基本信息
| 标准名称： | 轿车制动器台架试验方法 |
| 中标分类： |
车辆 >>
汽车底盘与车身 >>
制动系统 |
| 替代情况： | 转化为QC/T 564-1999 |
| 发布日期： | |
| 实施日期： | 1992-10-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
适用范围
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前言
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目录
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引用标准
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所属分类： 车辆 汽车底盘与车身 制动系统
【英文标准名称】:StandardGuideforDescribingtheFunctionalityofaGround-WaterModelingCode
【原文标准名称】:描述地下水成型准则功能的标准指南
【标准号】:ASTMD6033-1996(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.21
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:codeselection;ground-water;ground-watermodeling;modeltypes;softwarefunctionality;Classification;Computermodel;Functionality;Ground-watermodel;Software--groundwateranalysisapplications
【摘要】:Ground-watermodelinghasbecomeanimportantmethodologyinsupportoftheplanninganddecision-makingprocessesinvolvedinground-watermanagement.Ground-watermodelsprovideananalyticalframeworkforobtaininganunderstandingofthemechanismsandcontrolsofground-watersystemsandtheprocessesthatinfluencetheirquality,especiallythosecausedbyhumaninterventioninsuchsystems.Increasingly,modelsareanintegralpartofwaterresourcesassessment,protectionandrestorationstudies,andprovideessentialandcost-effectivesupportforplanningandscreeningofalternativepolicies,regulations,andengineeringdesignsaffectinggroundwater.Therearemanydifferentground-watermodelingcodesavailable,eachwiththeirowncapabilities,operationalcharacteristics,andlimitations.Ifmodelingisconsideredforaproject,itisimportanttodetermineifaparticularcodeisappropriateforthatproject,orifacodeexiststhatcanperformthesimulationsrequiredintheproject.Inpractice,itisoftendifficulttodeterminethecapabilities,operationalcharacteristics,andlimitationsofaparticularground-watermodelingcodefromthedocumentation,orevenimpossiblewithoutactualrunningthecodeforsituationsrelevanttotheprojectforwhichacodeistobeselectedduetoincompleteness,poororganization,orincorrectnessofacode''sdocumentation.Systematicandcomprehensivedescriptionofacode''sfeaturesbasedonaninformativeclassificationprovidesthenecessarybasisforefficientselectionofaground-watermodelingcodeforaparticularprojectorforthedeterminationthatnosuchcodeexists.Thisguideisintendedtoencouragecorrectness,consistency,andcompletenessinthedescriptionofthefunctions,capabilities,andlimitationsofanexistingground-watermodelingcodethroughtheformulationofacodeclassificationsystemandthepresentationofcodedescriptionguidelines.1.1Thisguidepresentsasystematicapproachtotheclassificationanddescriptionofcomputercodesusedinground-watermodeling.Duetothecomplexnatureoffluidflowandbioticandchemicaltransportinthesubsurface,manydifferenttypesofground-watermodelingcodesexist,eachhavingspecificcapabilitiesandlimitations.Determiningthemostappropriatecodeforaparticularapplicationrequiresathoroughanalysisoftheproblemathandandtherequiredandavailableresources,aswellasadetaileddescriptionofthefunctionalityofpotentiallyapplicablecodes.1.2Typically,ground-watermodelingcodesarenonparameterizedmathematicaldescriptionsofthecausalrelationshipsamongselectedcomponentsoftheaqueoussubsurfaceandthechemicalandbiologicalprocessestakingplaceinthesesystems.Manyofthesecodesfocusonthepresenceandmovementofwater,dissolvedchemicalspeciesandbiota,eitherunderfullyorpartiallysaturatedconditions,oracombinationoftheseconditions.Othercodeshandlethejointmovementofwaterandotherfluids,eitherasagasoranonaqueousphaseliquid,orboth,andthecomplexphasetransfersthatmighttakeplacebetweenthem.Somecodeshandleinteractionsbetweentheaqueoussubsurface(forexample,aground-watersystem)andothercomponentsofthehydrologicsystemorwithnonaqueouscomponentsoftheenvironment.1.3Theclassificationprotocolisbasedonananalysisofthemajorfunctiongroupspresentinground-watermodelingcodes.Additionalcodefunctionsandfeaturesmaybeidentifiedindeterminingthefunctionalityofacode.Acompletedescriptionofacode''sfunctionalitycontainsthedetailsnecessarytounderstandthecapabilitiesandpotentialuseofaground-watermodelingcode.Tablesareprovidedwithexplanationsandexamplesoffunctionsandfunctiongroupsforselectedtypesofcodes.Consistentuseofthedesc......
【中国标准分类号】:P12
【国际标准分类号】:13_060_10
【页数】:10P.;A4
【正文语种】:英语