A-1AirpakVentilationModelingSoftware通风通风(tngfng)设计软件设计软件Simplifiesthedesignandanalysisofventilationsystems简化通风系统的设计(shj)和分析Accurate,quick,andeasy-to-usedesigntoolthatempowersdesignersandprofessionals,withoutextensivebackgroundsincomputerapplications,toutilizethepowersofadvancedcomputationalfluiddynamics(CFD)tools精确，快速，易学，设计(shj)师不需要有很深的计算机应用背景，就能够使用这一CFD工具Optimizeyourdesignsorpinpointproblemsbasedonaccuratepredictionsofairflowpatterns,thermalconditions,comfortconditions,and/orcontaminationcontroleffectiveness优化设计(shj)，查明问题Obtain the most accurate solution in the shortest amount of time and in the easiest manner possible在最短的时间内，用最简单的方式在最短的时间内，用最简单的方式(fngsh)，获得最精确的结，获得最精确的结果果第1页/共32页第一页，共33页。A-2TargetedAirflowApplications应用应用(yngyng)Commercial/residentialventilation住宅通风Fumehooddesign排烟罩设计Telecommunicationrooms电讯室设计Cleanrooms净化间设计Contaminationcontrol污染控制Industrialairconditioning工业空调Industrialventilation工业通风Industrialhygiene工业卫生(wishng)Occupationalhealthandsafety职业健康和保险Externalbuildingflows建筑外部绕流Transportationventilation运输通风Mine ventilation 矿井通风矿井通风Fire and smoke management 烟火管理烟火管理Educational facilities 教育设施教育设施Medical facilities 医疗设施医疗设施Animal and plant environments动植物动植物生存环境生存环境Kitchen ventilation 厨房通风厨房通风Restaurants and bars 餐厅和酒吧餐厅和酒吧Power plant ventilation 电站通风电站通风Enclosed vehicular facilities 封闭车辆封闭车辆(chling)设施设施Stadiums, arenas, and places of assembly 体育场，竞技场，总装厂房体育场，竞技场，总装厂房第2页/共32页第二页，共33页。A-3AirpakMeetsDemandsofHVACIndustry面向面向(minxin)HVAC行业行业EaseofUse使用简便mouse-drivengraphicaluser-interfaceobject-orientedmodelbuildingautomatedmeshingwell-chosendefaultparameterspowerfulpost-processingFocusedonHVACapplications面向(minxin)HVAC应用buildingblocksincludefans,vents,people,hoods,filterspost-processingofthermalcomfortandcontaminationparametersAccurateandFast准确，快速body-fittedmeshcapturesrealgeometryforsimulationsbasedonwell-proven,efficient,androbustunstructuredsolverparallelcomputingcutsturnaroundtimeAirpak streamlines the process of modeling airflow第3页/共32页第三页，共33页。A-4AirpakGraphicalUserInterface第4页/共32页第四页，共33页。A-5AirpakBuildingBlocksObject-basedmodelbuildingwithpre-definedobjects用预先定义好的物体建模blocksofvariousshapesandsizeshumanformsfanshoodswalls/partitionsopeningssourcesresistancesLibraryfunctionsavailabletocreateandstoregroupsofobjects用库函数可以产生(chnshng)和存储物体组prismsellipsoidspolygonscylindersSeated & standing peoplehoods第5页/共32页第五页，共33页。A-6AirpakModelingFeaturesSteadyortransientanalysis稳态，瞬态分析Laminarorturbulentflow层流，湍流Transportofmultiplespecies多种组分Forced,natural,ormixedconvectionheattransfer强迫，自然，混合对流(duli)换热Surface-to-surfaceradiation辐射Conductioninsolids固体传导Sourcesforvelocity,energy,&species速度，能量，组分源第6页/共32页第六页，共33页。A-7AirpakAutomatedMeshingCapabilities自动化网格自动化网格(wn)能力能力Fully-automaticunstructuredmeshinghandleseasyaswellascomplexgeometries完全自动非结构化网格生成(shnchn)True-geometryrepresentation(nostair-steppedapproximations)真实几何Hexahedra, tetrahedra, pentahedra, and mixed element mesh types第7页/共32页第七页，共33页。