文章编号：0258-0926(2023)02-0098-06;DOI:10.13832/j.jnpe.2023.02.0098液态铅铋合金湍流普朗特数及RANS模型优选邓诗雨1，卢涛1*，邓坚2，张喜林2，朱大欢21.北京化工大学机电工程学院，北京，100029；2.中国核动力研究设计院核反应堆系统设计技术重点实验室，成都，610213摘要：工程上常采用RANS湍流模型进行热工水力相关的数值模拟，然而液态铅铋合金（LBE）具有独特的热物性，常规湍流普朗特数模型和RANS湍流模型对其流动与传热模拟的适用性有待研究。为更准确地描述绕丝燃料组件内LBE的流动与换热过程，本文基于大涡模拟对湍流普朗特数模型和RANS湍流模型进行优选。首先，采用四种湍流普朗特数模型对绕丝燃料组件内LBE的流动与传热过程进行大涡模拟，对比分析实验数据和模拟结果并进行模型优选。基于优选的湍流普朗特数模型，评价RANS湍流模型对LBE数值模拟的适用性和准确性。结果表明，Cheng湍流普朗特数模型和SSTk-ω模型对LBE流动与传热模拟的准确性和适用性最高。关键词：液态铅铋合金（LBE）；大涡模拟；湍流普朗特数模型；RANS湍流模型；绕丝燃料组件中图分类号：TL331；TK124文献标志码：AOptimizationofTurbulentPrandtlNumbersandRANSModelsforLiquidLead-bismuthEutecticDengShiyu1,LuTao1*,DengJian2,ZhangXilin2,ZhuDahuan21.SchoolofMechanicalandElectricalEngineering,BeijingUniversityofChemicalTechnology,Beijing,100029,China;2.ScienceandTechnologyonReactorSystemDesignTechnologyLaboratory,NuclearPowerInstituteofChina,Chengdu,610213,ChinaAbstract:Intheengineeringfield,theRANSturbulencemodelsareoftenusedforthermalandhydraulicnumericalsimulation.However,theliquidlead-bismutheutectic(LBE)hasuniquethermophysicalproperties,andtheapplicabilityofconventionalturbulentPrandtlnumbermodelsandRANSturbulencemodelstoitsflowandheattransfersimulationneedstobestudied.InordertomoreaccuratelydescribetheflowandheattransferprocessofLBEinwire-wrappedfuelassembly,theturbulentPrandtlnumbermodelsandRANSturbulencemodelsareoptimizedinthispaperbasedonthelargeeddysimulation.First,fourdifferentturbulentPrandtlnumbermodelsareusedtocarryoutthelargeeddysimulationoftheflowandheattransferprocessofLBEinwire-wrappedfuelassembly,andtheexperimentaldataandsimulationresultsarecompare...
