Comparison of veracity and application of different CFD turbulence models for refrigerated transport  

作　　者：Jia-Wei Han Wen-Ying Zhu Zeng-Tao Ji 

机构地区：[1]National Engineering Research Center for Information Technology in Agriculture,Beijing 100097,China [2]National Engineering Laboratory for Agri-product Quality Traceability,Beijing Academy of Agricultural and Forestry Sciences,Beijing 100097,China

出　　处：《Artificial Intelligence in Agriculture》2019年第3期11-17,共7页农业人工智能（英文）

基　　金：This work was supported by National Key Technology R&D Program of China(No.2018YFD0701000 and 2018YFD0701003);Research and Development Projects in Key Areas of Guangdong Province,China(No.2019B020225001);National Engineering Laboratory for Agri-product Quality Traceability,Beijing Academy of Agricultural and Forestry Sciences(No.PT2019-26);Opening Foundation of National Engineering Laboratory for Agri-product Quality Traceability,Beijing Technology&Business University(No.AQT-2019-YB3).

摘　　要：The objective of this study was to establish a comprehensively verified 3D CFD model of this experimental platformto simulate the airflowand heat transfer at different unsteady turbulence model(standardκ-ε,RNGκ-ε,Realizableκ-ε,standardκ-ω,SSTκ-ωand RSM),and to predict the temporal-spatial temperature and velocity variations during cooling.Good agreement between model prediction and measured data was obtained.The root-mean-square error(RMSE)were 1.049℃,1.033℃,1.039℃,1.037℃,1.014℃ and 1.064℃ for standardκ-ε,RNGκ-ε,Realizableκ-ε,standardκ-ω,SSTκ-ωand RSM,respectively.There were no significant differences in different turbulencemodels on simulating the temperature distribution,and itwas similar to solve the energy equation on different turbulencemodelswith two-equation eddy viscosity.This study also revealed that the simulation values of high Reynolds numbers turbulence model(e.g.standardκ-ε,RNGκ-ε,Realizableκ-εand RSM)were slightly lower thanmeasured values near the plane wall.After comparing the accuracy of six two-equation turbulencemodels,the SSTκ-ωmodel showsmore accurate predictions by a comparison of the experimental and simulated results.This research provided reliablemethod for better understanding and selecting CFD turbulence models to refrigerated transport of fresh fruit.

关 键 词：Cold chain Computational fluid dynamics(CFD) Numerical analysis COOLING Turbulence model 

分 类 号：O35[理学—流体力学]