This paper presents the numerical simulation of single, circular, turbulent, thermal jets discharged into an ambient fluid body with a uniform cross flow. The study utilizes a 3D hydrodynamic model to predict the dynamics of the evolving jets, with the model simulations calibrated against benchmark laboratory experimental datasets. Within the numerical-experimental model comparisons, the mean centreline temperature and velocity fields of the evolving jets are investigated in order to understand and predict the jet diffusion characteristics within the flowing ambient fluid body. Direct comparison between the numerical model predictions and laboratory datasets reveals that, with appropriate parameterization of the mixing processes and the selection of an appropriate numerical grid resolution, the large-scale hydrodynamic model can simulate both the near- and far-field thermal jet behaviour with good overall agreement, thus revealing a valid modelling tool used by environmental regulators for assessing the conformity of water quality of marine wastewater discharges.

中文翻译：

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使用大型流体动力学模型对环境交叉流中的圆形热射流进行计算模拟

本文介绍了以均匀交叉流排放到周围流体体中的单个圆形湍流热射流的数值模拟。该研究利用 3D 流体动力学模型来预测不断演变的射流的动力学，模型模拟根据基准实验室实验数据集进行校准。在数值实验模型比较中，研究了演化射流的平均中心线温度和速度场，以了解和预测流动环境流体体内的射流扩散特性。数值模型预测与实验室数据集之间的直接比较表明，通过适当的混合过程参数化和选择适当的数值网格分辨率，