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Simulating a Gate Valve

John Dunec, Ph.D. VP of Sales, NW USA

Welcome to the Lunch-Time Tutorials!

•Solve One Problem Using COMSOL Multiphysics

•This Tutorial: Flow Through a Closing Gate Valve

•30-35 minutes duration

•Short Q&A at end

Upcoming Tutorials:

•Positive Displacement Pump

•One-Way Flapper Valve

www.comsol.com/events

Individual Physics you Learned in School

Individual equation sets … Applied to simple,

(and sometimes not-so-simple) single-physics problems

In Reality – Multiple Sets of Physics Interact

Typically bi-directional nonlinear coupling between multiple physical processes

Multiphysics: Multiple Interacting Phenomena

Could be simple:

• Heat

•Convected by Flow

Could be complex:

•Flow

–Navier-Stokes in tubes

–Porous flow in plug

•Mass Transport

–Three chemicals: A,B,C

–Reacting: A+2B → C

•Heat Transfer

–Exothermic reaction

–Reaction rate temperature dependant

COMSOL Multiphysics Solves These!

•Multiphysics – Everything can link to everything.

•Flexible – You can model just about anything.

•Usable – You can keep your sanity doing it.

•Extensible – If its not specifically there…add it!

Trusted by 80,000+ Users Worldwide

Anywhere you can type a number … you can type an equation

• Or an interpolation function …

• And it can depend on anything known in your problem

• Example: Concentration-dependant viscosity:

Simulating a Closing Gate Valve

•Change in Topology makes ALE Moving Mesh Approach Difficult

•Use Nonlinear Material definition instead

•Flow Rate vs Percent Open?

•Where does feeder stream go?

Problem Definition, Flow Boundary Condn’s

•Gate valve redirects flow

•Feeder line injects fluid stream

Standard 4.5” Steel Pipe: OD = 4.5” ID = 4.03”

Gate Valve Position in Pipe

COMSOL Products Used–This Tutorial

Everything in this example can be done with our base package: COMSOL Multiphysics

Tutorial Roadmap

First: Setup and Solve Flow

• Choose Physics

• Import Geometry Sequence

• Choose Materials (Water)

