CAJ | 학술논문

实验结果显示在持续的波浪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研究还不充分,结论还不统一,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.本文采用非线性紊流模型和VOF方法建立了波浪环境中垂向紊动射流的三维数值模型,通过改变波浪参数做了大量的数值模拟实验.基于数值模拟结果,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.
실험결과현시재지속적파랑배경중오염물희석도비무파배경유현저제고,단시관우파랑요소여오염물농도분포지간적관계적연구환불충분,결론환불통일,수요재실험급수치계산등방면대저개과제작경심입적연구.본문채용비선성문류모형화VOF방법건립료파랑배경중수향문동사류적삼유수치모형,통과개변파랑삼수주료대량적수치모의실험.기우수치모의결과,중점분석료사류초시희석계단오염물농도분포화파랑요소적관계.
Experimental results show that pollutants dilution is significantly higher in the persistent waves than that in the static water. But the studies on the relationships between wave's parameters and pollutants concentration are not enough and the conclusions are still not identical now. So, further investigations both by experimental way and numerical way are still needed. In this paper, a three dimensional numerical model of vertical turbulent jet in waves is established by using the nonlinear k -ε turbulence model with VOF method. And a lot of numerical experiments with different wave parameters are carried out. Based on the numerical experiments results, the paper focuses on the analysis of the relations between the distributions of the pollutant concentration and water waves' parameters during jet initial entrainment phase.