OLGA

OLGA2000GridGenerator

OLGA2000GridGenerator

Pagei

TABLEOFCONTENTS

Page

1.

2.

INTRODUCTION1

MAINOPTIONS

2.1

ProfileSimplificationmethods

2.2

Inputasanxyfile

2.3

InputdirectintheGraph

2.4

EditanOLGAGeometry

2.5

F关于启示的作文 ilteringtheXYdatat

2.6

ViewOLGAGeometry

2.7

CheckofGeometrySectioning

2

3

3

9

9

10

11

12

3.

ADDITIONALOPTIONSANDHELP13

3.1

Graph13

3.2

Help14

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UCTION

TheGridGeneratorisaufultoolforgeneratingoreditingOLGABranchGeometry.

Dependingontheinformationavailable,thetasktobedonecouldbeon马本斋纪念馆 eofthe

following:

onofanewGeometryfromapipelineprofileavailableasanxydatatinanASCIIfile.

onofanewGeometryfromscratch.

cationofanexistingGeometry.

TheGridGeneratorisavailablefromtheOLGAGraphicalUrInterface’s(GUI’s)

GeometryButton.

nput

fileisnotgeneratedearlier,clickonNewunderGUI'sCaMenu,chooan

utry

toopentheGridGenerator,youwillbeaskedtosavethefileoncemore.

IfyouleavetheGridGeneratorandtrytoopenitagain,youmighteamessage

-Gridgeneratorisalreadyrunning-Ignorethemessageandtrytostartonce

more.

ing

mayalsobenecessaryatlaterstages;thewindowmustbelargeenoughforthe

messagefieldatthebottomtobevisible.

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TIONS

ThemenubarintheupperpartoftheGridGenerator'smainwindowhas3alternative

buttons,eachwithasubmenu.

The6buttonsarrangedverticallyontheleftsideofthemainwindowgivethe

nchoicesforgettingstartedare:

ViewGivingoverviewwithpipeinformationforanexistingGeometry.

NewTobeudwhenyouwanttoestablishtheprofilefromscratch.

EditChanginganOLGAgeometryalreadygeneratedandloadedintothe

GUI.

CheckCheckGEOMETRYctioningagainstthediscretizationruleofnot

havinganyctionmorethantwiceorlessthanhalf,ofaneighbourction.

XYWhenanxyASCIIfileforthepipelineprofileisavailable.

FilterXYReducingthenumberofxypointsbyapplyingafilter.

Zoominginthegraphwindowisperformedbylectingapointinthewindow

withtheleftmoubutton,tmouclick

binationofshiftandarightmouclick

retsthewindow.

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2.1ProfileSimplificationmethods

Foreachpairofxyinthepipelineprofiledatagivenasinput,anewpipewillbeadded

tionofthenumberofpipescansometimesbe

necessarytoavoidlongsimulationtimeorbecauthedatatdoesnotreprentthe

ferentmethodstoreducethenumberofpipesinan

OLGAgeometryareavailablewithinthegridgenerator.

Thefirstmethodinvolvesarearran染发注意事项 gementofthepipeprofilebylumpingtogether

ng

withtheXYoptioninthegridgenerator,therewillbeachoicebetweenanexact

ionis

describedinsomedetailinchapter2.2.

enumberofpipesisreducedby

hodsis

recommendedwhenthedistancebetweenthedatapointsissmallindicatingthatthe

rion

isfurtherdescribedinchapter2.5.

2.2Inputasanxyfile

XYfileFormat

Whenthexybuttonisclicked,anewwindowopensprentingabuttonforloading

ickingthebutton,afilebrowrpopsupwiththe

contentofthedirectorywheretheinputfileisstored.

not,awarning

yfileislocatedinadirectorywithspacein

thepathanerrorwilloccur.

Ifthexyfilehasacorrectformat,thexyprofilewillappearinthegraphwhenthefileis

-profilemusthavetheextension*.xyandaformatasshowninthe

examplebelow:

#MM

0-69.4944

160.9344-70.3478

321.8688-71.0794

482.8032-71.3232

643.7376-71.3232

804.6720-71.0794

Thexvaluesmustbelistedinincreasingorderandbeinmeters.

Thefirstcolumnisx-data(horizontaldistance),thecondisy-data(height).Thefirst

lineinthefilemuststartwithahash(#)characterandbefollowedbythetwounitsof

thexydatacolumns,paratedbyspaces.

