波流环境中紊动射流的垂向二维数值模拟  

The vertical two dimensional numerical simulation of turbulent jet in waves and currents

作　　者：袁丽蓉[1] 沈永明[2] 唐军[2] 

机构地区：[1]中山大学广东省近岸海洋工程重点试验室,广州510275 [2]大连理工大学海岸和近海工程国家重点实验室,大连116023

出　　处：《水力发电学报》2007年第4期40-45,共6页Journal of Hydroelectric Engineering

基　　金：国家重点基础研究发展计划(973)项目(2006CB403302)

摘　　要：实验显示在持续的波流环境中污染物稀释度比无波环境有显著提高,但是关于波浪要素与污染物浓度分布之间的关系的结论还不统一,还需要在实验及数值计算等方面对这个课题作更深入的研究。本文采用非线性双方程k-ε紊流模型和VOF方法建立了波流环境中紊动射流的垂向二维数值模型,模拟了波流环境下的紊动射流。通过和实验对比验证了数学模型。重点分析了射流初始稀释阶段污染物浓度分布和波浪要素的关系。Experimental results show that pollutants dilution is significantly higher in the persistent waves and currents than in the pure currents. But the conclusions of the relationships between parameters of waves and pollutants concentration are still not identical and need more researches, both experiment and numerical model are still needed to study it. In this paper, a vertical two dimensional numerical model of turbulent jet in waves and currents is established by using the two-equation κ-ε nonlinear turbulence model with VOF method, and the numerical model has been validated by experimental results, and the good agreement between the numerical and experimental results has been achieved. This paper puts emphases on the analysis of the relations between the distributions of the pollutant concentration and water waves in the jet initial entrainment phase.

关 键 词：环境水力学 波流 紊流模型 VOF方法 污染物浓度 

分 类 号：X143[环境科学与工程—环境科学] TV131[水利工程—水力学及河流动力学]