Numerical study of periodically forced-pitching of a supercavitating vehicle

Journal of Hydrodynamics, Ser. B - Tập 22 - Trang 856-861 - 2010
Zhan-cheng Pan1, Chuan-jing Lu1,2, Ying Chen1, Shi-liang Hu1
1Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai, China
2State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai, China

Tóm tắt

The unsteady behaviors, such as surging, heaving and pitching motion, which often occur during the advancing of supercavitating vehicle, has significant effect on the stability of supercavitaty and the trajectory of the vehicle. This paper presents a 3-dimentional numerical simulation of periodically forced-pitching of supercavitating vehicle. Based on the finite volume method and the pressure-based segregate algorithm, in the framework of Mixture multiphase model, associated with dynamic mesh method, the Reynolds-Averaged Navier-Stokes equations are solved for the ventilated cavitating flow field in a cavitation tunnel. For both steady-state and dynamic cases, the numerical results agree with the experimental results very well. When the vehicle is pitching periodically, the profile of the supercavity doesn’t vary significantly. The pressure inside the cavity fluctuates slightly during the pitching motion, while the pressure fluctuates significantly at the rear of the down-line of the vehicle. The hydrodynamic forces of the vehicle oscillated periodically, but not linear related to the pitching motion.

Tài liệu tham khảo

EPSHTEIN L A. Methods of theory of dimensionality and similarity in problems of ship hydromechanics. Sudostroenie Publishing House, Leningrad, 1970[in Russian].

REICHARDT H. Cavitation investigation on henschel water — running bodies [R]. Ministry of Supply (British), Transl. 62 (from Germany), 1946.

SAVCHENKO Y N, VLASENKO Y D, SEMENENKO V N. Experimental study of high-speed cavitated flows [J]. International Journal of Fluid Mechanics Research, 1999, 26(3): 365–374.

KUBOTA A, KUTO H, YAMAGUCHI H. A new modeling of cavitating flows: a numerical study of unsteady cavitation on a hydrofoil section [J]. J. Fluid Mech., 1992, 240(7): 59–96.

KULKAMI S, PRATAP R. Studies on dynamics of a supercavitating projectile [J]. Applied Mathematical Modeling, 2000(24): 113–129.

RAND R, PRATAP R, AMANI D, et al. Impact dynamics of a supercavitating underwater projectile [C]. Proceedings of the Third International Symposium on Performance Enhancement of Marine Applications. Newport. 1997: 215–223.

LINDAU J W, KUNZ R F, et al. Fully coupled, 6-DOF to URANS, modeling of cavitating flows around a supercavitating vehicle [C]. Fifth International Symposium on Cavitation, Osaka, Japan, November 1–4, 2003.

CHEN X, LU C J, LI J, et al. The wall effect on ventilated cavitating flows in closed cavitation tunnels [J]. Journal of Hydrodynamics, 2008, 20(5): 561–566.

Li Ji-tao. Experimental investigations and simulations to the ventilated supercavitating flows on dynamic model manipulated with pitching motion [C]. Ph. D Thesis, Shanghai, Shanghai Jiao-tong University, 2009. (in Chinese)

PAN Z C, LU C J, Li J, et al. Numerical simulation of force-surging of supercavitating vehicle [C]. Proceedings of the 21st National Conference on Hydrodynamics and 8th National Congress on Hydrodynamics and the Cross-Strait Conference on Ship and Ocean Engineering Hydrodynamics. Shandong, China, August, 2008. (in Chinese)

YAKHOT V, ORSZAG S A. Renormalization group analysis of turbulence I: Basic theory [J]. Journal of Scientific Computing, 1986, 1(1): 1–51.

KIM S E, CHOUDHURY D. A near-wall treatment using wall functions sensitized to pressure gradient [J]. In ASME FEN Vol. 217, Separated and Complex Flows. ASME, 1995.

PATANKAR S V. Numerical heat transfer and fluid [M]. Washington, D. C.: Hemisphere, 1980.

Thông tin
Thông tin xuất bản

Journal of Hydrodynamics, Ser. B

Tập 22

856-861

Thông tin tác giả