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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Experimental and CFD simulation of heat transfer to highly viscous fluids in an agitated vessel equipped with a non standard helical ribbon impeller
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Experimental and CFD simulation of heat transfer to highly viscous fluids in an agitated vessel equipped with a non standard helical ribbon impeller

机译：在配备非标准螺旋带状叶轮的搅拌容器中，热传递至高粘度流体的实验和CFD模拟

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摘要

In this work, heat transfer has been investigated for several Newtonian and non-Newtonian liquids agitated in a rounded bottom vessel equipped with an atypical helical ribbon impeller. Both experimental and numerical approaches were attempted. The measured rates of heat transfer from the wall of the vessel to the agitated liquid allow the comparison of heat transfer performances of this mixing system with those obtained on stnadard helical ribbon impeller. A method was indicated to correlate non-Newtonian results with thos established with Newtonian liquids. No temperature gradient was detected in the bulk. Numerical approach allows the local heat transfer coefficient to be obtained, and underlines the difficulty to relate global heat transfer coefficient to the thickness of the thermal boundary layer.
机译：在这项工作中，已经研究了在装有非典型螺旋带状叶轮的圆底容器中搅拌的几种牛顿液体和非牛顿液体的传热。尝试了实验和数值方法。从容器壁到搅拌的液体的传热速率的实测值可以将这种混合系统的传热性能与在stnadard螺旋带叶轮上获得的传热性能进行比较。指出了一种将非牛顿结果与牛顿液体建立的方法相关的方法。在主体中未检测到温度梯度。数值方法允许获得局部传热系数，并且强调了将整体传热系数与热边界层的厚度相关联的困难。

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