Experimental and numerical study on the oblique water-entry impact of a cavitating vehicle with a disk cavitator
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
In this paper, the oblique water-entry impact of a vehicle with a disk cavitator is studied experimentally and numerically. The effectiveness and accuracy of the numerical simulation are verified quantitatively by the experiments in this paper and the data available in the literature. Then, the numerical model is used to simulate the hydrodynamic characteristics and flow patterns of the vehicle under different entry conditions, and the axial force is found to be an important parameter. The influences of entry angle, entry speed and cavitator area on the axial force are studied. The variation law of the force coefficient and the dimensionless penetration distance at the peak of the axial force are revealed. The research conclusions are beneficial to engineering calculations on the impact force of a vehicle with a disk cavitator over a wide range of water-entry parameters.
Abstract
In this paper, the oblique water-entry impact of a vehicle with a disk cavitator is studied experimentally and numerically. The effectiveness and accuracy of the numerical simulation are verified quantitatively by the experiments in this paper and the data available in the literature. Then, the numerical model is used to simulate the hydrodynamic characteristics and flow patterns of the vehicle under different entry conditions, and the axial force is found to be an important parameter. The influences of entry angle, entry speed and cavitator area on the axial force are studied. The variation law of the force coefficient and the dimensionless penetration distance at the peak of the axial force are revealed. The research conclusions are beneficial to engineering calculations on the impact force of a vehicle with a disk cavitator over a wide range of water-entry parameters.
참고문헌 (25)
- Abelson, H. I., "Pressure measurement in the water-entry cavity", J. Fluid Mech, 44, pp.129~144 (1970)
- Alaoui, A. E. M., "Experimental study of coefficients during vertical water entry of axisymmetric rigid shapes at constant speeds", Appl. Ocean Res, 37, pp.183~197 (2012)
- Baldwin, J. L., "An Experimental Investigation of Water Entry", Naval Ordance Labratory, ~ (1972)
- Bodily, K. G., "The water entry of slender axisymmetric bodies", Phys. Fluids, 26(7), pp.072108~ (2014)
- Fluent, "Ansys 15.0 Theory Guide", Ansys Inc, ~ (2013)
- Gong, K., "Water entry of a wedge based on SPH model with an improved boundary treatment", J. Hydrodynam. Ser. B, 21(6), pp.750~757 (2009)
- Guo, Z., "An investigation into horizontal water entry behaviors of projectiles with different nose shapes", Int. J. Impact Eng, 49(2), pp.43~60 (2012)
- Guo, Z. T., "Experimental and theoretical study on the high-speed horizontal water entry behaviors of cylindrical projectiles", J. Hydrodynam. Ser. B, 24(2), pp.217~225 (2012)
- Iranmanesh, A., "A three-dimensional numerical approach on water entry of a horizontal circular cylinder using the volume of fluid technique", Ocean Eng, 130, pp.557~566 (2017)
- Korobkin, A. A., "Initial stage of water impact", Annu. Rev. Fluid Mech, 20(1), pp.159~185 (1988)
- Lee, M., "Cavity dynamics in high-speed water entry", Phys. Fluids, 9(3), pp.540~550 (1997)
- May, A., "Review of water-entry theory and data", J. Hydronautics, 4(4), pp.140~142 (1970)
- Mirzaii, I., "Modeling free surface flows in presence of an arbitrary moving object", Int. J. Multiphas. Flow, 39, pp.216~226 (2012)
- Nguyen, V. T., "NaviereStokes solver for water entry bodies with moving Chimera grid method in 6DOF motions", Comput. Fluids, 140, pp.19~38 (2016)
- Nguyen, V. T., "Numerical analysis of water impact forces using a dual-time pseudo-compressibility method and volumeof-fluid interface tracking algorithm", Comput. Fluids, 103, pp.18~33 (2014)
- Park, M. S., "Numerical study of impact force and ricochet behavior of high speed water-entry bodies", Comput. Fluids, 32(7), pp.939~951 (2003)
- Qi, D., "Investigation of water entry impact forces on airborne-launched AUVs", Engineering Applications of Comput. Fluid Mech, 10(1), pp.473~484 (2016)
- Seddon, C. M., "Review of water entry with applications to aerospace structures", Int. J. Impact Eng, 32(7), pp.1045~1067 (2006)
- Shi, S. G., "Experimental study on the pressure characteristic of high-speed slender body water entry", Chinese J. Phys. Appl. Mech, 35(2), pp.223~228 (2018)
- The Impact on Seaplane Floats during Landing, "Von Karman, T.", National Advisory Committee for Aeronautics, ~, pp.NACA TN321 (1929)
- Wagner, H., "Phenomena associated with impacts and sliding on liquid surfaces", Math Mech, 12(4), pp.193~215 (1932)
- Wei, Z., "Experimental study on water entry of circular cylinders with inclined angles", J. Mar. Sci. Technol, 20(4), pp.722~738 (2015)
- Yuan, X. L., "On the cavity pressure during the water-entry of a supercavitating vehicle", Oceans-2017 (2017)
- Yuan, X. L., "Hydrodynamic characteristics of a supercavitating vehicle's aft body", Ocean Eng, 114, pp.37~46 (2016)
- Zhang, Y. W., "Fluid Dynamics of Supercavitating Underwater Vehicles" (2014), National Defense Industry Press