【作者】 杨卫民； 阎华； 谢鹏程； 李月； 李锋祥；

【Author】 YANG Weimin,YAN Hua,XIE Pengcheng,LI Yue,LI Fengxiang Beijing University of Chemical Technology,Beijing,100029

【机构】 北京化工大学；

【摘要】 本文针对最为典型的列管式换热器,建立起换热管内转子组合式强化传热装置的三维模型,对换热管内流场、温度场、压力场以及换热过程进行了模拟,得到了管内流体的流动规律和传热性能的计算结果。模拟计算结果表明,内置转子组合式强化传热装置的换热管内尤其是近壁区域,有较强的湍流度,转子与管壁之间缝隙内的流体有着明显的螺旋环绕流动,可显著提高传热系数,并具有自清洁效果。利用CAE手段解决热交换过程的瓶颈问题,可大幅度提高能源利用效率,为实现节能减排的战略目标做出贡献。更多还原

【Abstract】 This paper focus on the most typical tubular heat exchangers,build up 3-D flow model of concentric tubes inserted with rotors-assembled strand.And then the flow field,temperature field,pressure field,flow laws of the fluid and heat transfer characteristics in the tube were calculated.Simulation calcaulated results indicated that in the tubes inserted with rotors-assembled strand there achieved strong turbulence intensity,especially in the near-wall region. The fluid inside of the tube flowed in a spiral way can result in notable enhancement of heat transfer and self-cleaning effect.By means of CAE,solving the bottleneck problem of heat transfer,will hugely increase the energy utilization,make a contribution to achieving the strategic target of saving energy and reducing emissions.更多还原