Browse > Article
http://dx.doi.org/10.1016/j.ijnaoe.2018.09.004

Computational analysis of compressibility effects on cavity dynamics in high-speed water-entry  

Chen, Chen (School of Astronautics, Harbin Institute of Technology)
Sun, Tiezhi (School of Naval Architecture, Dalian University of Technology)
Wei, Yingjie (School of Astronautics, Harbin Institute of Technology)
Wang, Cong (School of Astronautics, Harbin Institute of Technology)
Publication Information
International Journal of Naval Architecture and Ocean Engineering / v.11, no.1, 2019 , pp. 495-509 More about this Journal
Abstract
The objective of this study is to analyze the compressibility effects of multiphase cavitating flow during the water-entry process. For this purpose, the water-entry of a projectile at transonic speed is investigated computationally. A temperature-adjusted Tait equation is used to describe the compressibility effects in water, and air and vapor are treated as ideal gases. First, the computational methodology is validated by comparing the simulation results with the experimental measurements of drag coefficient and the theoretical results of cavity shape. Second, based on the computational methodology, the hydrodynamic characteristics of flow are investigated. After analyzing the cavitating flow in compressible and incompressible fluids, the characteristics under compressible conditions are focused upon. The results show that the compressibility effects play a significant role in the development of cavitation and the pressure inside the cavity. More specifically, the drag coefficient and cavity size tend to be larger in the compressible case than those in the incompressible case. Furthermore, the influence of entry velocities on the hydrodynamic characteristics is investigated to provide an insight into the compressibility effects on cavitating flow. The results show that the drag coefficient and the impact pressure vary with the entry velocity, and the prediction formulas for drag coefficient and impact pressure are established respectively in the present study.
Keywords
High-speed; Water-entry; Compressibility; Cavitation; Multiphase flow;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Cole, R.H., 1948. Underwater Explosions. Princeton University Press, Princeton, NJ, pp. 38-39.
2 Dong, C., Sun, S., Song, H., et al., 2018. Numerical and experimental study on the impact between a free falling wedge and water. Int. J. Naval Architec. Ocean Eng. 2018, 1-11.
3 Harkins, T.K., Steves, H.K., Goeller, J.E., 2001. Supercavitating Water-entry Projectile. US H1938 H1.
4 Savchenko, Y.N., Vlasenko, Y.D., Semenenko, V.N., 1999. Experimental studies of high-speed cavitated flows. Int. J. Fluid Mech. Res. 26 (3), 365-374.   DOI
5 Serebryakov, V., Schnerr, G., 2003. Some Problems of Hydrodynamics for Sub- and Supersonic Motion in Water with Supercavitation. Fifth International Symposium on Cavitation, Osaka, Japan, pp. 1-19.
6 Serebryakov, V.V., Kirschner, I.N., Schnerr, G.H., 2009. High speed motion in water with supercavitation for sub-, trans-, supersonic Mach numbers. In: Proceedings of the 7th International Symposium on Cavitation(CAV2009) Ann Arbor, Michigan, USA. August 17-22.
7 Shi, H.H., Itoh, M., 2009. High-speed Photography of Supercavitation and Multiphase Flows in Water Entry. 7th International symposium on cavitation, Michigan, USA.
8 Shi, H.H., Takami, T., 2001. Hydrodynamic behavior of an underwater moving body after water entry. Acta Mech. Sin. 17 (1), 35-44.   DOI
9 Shi, H.H., Itoh, M., Takami, T., 2000. Optical observation of the supercavition induced by high-speed water entry. J. Fluid Eng. 122 (4), 806-810.   DOI
10 Truscott, T.T., 2009. Cavity Dynamics of Water Entry for Spheres and Ballistic Projectiles. Massachusetts Institute of Technology.
11 Vasin, A.D., 2001. Some Problems of Supersonic Cavitation Flows. Fourth International Symposium on Cavitation, Pasadena, USA, pp. 1-14.
12 Vasin, A.D., 2002. Supercavities in Compressible Fluid. The Brussels, Belgium. Research and Technology Organization of NATO, pp. 1-29.
13 Verhagen, J.H.G., 1967. The impact of a flat plate on a water surface. J. Ship Ris. 11 (4), 211-223.   DOI
14 Launder, B.E., Spalding, D.B., 1972. Lectures in Mathematical Models of Turbulence. Academic Press, London, England.
15 Worthington, A.M., Cole, R.S., 1896. Impact with a liquid surface studied by the aid of instantaneous photography. Phil. Trans. Roy. Soc. Lond. 189, 137-148.
16 Huang, C., Luo, K., Bai, J., et al., 2016a. Influence of liquid's compressibility on supercavitating flow. J. Shanghai Jiao Tong Univ. (Sci.) 50 (8), 1241-1245 (in Chinese).
17 Huang, C., Dang, J.J., Li, D.J., et al., 2016b. Influence of the transonic motion on resistance and cavitation characteristics of projectiles. Acta Armamentarii 37 (8), 1482-1488 (in Chinese).
18 Karman, V., 1929. The Impact on Seaplane Floats during Landing. (NACA TN, 321). Technical Report Archive & Image Library.
19 Korobkin, A., 1992. Blunt-body impact on a compressible liquid surface. J. Fluid Mech. 244, 437-453.   DOI
20 Korobkin, A., 1994. Blunt-body impact on the free surface of a compressible liqud. J. Fluid Mech. 263, 319-342.   DOI
21 Liang, T.H., Zhang, M.D., Li, D.Q., et al., 2017. Numerical simulation of high speed compressible supercavitaion flow. In: Proceedings of the 14th National Congress on Hydrodynamics & 28th National Conference on Hydrodynamics, pp. 357-362 (in Chinese).
22 Logvinovich, G.V., 1973. Hydrodynamics of Flows with Free Boundaries. Hasted Press.
23 Ma, Q.P., 2014. Investigation of Multiphase Flow Characteristics Induced by Water Entry of High-speed Projectile. Harbin Institute of Technology (in Chinese).
24 Neaves, M.D., Edwards, J.R., 2004. Time-accurate calculations of axisymmetric water entry for a supercavitating projectile. In: AIAA Fluid Dynamics Conference.
25 Saurel, R., Cocchi, P., Butler, P.B., 1999. Numerical study of cavitation in the wake of a hypervelocity underwater projectile. J. Propul. Power 15 (4), 513-522.   DOI
26 Charters, A.C., Thomas, R.N., 1945. The aerodynamic performance of small spheres from subsonic to high supersonic velocities. J. Aeronaut. Sci. 12 (4), 468-476.   DOI
27 Yang, H., Sun, L.Q., Gong, X.C., et al., 2014. 3D numerical simulation of slamming load character for water entry of an elastic structure. J. Vib. Shock 33 (19), 28-34 in Chinese.
28 Yi, W.J., Xiong, T.H., Wang, Z.Y., et al., 2009. Experimental researches on drag characteristics of supercavitation bodies at small cavitation number. J. Hydrodyn. Ser. A 24 (1), 1-6.
29 Yves-Marie, S., 2014. Oblique water entry of a three dimensional body. Int. J. Naval Architec. Ocean Eng. 6 (2014), 1197-1208.   DOI
30 Zwart, P.J., Gerber, A.G., Belamri, T., 2004. A two-phase flow model for predicting cavitation dynamics. In: Fifth International Conference on Multiphase Flow, Yokohama, Japan.
31 Chuang, S.L., 1970. Investigation of Impact of Rigid and Elastic Bodies with Water. Structural Analysis.