非静态环境中负浮力射流模拟研究

Simulation Analysis of Negatively Buoyant Jet in Non-Stationary Environment Based on Fluent

以计算流体学软件Fluent为基础,通过求解基于雷诺数平均法(RANS)的标准紊流模型对非静态环境中第一种形式的负浮力射流进行了模拟和研究,并用Tecplot处理了Fluent计算求得的曲线,由此得出了该种形式的负浮力射流从开始到结束过程中不同时刻的水流流态图以及整个流动过程的流线分布图。将模拟结果与理论计算结果进行对比、分析,表明该模拟结果与理论计算结果和实际情况吻合,说明该模型和方法能够计算此类负浮力射流。

In this paper,based on the VOF model provided by computational fluid dynamics software Fluent,through solving the standard turbu-lence model based on RANS,it performed the simulation and study of negatively buoyant jet of the first form in non-stationary environment,finally got the flow pattern figures at different times from the beginning to the end of the jet and the streamline distribution figure of the whole process. It compared and analyzed the results of simulation and theoretical calculations. The results show that the simulation results are in good agreement with those of theoretical calculations,which proves that the model built and the methods selected can simulate this kind of negatively buoyant jet.