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首页> 外文期刊>Chemical Engineering Science >A critical assessment on the use of k-#epsilon# turbulence models for simulation of the turbulent liquid flow inducecd by a Rushton-turbine in baffled stirred-tank reactors
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A critical assessment on the use of k-#epsilon# turbulence models for simulation of the turbulent liquid flow inducecd by a Rushton-turbine in baffled stirred-tank reactors

机译：关于使用k-ε湍流模型模拟折流搅拌釜反应器中Rushton涡轮诱导的湍流流动的关键评估

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摘要

The stirred-tank reactor (standard configuration)equipped with a Rushton turbine is theoretically investigated by solving continuity,momentum and turbulence quantity balance equations.Modelling approaches for the Rushton turbine and further important modelling aspects concerning the stirred tank are discussed.In this work the Rushton turbine is modelled with the aid of experimental data.In combination with this special modelling approach for the stirrer,the accuracy of three ad hoc applicable k-#epsilon#turbulence models in predicting mean flow and turbulence quantities is tested with the aid of three-dimensional simulations.The modification.However,in considering experimental observations and the general construction of k-#epsilon# models performs satisfactorily without modification.However,in considering experimental observations and the general construction of k-#epsilon# models it is possible to optimize one special k-#epsilon# model.Good agreement can then be achieved between measured flow details and the simulation results for vessels and impellers of different geometry.
机译：通过求解连续性，动量和湍流量平衡方程，对配备Rushton涡轮机的搅拌釜反应器（标准配置）进行了理论研究。讨论了Rushton涡轮机的建模方法以及与搅拌釜有关的其他重要建模方面。借助实验数据对Rushton涡轮机进行建模。结合搅拌器的这种特殊建模方法，借助三种方法对三个适用的临时适用k-ε湍流模型预测平均流量和湍流量的准确性进行了测试维仿真，虽然进行了修改，但是，在考虑了实验观察结果和k-＃epsilon＃模型的一般构造的情况下，可以令人满意地进行修改，但是，在考虑了实验观察结果和k-＃epsilon＃模型的一般构造的情况下，优化一个特殊的k-＃epsilon＃模型，然后可以在测量之间达成良好的一致性确定的流量细节以及不同几何形状的容器和叶轮的仿真结果。

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