icepak-03-geometry

C-1ModelBuilding:GeometryC-2Topics•ObjectShapesinIcepak•Editingfunctions•Alignmentfunctions•UnitsC-3ShapesinIcepak:Shapesofsimpleobjects3Dshapes•Prism•Cylinder:uniform/non-uniform•Polygon:uniform/non-uniform•BlockscanbeEllipsoid/EllipticalCylinder2Dshapes•Rectangular•Circular•Inclinedrectangular•PolygonPlatesOpeningsGrillesWallsFansSourcesBlocksResistancesHeatExch.C-4ShapesinIcepak:AlteringgeometriesofobjectsTheshape,position,sizeandorientationofanobjectmaybemodified:•UsingtheCurrentObjectGeometry(COG)windowlocatedatthebottomrighthandcorneroftheGUI•Usingthecurrentobject’seditform/geometrysectionGeometryofanobjectincludes:•Shape,•PositionandSize•LocalCo-ordinates•Orientationif2-DC-5ShapesinIcepak:Objectgeometrywindow•Currentobject’sgeometricdetailsaredisplayedinthebottomrighthandcorneroftheGUI•ClickonApplyorEnterthekeyboardaftermakingchangesCurrentobjectC-6ShapesinIcepak:Objectgeometrywindow…Name,GroupandShapeCoordinatesmaybeenteredbystart/endorstart/lengthOptionsto:Applychanges,Resettodefaults,orEditobjectformC-7ShapesinIcepak:Optionsfor2DshapesRectangularInclinedCanalsobedefinedbystart/angleChangeangledirectionPositiondefinedbyco-ordinatesoftwopointsonthediagonalC-8ShapesinIcepak:Optionsfor2Dshapes…PolygonalCircularOptionstoincrease/decreasenumberofverticesSelectvertexlocationwithmouseSelectoptionsformouseFanscanalsohaveaninnerradiusforthehubC-9ShapesinIcepak:Optionsfor3Dshapes-PrismsRegularPrismPolygons-Uniform(highandlowfaceidentical)Polygons-Non-Uniform(highandlowfacenotidentical)Topandbottomfacescanhavedifferentnumberofvertices-butmustbeparallelSamevertexoptionsasfor2D-polygonalobjectsC-10ShapesinIcepak:Optionsfor3Dshapes-cylindersUniformCylinder-noinnerradiusUniformCylinder-withinnerradiusNon-UniformCylinder-withinnerradiiInnerRadiussettomodelannulusOuterandInnerRadiiontopandbottomofcylindercanbedifferentC-11ObjectModificationEditingObjectsOpensuptheEditpanelfortheselectedobjectPlacestheselectedobject(s)inthetrashcanOpensuptheMovepanelfortheselectedobject(s)•Fromthemovepanel,youcan•Scale•Mirror•Rotate•TranslateOpensuptheCopypanelfortheselectedobject(s)•Youcangroupthecopies,andalsohavesamefunctionalityasmoveavailabletoyouC-12ObjectAlignment:IconsAlignFace-1DimensionalignedPlaneofFaceMatchedAlignEdge-2DimensionsalignedPlanesofEdgeMatchedAlignVertex-3DimensionsalignedCentreObject-BasedonCentroidCentreObject-BasedonFaceCentreMatchFace-2DimensionsMatchedMatchEdge-1DimensionMatchedC-13Therearetwooptions•LeftClickonIconObjectgetsre-sizedduringalignment•RightClickonIconObjectsizeispreserved–objectismovedduringalignment•Canalsouseedit/alignmenttoolsinsteadoficonsObjectAlignment:Icons…C-14ObjectAlignment:Icons…Thealignmenttoolsallworkinthesameway•ClickonIconorselectfrommenu•Choosetheface/edge/vertexthatyouwanttochangewiththeLEFTMOUSEBUTTON•Theselectionwillbehighlighted-ifthewrongonewasselected,thenjustclickagainandIcepakwillselectthenextface/edge/vertex•OnceyouhavethecorrectselectionuseMIDDLEMOUSEBUTTON•Thenselecttheface/edge/vertexwithwhichtoalign/matchusingtheLEFTMOUSEBUTTON•UponcorrectselectionacceptwiththeMIDDLEMOUSEBUTTON•Instructionsfortheabovestepsaregiveninredinthebottomlefthandcornerofthedisplayarea•AtanypointyoucancanceltheoperationwiththeRIGHTMOUSEBUTTONC-15ObjectAlignment:CoordinatesnappingUsingCo-ordinatealignment:•Nexttotheco-ordinatesofthegeometryintheCOGthereareoptionstosnapthatco-ordinatetoanexistingpointonanedgeinthemodel.•Co-ordinatescanbe:•Start(xS,yS,zS)•End(xE,yE,zE)•Length(xL,yL,zL)•Centre(xC,yC,zC)•VertexToUse:•Clickonthe“Orange”panelforaco-ordinate,andthenwiththemouseclickonapointinthemodel.•Icepakwillthensetthatco-ordinatevaluetothepositionselected.C-16EditingObjects:theEditFormThecurrentobject’seditformcanbeopenedinthefollowingwaysDoubleclickingtheobjectinthetreeRightclickingtheobjectinthetreeandselecting“Editobject”fromthepulldownmenuSelecttheobjectinthetreeandclickthe“Openeditform”iconintheverticalModelToolbarFromthemainmenu,picking“Edit/Currentobject/Edit”Usingthekeyboardshort-cutctrl+lowercasee4Sub-formsOptionsCommontoAllSub-FormsC-17EditingObjects:GeometrySub-FormContainsallgeometricinformation:•Shape•LocalCo-ordinatesystem(ifany)•Orientation•LocationCreatenewlocaloriginChecklocaloriginEditalocaloriginSelectlocaloriginfromexistingonesPullDownMenuC-18EditingObjects:PropertiesSub-FormContainsallflow/thermalproperties:Objecttype-eg:•Thermalmodel•BlockTypeThisareacontains:•Solid/Fluidandsurfacematerialspecification•Boundaryconditions–flowrates,powergeneration,temperature•Sidespecification•Anyadditionalinformationrequiredtoimplementtheselectedobjecttype(eg:thickness)C-19EditingObjects:InfoandNotesSub-FormsNotes•AnyrelevantadditionalinformationusermaywanttoaddInfo•Name•CreationPriority•Shadingetc...C-20Units•Physicalquantitiescanbespecifiedinvariousdifferentunits•Examples:LengthTemperatureFlowrateConductivityPowerC-21Units:GlobalUnits•Everyquantity(length/mass/etc)inIcepakhasadefaultglobalunit•TochangetheglobalunitforaquantitygoundertheModelTree/Options/UnitDefinitionsandfol