-95 (in Chinese).

[4] DeSpirito, J., Edge, H.L., Weinacht, P., Sahu, J., 2001. Computational fluid dynamics analysis of a missile with grid fins. Journal of Spacecraft and Rockets, 38(5):711-718.

[5] Harten, A., 1983. High resolution schemes for huperbolic systems of conservation laws. J Comp Phys, (49):357-393.

[6] Ma, Y.G., 2003. Aerodynamic Numerical Simulation of Grid Fin. Master Degree Thesis, Nanjing University of Science and Technology (in Chinese).

[7] Miller, M.S., Washington, W.D., 1994. An Experimental Investigation of Grid Fin Drag Reduction Techniques. AIAA Paper 94-1914-CP.

[8] Simpson, G.M., Sadler, A.J., 1998. Lattice Controls: A Comparison With Conventional, Planar Fins. Proceedings of the NATO RTO-MP-5, Missile Aerodynamics, NATO Research and Technology Organization.

[9] Sun, Y., Khalid, M., 1998. A CFD Investigation of Grid Fin Missiles. AIAA Paper 98-3571.

[10] Washington, W.D., Miller, M.S., 1998. Experimental Investigations of Grid Fin Aeodynamics: A Synopsis of Nine Wind Tunnel and Three Flight Tests. Proceedings of the NATO RTO-MP-5, Missile Aerodynamics, NATO Research and Technology Organization.

[11] Wu, P., 2003. Three-dim Numerical Simulation of APFSDS Sabots Separating and Discarding Flow Field. Ph.D Thesis, Nanjing University of Science and Technology (in Chinese).

[12] Wu, P., Zhao, R.X., 2002. The arc-length method of grid generation and its application on the flowfield numerical simulation. Nanjing University of Science and Technology Journal, 26(5):482-486 (in Chinese).

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