简述汽车空调出风口气流均匀性对冷却性能的影响.pdf

机 床 与 液 压 Jun．2014 HydromechatronicsEngineering V01．42 No．12 DOI：10．3969／j．issn．1001-3881．2014．12．004 Influenceofairflow uniformity overtheductoutletof l ● - ● l ● ·● l ‘ tlit vehicle air-conaition on coolingpertorm ance Chen．guangLAI 一 ，Kai．pingWEN ，ChaoMAN CollegeofVehicleEngineering，ChongqingUniversityofTechnology，Chongqing400054，China； 。InstituteofFluidScience，TohokuUniversity，Sendai980-8577，Japan Abstract：CFD (computationalfluiddynamics)methodisappliedtoresearchtheinfluenceofair- flow unif0rmityovertheductoutletofvehicleair-conditiononcoolingperformance．Considering thesolarradiationandbodyheatdissipation，thecoolingprocessesoftwoairflowswiththesame fluxanddifferentuniformi~aresimulated．TheresultshowsthattheairflowwithhigherunIform isbeneficialtocoolingperformanceandthermalcomfortbycomparingthecoolingtime，flow field andtemperaturedistribution．Thereasonsarealsoanalyzedusingthesubmergedturbulentjet theo~． Keywords：Vehicleair-condition，Coolingperformance，Airflow un_formity，Turbulentjet，Ther- malcomfort PENGXinl1j，thecontributionoftheair—condition 1．Introduction compressortothepowerdissipationaccountsofr5％ ～ 20％ oftotaldissipation，hence somenew tech— Energyconservation and environmentprotection niquessuchaswindrefrigerationandwasteheatcool— arethebasicsubiectsforthedevelopmentofvehicle． ingareperfomr ed to improveit．From LU Zubin et Theair．．conditionwhichconsumesthepowerofvehi．． a1．[2]andYANGJuan[3]，itcanbeseenthatthe cleisan