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基于CFD方法的非能动余热排出系统数值模拟.docx

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基于CFD方法的非能动余热排出系统数值模拟 Abstract Theeffectivemanagementofwasteheatinindustrialprocessesiscriticalforimprovingenergyefficiencyandreducinggreenhousegasemissions.Tobetterunderstandthebehaviorofwasteheatdischargesystemsandoptimizetheirperformance,computationalfluiddynamics(CFD)simulationshavebeenused.ThisstudypresentsareviewofCFD-basednumericalsimulationsofnon-energywasteheatdischargesystems.Theoverviewincludesadescriptionofthenecessaryphysicsandmodelingtechniques,thesimulationresults,andtheapplicationsofthesesimulationsinresearchandindustrialpractice. Introduction Themostcommonmethodofwasteheatdischargeinindustrialprocessesisbydirectradiationtotheatmosphereorcoolingwater.However,duetoincreasingenergycostsandenvironmentalconcerns,ithasbecomeessentialtooptimizewasteheatrecoverysystems.Byreducingthiswaste,therecanbesignificantenergysavings,reducedenvironmentalimpact,andimprovedsustainabilitypractices. CFDisanumericalmethodusedtosimulatefluidflowandheattransferincomplexgeometries.CFDsimulationscanprovidedetailedinformationonthebehaviorofnon-energywasteheatdischargesystemsandthethermalperformanceofheatexchangersandcoolingsystems.TheuseofCFDsimulationshasbeenprovedbeneficialinanalyzingtheeffectivenessofwasteheatrecoverysystemsandvalidatingperformancemodels. ThepresentstudyaimstoprovideacomprehensiveoverviewoftheapplicationsofCFDsimulationsinnon-energywasteheatdischargesystems,includingtheirmodelingtechniques,simulationresults,andapplications. Simulationtechniques OneofthesignificantbenefitsofCFDsimulationsisthattheycanbetailoredtospecificsystemsandgeometries.Itisessentialtoconsiderthephysicalandthermalparametersthatgovernthebehaviorofthewasteheatdischargesystemstosimulatethemaccurately.Themodelingparameterscanincludethetemperature,flowrate,pressure,andgeometry. Differentmodelscanbeusedtosimulatetheflowoffluidsinawasteheatdischargesystem,includingtheturbulentflowandlaminarflow.TheselectionoftheappropriatemodeldependsontheReynoldsnumberoftheflow,thegeometricalcomplexity,andthere