An experimental study on water entry of asymmetric wedges

被引：94

作者：

Barjasteh, Mojtaba ^{[1
]}

Zeraatgar, Hamid ^{[1
]}

Javaherian, Mohammad Javad ^{[1
]}

机构：

[1] Amirkabir Univ Technol, Fac Maritime Engn, ALH, Tehran 158754413, Iran

来源：

APPLIED OCEAN RESEARCH | 2016年 / 58卷

关键词：

Asymmetric water entry; Asymmetric impact; Free falling; Wedge; Inclination angle; NUMERICAL-SIMULATION; IMPACT; ANGLES;

D O I：

10.1016/j.apor.2016.04.013

中图分类号：

P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

The aim of the paper is to provide an experimental reference for investigation of asymmetric water entry of wedges. Parameters of the study include initial deadrise angle, inclination angle and impact speed. Initial deadrise angles of the wedges were 20 degrees and 30 degrees with inclination angles ranging from 0 to 15 in 5 increments. Wedges were freely fallen from three different heights. Time histories of impact pressure and body acceleration were recorded. Sampling rate of measurements were set to 25 KHz. Main configuration of each test including mass of the wedge and water level were kept unchanged during all experiments. Additionally, several calibration tests were conducted to assess the repeatability and accuracy of the recorded data. The experimental results are compared with different entry theories and other available experiments. The comparison shows a reasonable agreement and indicates that the inclination angle can dramatically affect the impact pressure experienced by the wedges. Finally, the results show that the traditional asymmetric theories are not appropriate for all inclination angles. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：292 / 304

页数：13

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