Research on the relationship between moving patterns of submerged body and the features of induced internal waves in two layer fluid

被引：0

作者：

Ding Y. ^{[1
]}

Duan F. ^{[1
]}

Han P.-P. ^{[1
]}

Niu M.-C. ^{[1
]}

机构：

[1] College of Shipbuilding Engineering, Harbin Engineering University, Harbin

来源：

Chuan Bo Li Xue/Journal of Ship Mechanics | 2016年 / 20卷 / 05期

关键词：

Internal wave; Submerged body wake; Two layer fluid; Unsteady motion;

D O I：

10.3969/j.issn.1007-7294.2016.05.002

中图分类号：

学科分类号：

摘要：

The motion of submerged body in stratified fluids will excite the generation of internal waves. In this paper, by control the motion of submerged body using user defined files, using layering to ensure the boundary layer will not be influenced by the motion of submerged body. The waveform of interface was captured by means of solving the volume fraction of each fluids based on multiphase flow model of RANS equation. The calculation results of uniform motion were in good agreement with experimental results. Comparing the characteristics of variation in internal wave heights and lengths with densimetric Froude number at different depth the critical densimetric Froude number induced the maximum internal wave heights was obtained by this method. The interaction of submerged body acceleration and deceleration motion with induced internal wave at critical densimetric Froude number was mainly studied. © 2016, Editorial Board of Journal of Ship Mechanics. All right reserved.

引用

页码：523 / 529

页数：6

共 11 条

[1]

Lu D.Q., Chen T., Surface and interfacial gravity waves induced by an impulsive disturbance in a two-layer inviscid fluid, Journal of Hydrodynamics, Ser. B, 21, 1, pp. 26-33, (2009)

[2]

Lu D.Q., Chwang A.T., Interfacial waves due to a singularity in a system of two semi-infinite fluids, Physics of Fluids (1994-Present), 17, 10, pp. 102-107, (2005)

[3]

Yeung R.W.N., Waves generated by a moving source in a two-layer ocean of finite depth, Journal of Engineering Mathematics, 35, 1, pp. 85-107, (1999)

[4]

Gang W., Jiachun L., Shiqiang D., Surface effects of internal wave generated by a moving source in a two-layer fluid of finite depth, Applied Mathematics and Mechanics, 24, 9, pp. 1025-1040, (2003)

[5]

Xu Z., Chen X., Sturova I.V., Surface characters of internal waves generated by Rankine ovoid, Acta Mechanica Sinica, 22, 5, pp. 417-423, (2006)

[6]

Zhu W., You Y.X., Miao G., Et al., Waves generated by a 3 D moving body in a two-layer fluid of finite depth, Journal of Hydrodynamics, Series B, 17, 1, pp. 92-101, (2005)

[7]

Gourlay M.J.W.J.F.D., Direct numerical simulations of initially turbulent wakes

[8]

Fritts D., Gourlay M., Orlando W., Et al., Numerical simulation of late wakes in stratified and sheared flows, pp. 206-210, (2003)

[9]

Chernykh G.G., Moshkin N.P., Fomina A.V., Dynamics of turbulent wake with small excess momentum in stratified media, Communications in Nonlinear Science and Numerical Simulation, 14, 4, pp. 1307-1323, (2009)

[10]

Brackbill J.U., Kothe D.B., Zemach C., A continuum method for modeling surface tension, J Comput. Phys., 100, pp. 335-354, (1992)

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