A-8Airpak Unstructured Meshing非结构化网格非结构化网格(wn )Use fewer cells than what a structured mesh requires for complex problems Unstructured tetrahedral mesh of a collegiate ice rink快餐(kui cn)吧进气孔(qkng)冰记分牌灯光看台AHU第8页/共32页第八页，共33页。A-9AirpakReportingandDisplayOptions后处理后处理Contourlevels等值面Velocityvectors速度向量(xingling)Particletraces粒子追踪Animations动画Pointreporting点报告Variationplots变量图Summaryreports总结报告DisplayofIAQ&thermalcomfortpost-processingparameters:IAQ和舒适度后处理参数：relativehumidity相对湿度PMV&PPDmeanradianttemperature平均辐射温度meanageofair平均空气滞留时间第9页/共32页第九页，共33页。A-10ThermalComfortPost-Processing舒适度后处理舒适度后处理ISO7730usedtocalculatePredictedMeanVote(PMV)andPredictedPercentageDissatisfied(PPD)throughoutthemodeledroomExplore what-if cases by overriding computed values for RH, MRT, air temperature, or air velocitySelect metabolic rate and clothing values from tablesReport min, max, average, and standard deviation第10页/共32页第十页，共33页。A-11ParametricModels参数参数(cnsh)化建模化建模Parametriccapabilitiesallowyoutoworkmoreefficientlywithautomatedcomputationsofnumerouscases参数(cnsh)化建模能够提高您的工作效率Canspecifyparametersforgeometry,propertiesand/orboundaryconditions参数(cnsh)可以是几何，特性，边界条件Userchoosestrialsfromavailablematrix用户根据不同的参数(cnsh)选择计算工况第11页/共32页第十一页，共33页。A-12SpreadsheetModelAdjustmentsEasymodificationofallmodelparametersandboundaryconditionsusingspreadsheet用电子表格可以很容易修改模型参数和边界条件Import/exportcapabilitywithtab-separatedformat可以进行( jnxng)输入/输出第12页/共32页第十二页，共33页。A-13AnimationsBringtheFlowtoLifeDisplayanimatedparticletracesDisplayanimationoftransientprocessesforanypost-processingobjectUseaseparatescreencaptureutilitytosaveAirpakanimationsoranyotherdisplayactivityinAVIformat(pconly)ComposeindividualframesforanimatedGIFformat(unixorpcwebbrowsers)AVI animation of particle traces from supply diffuser in a partitioned office第13页/共32页第十三页，共33页。A-14Examples第14页/共32页第十四页，共33页。A-15CoolingVentilation:NegativelyBuoyantJetPredictingcoldairdistributionatlowventilationrates,designersvisualizejetdeflectionanddetermineimpactonmixingandthermalcomfortParticle Traces Colored by Velocity MagnitudeContours of PMV第15页/共32页第十五页，共33页。A-16Ventilation of a Partitioned OfficeParticle traces colored by mean age of air show sharp deflection of cold air as it exits elevated side-wall supply diffuserContours of mean age of air show difference in air freshness including stale stagnant regions in corners and behind partitionDetermine the best ventilation system design for the planned use of the facility第16页/共32页第十六页，共33页。A-17IAQ and Comfort in a Conference RoomFlow patterns within the room at table level contain several low-velocity swirling eddies as shown by the velocity vectors Circular ceiling diffuser第17页/共32页第十七页，共33页。A-18IAQ and Comfort in a Conference RoomContours of mean age of air show that meeting participants are seated where the air is generally the least freshContours of PMV show cold air from supply cools the perimeter regions of the room while the occupied space is relatively more comfortable第18页/共32页第十八页，共33页。