• Set Inlet & Outlet B.C.’s

• Mesh –Clean Geometry

• Remesh

• Solve

Next: Model Valve Itself

Mesh Challenge: Tangent Joint of Y

Very Narrow Triangle – Mesher Objects

Solution: Virtual Geometry Operation

• Join Problematic Surfaces

• Both Inside Pipe and Outside

免责声明：

本页面/内容部分素材来源于互联网公开信息，旨在传递更多信息，不代表本平台立场。

版权归原作者或机构所有，如涉及侵权，请通过平台联系我们，我们将在核实后第一时间处理。

本平台对转载内容的真实性、准确性不作任何保证，用户需自行判断并承担使用风险。

几百种材料的应力应变拉伸曲线图集_后半部分

WA.1816061-T6aluminumalloysheet,stress-straincurvesatroomandelevatedtemperaturesTestedatlowtemperature.Testdirection:longitudinal(top);transverse(bottom).Sheetthickness:2.54mm(0.100in.).Composition:Al-1Mg-0.6Si-0.25Cu-0.20Cr.UNSA96061F.R.Schwartzbergetal,CryogenicMaterialsDataHandbook,ML-TDR-64-280,Aug1964,Suppl.1,Feb1965.AspublishedinAerospaceStructuralMetalsHandbook,Vol3,Code3206,CINDAS/PurdueUniversity,1995,p9WA.1826061-T651aluminumalloyplate,effectofcryogenictemperaturesontensilepropertiesTestedto-269℃(-452°F).Platethickness:31.75mm(1%in.).Composition:Al-1Mg-0.65Si-0.25Cu-0.20Cr.UNSA96061Source:J.G.Kaufman,K.O.Bogardus,andE.T.Wanderer,TensilePropertiesandNotchToughnessofAluminumAlloysat-452FinLiquidHe,Adv.CryogenicEng.,Vol13,1968,p294.AspublishedinAerospaceStructuralMetalsHandbook,Vol3,Code3206,CINDAS/PurdueUniversity,1995,p9WA.1836061-Oaluminumalloy,effectofexposureandtesttemperatureontensilepropertiesExposureupto10,000h.Composition:Al-1Mg-0.6Si-0.25Cu-0.20Cr.UNSA96061Source:“MechanicalPropertiesatVariousTemperaturesof6061-0,”Datasheet,AlcoaResearchLaboratories,1Feb1956.AspublishedinAerospaceStructuralMetalsHandbook,Vol3,Code3206,CINDAS/PurdueUniversity,1995,p9WA.1846061-T4aluminumalloysheet,effectofexposureandtesttemperatureontensilepropertiesComposition:Al-1Mg-0.6Si-0.25Cu-0.20Cr.UNSA96061Source:“MechanicalPropertiesatVariousTemperaturesof6061-T4and6062-T4,”Datasheet,AlcoaResearchLaboratories,23Feb1956.AspublishedinAerospaceStructuralMetalsHandbook,Vol3,Code3206,CINDAS/PurdueUniversity,1995,p10WA.1856061-T6aluminumalloy,effectofexposureandtesttemperatureontensilepropertiesComposition:Al-1Mg-0.6Si-0.25Cu-0.20Cr.UNSA96061Source:"MechanicalPropertiesatVariousTemperaturesof6061-T6Products,”Datatable,AlcoaResearchLaboratories,6Dec1960.AspublishedinAerospaceStructuralMetalsHandbook,Vol3,Code3206,CINDAS/PurdueUniversity,1995,p10Temperature,FWA.1866061-T6aluminumalloysheet,effectoftesttemperatureonstresstoproducevariousamountsofsmallplasticstrainintensionSheetthickness:3.17mm(1/8in.).RT,roomtemperature.Composition:Al-1Mg-0.6Si-0.25Cu-0.20Cr.UNSA96061Source:R.E.MaringerandM.M.Cho,"StabilityofStructuralMaterialsforSpaceCraftApplication,"NASACR97844,NationalAeronauticsandSpaceAdministration,April1968.AspublishedinAerospaceStructuralMetalsHandbook,Vol3,Code3206,CINDAS/PurdueUniversity,1995,p10WA.1876061-T6aluminumalloycladsheet,compressivestress-straincurvesTestedat93,204,and316℃(200,400,and600F)inlongtransversedirection.Composition:Al-1Mg-0.6Si-0.25Cu-0.20Cr.UNSA96061Struc(Source)t:u(M)r(e)e(t)s(a)l,lM(ic)ILM-H(a)tDBK(erials)-5B(an),F(d)SC(E)l15(em)e00(nts),Sept(for)19(A)71(er)opsp(ace)ublish(Vehi)e(cl)d(e)inAerospaceStructuralMetalsHandbook,Vol3,Code3206,CINDAS/PurdueUniversity,1995,p10WA.1886061-T6aluminumalloysheet,compressivestress-straincurvesTestedat149and260℃(300and500F)inlongtransversedirection.Composition:Al-1Mg-0.6Si-0.25Cu-0.20Cr.UNSA96061Source:MetallicMaterialsandElementsforAerospaceVehicleStructures,MIL-HDBK-5B,FSC1500,Sept1971.AspublishedinAerospaceStructuralMetalsHandbook,Vol3,Code3206,CINDAS/PurdueUniversity,1995,p11WA.1896061-T6aluminumalloysheet,effectoflowtemperatureonshearstrengthTestdirection:Longitudinalandtransverse.Sheetthick-ness:2.54mm(0.100in.).Composition:Al-1.0Mg-0.6Si-0.25Cu-0.20Cr.UNSA96061F.RSchwartzbergetal,CryogenicMaterialsDataHandbook,MIL-TDR-64-280,Aug1964,andSuppl.No.1,Feb1965.AspublishedinAerospaceStructuralMetalsHandbook,Vol3,Code3206,CINDAS/PurdueUniversity,1995,p11WA.1906061-0aluminumalloyrod,tensilestress-straincurvesTheupperrowofstrainvaluesontheabscissaappliestoboththecompletetruecurveandthecompletenominalcurve.Thelowerrowofstrainvaluesappliestotheexpandedportionofthecurves;thisexpandedportionisessentiallyidenticalforboththetrueandnominalcurves.YS,yieldstrength.Testspecimendiam,12.7mm(1/2in.).Gagelength:203.2mm(8in.).Nominaltensilestrength,123MPa(17.8ksi).Truetensilestrength,143MPa(20.7ksi).Nominalyieldstrength(0.2%offset),43MPa(6.2ksi).Elongation(in50.8mm,or2in.),23.4%.Reductionofarea,75%.Truestrainatmaximumload,18.2%.Alog-logplotofthestress-straincurvewouldyieldaslopeof(n)of0.22intheareaofuniformplasticdeformation.UNSA96061Source:Alcoa,AluminumResearchLaboratory,NewKensington,PA,July1954Strain,0.001in./in.WA.1916061-T4aluminumalloyrod,tensilestress-straincurvesTheupperrowofstrainvaluesontheabscissaappliestoboththecompletetruecurveandthecompletenominalcurve.Thelowerrowofstrainvaluesappliestotheexpandedportionofthecurves;thisexpandedportionisessentiallyidenticalforboththetrueandnominalcurves.YS,yieldstrength.Testspecimendiam,12.7mm(1/2in.).Gagelength:203.2mm(8in.).Nominaltensilestrength,285MPa(41.4ksi).Truetensilestrength,307MPa(44:5ksi).Nominalyieldstrength(0.2%offset),190MPa(27.6ksi).Elongation(in50.8mm,or2in.),17.2%.Reductionofarea,54%.Truestrainatmaximumload,7.7%.Alog-logplotofthestress-straincurvewouldyieldaslopeof(n)of0.11intheareaofuniformplasticdeformation.UNSA96061Source:Alcoa,AluminumResearchLaboratory,NewKensington,PA,July1954WA.1926061-T6aluminumalloyrod,tensilestress-straincurvesTheupperrowofstrainvaluesontheabscissaappliestoboththecompletetruecurveandthecompletenominalcurve.Thelowerrowofstrainvaluesappliestotheexpandedportionofthecurves;thisexpandedportionisessentiallyidenticalforboththetrueandnominalcurves.YS,yieldstrength.Testspecimendiam,12.7mm(1/2in.).Gagelength:203.2mm(8in.).Nominaltensilestrength,307MPa(44.5ksi).Truetensilestrength,334MPa(48.5ksi).Nominalyieldstrength(0.2%offset),266MPa(38.6ksi).Elongation(in50.8mm,or2in.),10.8%.Reductionofarea,49%.Truestrainatmaximumload,8.6%.Alog-logplotofthestress-straincurvewouldyieldaslopeof(n)of0.13intheareaofuniformplasticdeformation.UNSA96061Source:Alcoa,AluminumResearchLaboratory,NewKensington,PA,July1954WA.1936061-T6aluminumalloy,allproducts,effectofexposureatelevatedtemperatureonroomtemperaturetensileultimatestrengthExposureupto10,000h,asindicated.Allproducts.UNSA96061Source:MIL-HDBK-5H,1Dec1998,p3-264WA.1946061-T6aluminumalloysheet,tensilestress-straincurvesTestedatroomtemperature.Typicalforsheetthickness≤6.325mm(≤0.249in.).Ramberg-Osgoodparameter,n(longitudinal,tension)=50;n(longtransverse,tension)=21.UNSA96061Source:MIL-HDBK-5H,1Dec1998,p3-267WA.1956061-T6aluminumalloysheet,tensilestress-straincurvesTestedat260℃(500°F).Testdirection:longitudinal.Typicalforsheetthickness≤3.175mm(≤0.125in.).Ramberg-Osgoodparameter,n(2-5hexposure)=13;n(10hexposure)=13);n(100hexposure)=13.UNSA96061Source:MIL-HDBK-5H,1Dec1998,p3-269WA.1966061-T6aluminumalloysheet,compressivestress-strainandcompressivetangentmoduluscurvesTestedatroomtemperature.Testdirection:L,longitudi-nal;LT,longtransverse.Typicalforsheetthickness≤6.325mm(≤0.249in.).Ramberg-Osgoodparameter,n(L,compression)=19;n(LT,compression)=21.UNSA96061Source:MIL-HDBK-5H,1Dec1998,p3-269WA.1976061-T6aluminumalloysheet,tensileandcompressivestress-strainandcompressivetangentmoduluscurvesTestedatroomtemperature.Testdirection:L,longitudi-nal.Typical.Ramberg-Osgoodparameter,n(L,tension)=50;n(L,compression)=18.UNSA96061Source:MIL-HDBK-5H,1Dec1998,p3-270WA.1986061-T6aluminumalloyextrusion,tensilestress-straincurvesTestedatroomtemperature.Typicalforallthicknesses.Ramberg-Osgoodparameter,n(longitudinal,tension)=34;n(longtransverse,tension)=29.UNSA96061Source:MIL-HDBK-5H,1Dec1998,p3-271WA.1996061-T6aluminumalloyextrusion,compressivestress-strainandcompressivetangentmoduluscurvesTestedatroomtemperature.Typicalforallthicknesses.Ramberg-Osgoodparameter,n(longitudinal,compres-sion)=38;n(longtransverse,compression)=28.UNSA96061Source:MIL-HDBK-5H,1Dec1998,p3-271WA.2006061-T6aluminumalloysheet,tensilestress-straincurve(fullrange)Testedatroomtemperature.Testdirection:longitudinal.Typical.UNSA96061Source:MIL-HDBK-5H,1Dec1998.p3-273WA.2016061-T62aluminumalloyextrusion,tensilestress-straincurves(fullrange)Testedatroomtemperature.Typicalforallthicknesses.UNSA96061Source:MIL-HDBK-5H,1Dec1998,p3-274WA.2026061-T651X,aluminumalloyextrusion,tensileandcompressivestress-strainandcompressivetangentmoduluscurvesTestedatroomtemperature.Testdirection:L,longitudi-nal;LT,longtransverse.Typicalforextrusionthickness≤12.67mm(≤0.499in.).Ramberg-Osgoodparameter,n(L,tension)=40;n(LT,tension)=19;n(L,compres-sion)=15;n(LT,compression)=14.UNSA96061Source:MIL-HDBK-5H,1Dec1998WA.2036061-T651Xaluminumalloyextrusion,tensileandcompressivestress-strainandcompressivetangentmoduluscurvesTestedatroomtemperature.Testdirection:L,longitudi-nal;LT,longtransverse.Typicalforextrusionthickness≥76.20mm(≥3.000in.).Ramberg-Osgoodparameter,n(L,tension)=45;n(LT,tension)=24;n(L,compres-sion)=40;n(LT,compression)=32.UNSA96061Source:MIL-HDBK-5H,1Dec1998,p3-272WA.2046061-T651Xaluminumalloyextrusion,tensilestress-straincurves(fullrange)Testedatroomtemperature.Typicalforextrusionthick-ness≤12.675mm(≤0.499in.).UNSA96061Source:MIL-HDBK-5H,1Dec1998,p3-275WA.2056061-T651Xaluminumalloyextrusion,tensilestress-straincurves(fullrange)Testedatroomtemperature.Typicalforextrusionthick-ness76.20mm(3.000in.).UNSA96061Source:MIL-HDBK-5H,1Dec1998,p3-276更多内容见附件免责声明：本页面/内容部分素材来源于互联网公开信息，旨在传递更多信息，不代表本平台立场。版权归原作者或机构所有，如涉及侵权，请通过平台联系我们，我们将在核实后第一时间处理。本平台对转载内容的真实性、准确性不作任何保证，用户需自行判断并承担使用风险。

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