Experimental investigation of fluid flow and heat transfer in a randomly packed bed of sinter particles
作者： Yan Liu , Jingyu Wang , Zhilong Cheng , Jian Yang , Qiuwang Wang
DOI: 10.1016/J.IJHEATMASSTRANSFER.2016.03.107
关键词: Heat transfer coefficient 、 Mass transfer 、 Nusselt number 、 Fluid dynamics 、 Thermodynamics 、 Pressure drop 、 Materials science 、 Packed bed 、 Convective heat transfer 、 Heat transfer
摘要: Abstract Fluid flow and heat transfer in a randomly packed bed of sinter particles (RPBSP) is experimentally investigated. Based on the Chilton–Colburn analogy, performance obtained by naphthalene sublimation technique. The particles, which are coated with naphthalene, sublimated to obtain mass characteristics. results pressure drop (Δp) RPBSP show that most experimental values within ±20% deviations modified Ergun’s equation. Nusselt number (Nu) indicate that, characteristics irregular different from regular surface particles. Slopes correlations larger than these spheres. investigations, we employ genetic algorithm (GA) derive correlations. It found GA approach can correlate Nu quite well two new describe convective RPBSP. Comparisons between developed present work other also conducted. Lastly, effects sphericity porosity included correlation when considering physics investigation provides thoughts for dealing beds as newly construction mathematical model cooling design equipment.
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