Abstract We report a joint experimental, numerical and theoretical study of particle residence times in a novel vortex-based vessel for thermal processing of suspended particles. The tracer pulse-response method, in which the particle phase itself is employed as the tracer, is used to measure the particle residence time distribution (RTD) within a laboratory-scale model of a class of Solar Expanding Vortex Receiver-Reactor (SEVR). The operating parameters of particle size, gas volumetric flow rate and inlet velocity were systematically varied to assess their influence on the particle RTD and to determine the mechanisms controlling the behaviour of the two-phase flow in the SEVR. The particle RTD behaviour is also described by a compartment model consisting of a small plug flow reactor followed by a series of two interconnected continuously-stirred tank reactors (CSTRs).

中文翻译：

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基于涡旋的太阳能粒子接收器反应器中的粒子停留时间分布：实验、数值和理论研究

摘要 我们报告了对用于悬浮颗粒热处理的新型涡流容器中颗粒停留时间的联合实验、数值和理论研究。采用粒子相本身作为示踪剂的示踪脉冲响应方法，用于测量一类太阳能膨胀涡流接收器-反应堆 (SEVR) 实验室规模模型内的粒子停留时间分布 (RTD) . 系统地改变颗粒尺寸、气体体积流速和入口速度的操作参数以评估它们对颗粒 RTD 的影响并确定控制 SEVR 中两相流行为的机制。