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潜堤上破碎波浪传播变形的数值模型及其验证

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Indexed by:期刊论文

Date of Publication:2011-12-15

Journal:海洋通报

Included Journals:PKU、ISTIC、CSCD

Volume:30

Issue:6

Page Number:633-636,667

ISSN No.:1001-6392

Key Words:Boussinesq方程:破碎波;紊动粘性

Abstract:为模拟潜堤上破碎波浪传播时产生能量的耗散这一特性,在改进的具有四阶色散的Boussinesq水波方程中中入二阶紊动粘性项,建立了考虑波浪破碎的水波数学模型.在非交错网格下建立了有限差分数值模型,并利用三阶Adams-Bash forth格式预报、四阶Adams-Mouton格式校正对数值模型进行求解.通过数值试验,模拟了不同坡度的潜堤上破碎波浪传播变形,并将数值计算波面时间历程与实验结果进行了比较,二者基本吻合,这说明在四阶Boussinesq水波模型中引入二阶粘性项来考虑波浪破碎引起能量耗散的做法是有效的.

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