| 基于改进的Logvinovich法对带横摇运动非对称楔形体入水砰击力的计算(英文) |
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| 引用本文： | 秦洪德,赵林岳,申静.基于改进的Logvinovich法对带横摇运动非对称楔形体入水砰击力的计算(英文)[J].船舶与海洋工程学报,2011,10(2):184-189. |
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| 作者姓名： | 秦洪德 赵林岳 申静 |
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| 作者单位： | College of Shipbuilding Engineering, Harbin Engineering University |
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| 基金项目： | Supported by Supported by “111 Program” (B07019) |
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| 摘 要： | The water entry problem of an asymmetric wedge with roll motion was analyzed by the method of a modified Logvinovich model (MLM). The MLM is a kind of analytical model based on the Wagner method, which linearizes the free surface condition and body boundary condition. The difference is that the MLM applies a nonlinear Bernoulli equation to obtain pressure distribution, which has been proven to be helpful to enhance the accuracy of hydrodynamic loads. The Wagner condition in this paper was generalized to solve the problem of the water entry of a wedge body with rotational velocity. The comparison of wet width between the MLM and a fully nonlinear numerical approach was given, and they agree well with each other. The effect of angular velocity on the hydrodynamic loads of a wedge body was investigated.
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| 关 键 词： | water entry roll motion modified Logvinovich model(MLM) asymmetric wedge |
| 收稿时间： | 19 December 2007 |
A modified Logvinovich model for hydrodynamic loads on an asymmetric wedge entering water with a roll motion |
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| Hongde Qin,Linyue Zhao,Jing Shen.A modified Logvinovich model for hydrodynamic loads on an asymmetric wedge entering water with a roll motion[J].Journal of Marine Science and Application,2011,10(2):184-189. |
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| Authors: | Hongde Qin Linyue Zhao Jing Shen |
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| Institution: | (1) Department of Marine Technology, Centre for Ships and Ocean Structures, Norwegian University of Science and Technology, 7491 Trondheim, Norway |
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| Abstract: | The water entry problem of an asymmetric wedge with roll motion was analyzed by the method of a modified Logvinovich model
(MLM). The MLM is a kind of analytical model based on the Wagner method, which linearizes the free surface condition and body
boundary condition. The difference is that the MLM applies a nonlinear Bernoulli equation to obtain pressure distribution,
which has been proven to be helpful to enhance the accuracy of hydrodynamic loads. The Wagner condition in this paper was
generalized to solve the problem of the water entry of a wedge body with rotational velocity. The comparison of wet width
between the MLM and a fully nonlinear numerical approach was given, and they agree well with each other. The effect of angular
velocity on the hydrodynamic loads of a wedge body was investigated. |
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