Abstract Computational fluid dynamics (CFD) was used to investigate the influence of complex rheological properties for Bingham-pseudoplastic fluids on hydrodynamics and heat transfer performance in an industrial polymerization coiled agitated reactor. The fluid rheology was described by the Herschel–Bulkley rheological model. The power consumption obtained by CFD simulation was in good agreement with the plant data. The relationship between the Metzner–Otto constant and power-law index for dual axial flow impellers was investigated. The hydrodynamics strongly depends on the rheological parameters and rotational speed. The flow domain is composed of two parts: the cavern around the impellers, and the stagnant zone adjacent to helical coils and tank wall which resulting in poor mixing and heat transfer performance. With the increase of rotational speed, the stagnant zone could be effectively eliminated, while the heat transfer performance could be significantly improved.

中文翻译：

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工业连续搅拌罐中宾汉-假塑性流体的流体力学和传热数值研究

摘要 计算流体动力学 (CFD) 用于研究宾汉-假塑性流体的复杂流变特性对工业聚合螺旋搅拌反应器中流体动力学和传热性能的影响。流体流变由 Herschel-Bulkley 流变模型描述。通过 CFD 模拟获得的功耗与工厂数据非常吻合。研究了双轴流叶轮的 Metzner-Otto 常数和幂律指数之间的关系。流体动力学强烈依赖于流变参数和转速。流域由两部分组成：叶轮周围的空腔，以及与螺旋盘管和罐壁相邻的停滞区，导致混合和传热性能不佳。