微波反应器的搅拌叶轮性能数值分析及对比

发布时间：2018-04-11 05:12

本文选题：反应器 + 叶轮　；参考：《热能动力工程》2017年S1期

【摘要】：针对微波反应器加热不均匀性和搅拌系统优化问题,设计具有不同搅拌叶轮的小型微波釜式反应器,采用CFD(计算流体力学)方法研究不同叶轮对微波反应器内流动混合特征的影响规律。对简化后的微波反应器模型设计了3种叶轮,并对反应器内部的三维流场进行数值仿真,对比分析搅拌过程中装备不同叶轮的搅拌釜宏观流型、速度和功耗等特点。研究结果表明:A2、A3叶轮流型发展得更好,A3在粘度高于0.015 Pa·s的介质中更加节能,粘度达到0.065 Pa·s时,功率准数比A1低50%,在远离叶轮区域的流速更高;A1在转速高于50 r/min时更加节能,当转速为300 r/min时,功率准数为0.16。
[Abstract]:Aiming at the problems of heating inhomogeneity of microwave reactor and optimization of mixing system, a small microwave kettle reactor with different impellers was designed.The influence of different impellers on the mixing characteristics of flow in microwave reactor was studied by using CFDs (computational fluid dynamics) method.Three kinds of impellers were designed for the simplified microwave reactor model, and the three-dimensional flow field in the reactor was numerically simulated. The characteristics of macroscopic flow pattern, velocity and power consumption of stirred kettle equipped with different impellers were compared and analyzed.The results show that the flow pattern of the impeller is better developed. When the viscosity reaches 0.065 Pa / s, the power standard number is 50% lower than that of A1, and the flow rate is higher than that of A 1 when the velocity of velocity is higher than 50 r/min. When the viscosity reaches 0.065 Pa / s, A 1 is more energy efficient when the rotational speed is higher than 50 Pa / s.When the rotational speed is 300 r/min, the power standard number is 0.16.
【作者单位】：江南大学机械工程学院;
【基金】：国家自然科学基金资助项目(21606109)
【分类号】：TE667;TQ052

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