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液体晃荡荷载与液舱运动相位关系的数值研究

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Indexed by:期刊论文

Date of Publication:2015-08-15

Journal:船舶力学

Included Journals:EI、PKU、ISTIC、CSCD、Scopus

Volume:19

Issue:8

Page Number:919-926

ISSN No.:1007-7294

Key Words:液体晃荡整体荷载;相位关系;数值模拟;局部冲击荷载;模型实验

Abstract:该文从相位角度出发,采用CFD的数值方法研究简谐激励下液体晃荡整体荷载与液舱运动的相位关系。首先,通过模型实验验证数值方法的可靠性,然后,以横荡激励下的二维矩形舱晃荡为例,研究不同载液率工况下,相位差和晃荡整体荷载幅值随激励频率的变化关系。结果表明:基于VOF法的数值模拟能较好地模拟液舱内液体晃荡;在自由面共振频率附近(0.8 f0~1.2 f0),相位差随激励频率增加而增大;频率比相同时,相位差随载液率的升高而增大;相位差90°时,相位差对应频率低于共振频率,且与晃荡荷载最大值对应频率基本相等。

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