A-19Laboratory Ventilation: Local-Exhaust SystemUse Airpak to determine:Effectiveness of local-exhaust systemBreathing zone integrityInteraction of lab ventilation with local-exhaust system第19页/共32页第十九页，共33页。A-20Laboratory Ventilation: Local-Exhaust SystemLaboratory room ventilation and obstruction of the worker himself may reduce the efficacy of the local-exhaust system第20页/共32页第二十页，共33页。A-21Industrial Ventilation: Paint Spray BoothOverhead supply ventilation with central floor exhaust designed to maintain safe and healthy conditionsPaint fume concentration levels and velocity vectors第21页/共32页第二十一页，共33页。A-22Industrial Ventilation: Paint Spray BoothUse Airpak to:Assess whether the worker is safe without a maskAssess margins to fire hazard conditionsDetermine waiting period required before safe entry by unprotected workers第22页/共32页第二十二页，共33页。A-23Occupational Safety: VOC Emissions from a CopierParticle traces of copier VOC emissions colored by concentration level fall behind the copier and then circulate through the room before exiting the exhaustCopier room geometry and computational mesh第23页/共32页第二十三页，共33页。A-24Building Air Intake and Exhaust DesignPlume particle traces colored by concentration level show the dilution and trajectory of the contaminant plumes while surfaces are colored by surface pressure magnitude第24页/共32页第二十四页，共33页。A-25Building Air Intake and Exhaust DesignVisualize complex airflow patterns that develop between buildings and use that information when determining where to place intakes and exhausts第25页/共32页第二十五页，共33页。A-26Airpak 2.0的新特点(tdin)第26页/共32页第二十六页，共33页。A-27 MCAD 输入- IGES文件（包括面和线）能够直接(zhji)从CAD文件输入到Airpak- 不必要的面可以进行修剪、填充或删除- Airpak的模型可以直接(zhji)从面生成第27页/共32页第二十七页，共33页。A-28 Modeling（建模）- 增加了一种(y zhn)新的radiation 模型，discrete ordinates 无须求角系数，但求解时间长- 增加了indoor zero-equation model 和RNG k- model- 理想气体方程- 开口（opening）建模提供了剖面情况- 后处理切面参数可以保存并重新使用- 提高了薄板导热模型能力。目前的限制是薄板不能接触network blocks，不能采用并行计算- 求解时提供了节点内部插值功能。不同网格划分也可进行restart- 水蒸气边界条件可以通过水气含量或相对湿度描述- 污染边界条件可以通过ppmv 或浓度描述- 薄板壁可行第28页/共32页第二十八页，共33页。A-29 Design Capabilities （设计能力）- 参数化功能的提高，可以根据licenses数，用于多个jobs同时分析- 总结报告的格式可以在求解(qi ji)前预先定义，Airpak将在求解(qi ji)结束时自动完成报告 Postprocessing （后处理）- 单个点上变量的情况可以用鼠标拖动来显示- 单个点对象可以作为监视点、后处理对象和点报告- 后处理结果可以直接存成MPEG ,AVI, GIFs & FLI movies第29页/共32页第二十九页，共33页。A-30 Macros: 大气大气(dq)边界层边界层 (atmospheric) 太阳幅射太阳幅射 (solar flux) 散流器散流器 (diffuser) Nozzle Slot Valve Displacement Square ceiling Round ceiling Vortex ceiling Grille第30页/共32页第三十页，共33页。A-31ImpracticaltomodeldetailsofairinletdiffusersMacrosusesimplifieddiffuserboundaryconditionsbasedonASHRAERP-1009researchthatevaluatedmomentumandboxmethodsforsimplifieddiffuserBCs第31页/共32页第三十一页，共33页。A-32感谢您的观赏(gunshng)！第32页/共32页第三十二页，共33页。内容(nirng)总结A-1。精确，快速，易学，设计师不需要有很深的计算机应用背景，就能够使用这一CFD工具。强迫，自然，混合对流(duli)换热。速度，能量，组分源。参数可以是几何，特性，边界条件。感谢您的观赏第三十三页，共33页。