The Three Dimensional Numerical Simulation of Vertical Jet in Waves
The Three Dimensional Numerical Simulation of Vertical Jet in Waves
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DOI：
10.1007/978-3-540-75995-9_119
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
L. Yuan
中科院分区：
文献类型：
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作者：
L. Yuan
采用非线性k-ε湍流模型，结合VOF方法，建立了波浪中垂直湍流射流的三维数值模型。并对不同波浪参数进行了大量的数值实验。在数值实验结果的基础上，重点分析了射流初始卷吸过程中污染物浓度分布与水波参数的关系，结果表明，射流轴线呈波状周期性偏转，混合比静水强。波浪中的波周期平均速度场和浓度场与静水中的有明显不同。通过对不同波长和波高情况下的垂直速度和浓度衰减特性的比较，发现波浪对射流稀释的影响取决于波迹振幅与沿水深半宽扩展的射流的比值。不同波相上的速度场和浓度场
A three dimensional numerical model of vertical turbulent jet in waves is established by using the nonlineark- 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 put emphases upon the analysis of the relations between the distributions of the pollutant concentration and water waves’ parameters in the jet initial entrainment.Instantaneous velocity field and concentration field show that the jet axial line deflects with wave periodically and the mixing is stronger than that in static water. Wave period averaged velocity field and concentration field in waves display distinct differences with in static water. Based on the comparison of vertical velocity and concentration attenuation characters among different wave length and wave height cases, it is discovered that the effect of wave on jet dilution depends on the ratio of the wave trace amplitude to the jet expanded half width along the water depth.Velocity and concentration field on different wave phases