水科学进展2012，Vol.23Issue(1)：104-109,6.DOI:32.1309.P.20120104.2012.010
波浪作用下沙坝剖面形成过程的数值模拟
Numerical simulation of wave-induced sandbar formation
摘要
Abstract
A process-based numerical model is developed to simulate the formation of a sandbar beach profile, which includes a set of sub-models for wave, undertow, sediment transport, and bed evolution. The model is validated to simulate the transformation of a gently sloping beach profile to a sandbar beach profile during 12 hours under random waves. The calculated wave height, undertow velocity, sediment transport rate and bed elevation agree well with the measured data. Additional numerical tests are performed to investigate the effects of the surface roller slope, the Schmidt number and the bed repose angle on the hydrodynamics and the resulting profile evolution. It is demonstrated that the present model can well represent the important physical mechanisms of the wave-induced sandbar formation.关键词
波浪/泥沙运动/沙坝/数学模型Key words
wave/ sediment transport/ sandbar/ numerical model分类
海洋科学引用本文复制引用
张弛,郑金海,王义刚..波浪作用下沙坝剖面形成过程的数值模拟[J].水科学进展,2012,23(1):104-109,6.基金项目
国家重点基础研究发展计划(973)资助项目(2010CB429002) （973）
河海大学水文水资源与水利工程科学国家重点实验室专项经费资助项目(2009585812) （2009585812）