Thexy-datafilecanbethebasisofageometrytobecreatedwiththeGridGenerator.

Whenthefileisloaded,thexy-dataisplottedasathinblacklineandthefirstestimate

o

twoendpointshaveaspecialtag:dGeneratorisnowinitiatedandreadytobeud.

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ScaleXY-Data

Ifyouhaveudaheadingdeviatingfromtheformatprentedabove,youwillgetan

errormessageanda政治学习计划 noptiontoscaleyourxydatafile.

Scalingfactors(x-factorandy-factor)canbedefinedforthex-andy-datatogetherwith

thenewunit(whichhastobemeter(M)).WhenOKislectedyouwillbeaskedfor

xy

filehastobere-loadedbeforeworkcanproceed.

Typicalexamplesofthisfunctioncouldbescalingthex-datafromkmtom(u1000

asthexscalingfactor)orscalingbothx-andy-datafromfeettometer(u0.3048for

bothscalingfactors).

EditXY-DataFile

UnderTools-EditFileintheMainMenubar,afilebrowrwillappeardisplayingthe

ectionofaxy-datafile

hangeshavebeenmadeinthexy-data

file,thefilehastobeloadedintotheGridGeneratortoreflectthechangesperformed.

YoumaychoowhicheditortoubymodifyingthevalueofEDITORinthefile

OLGA-2000/olga-2000.4/gridgen/source/aulteditorisNotepad.

SimplificationoftheProfilebyrearrangingpipes

Startingwiththexyfileloadedinthegraphbythexybutton,clickingtheNextbutton

startstheprocessofsimplifyingtheprofile.

Th酸杨桃 esimplificationprocessfollowedhereinvolvesarearrangementofthepipeprofileby

amethodproventobe

rrangementofpipesand

therebytheholdupisgenerallynotrecommen五代之天下一统 dedforsimulationsoftypicaltransients

suchasstartup,ramp-up,pigging,orslug-tracki考纲 ng.

Inordertoavoidrearrangementsofspecificpointsorpartsoftheprofile,profile

tetheinrtbutton

heinrtingiscompleted,

pressNext.

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Inthenewwindowyoucanlectgmentsinaccordancewiththefixpointschon.

Byclickingononeoftheprofilegmentsinthelisting,andthenonSimplifylected

gmentanewwindowopens.

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ThewindowProfileSimplificationInputhasaprofileangledistributiontablewith24

ssibletochooyourowntablewithsmallerclasssizesfortheangle

lttablewillbeloadedifthe

tgiveeachsimplifiedprofile

king

onFullCalculationthenewsimplifiedgeometryandtheangledistributionwillbe

checkthe

distributionofinclinationangles,clickonAngleDistribution.

IftheoptionCreateSegmentwithexactXYdataislected,thepipesaregenerated

directlyanddisplayedintheprofilegraph.

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Whenallgmentsintheprofileshavebeendealtwith,clickingforthenextgraph

metrymaybemodifiedby

,however,notrecommendedfor

ttertorepeattheprocesswithnewfixpointsor

simplificationassumptions.

Inthenextwindowtheau海底两万里好词好句 tomaticoptionforSectionDiscretizationshouldnormallybe

llcureasmoothchange(themaximumwillbeafactor2)inthe

lengthofneighbouringctions.

ThemaxlengthofactioninteredaswellasthedataformatfortheBranch

Geometryintheinputfile(xyorlength-elevation).Pipediameterandroughnessshould

beenteredtoavoidlatererrormessagesintheGUI

ThepipectioningandgenerationoftheOLGAgeometryiscompletedafterpressing

CreateandthenFinished.

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Inthenewwindowyouwillethebranchgeometryandasamessageatthebottom

line:numberofpipesandctions.

theclo

buttonintheupperrightcornerofthewindow.

Afterafewcondsthemessage-Gridgeneratorfinished-willappearinapopup

window:ThenewgeometryisnowloadedintotheinputfileintheGUI.

BeforetheprocessofcompletingtheinputfileintheGUIisstarteditisrecommended

doneinthemenuTools-Options.

Ifyouhavebeenworkingwithanewfile,youhavetocompletetheinputfilewiththe

existingfile,youhavetoedittheexistingkeyword

ouwillalsohavetoedittheGEOMETRYwith

additionalwall,diameterandroughnessdata.

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2.3InputdirectintheGraph

Thisoptionisufulwhenyoudon'thaveaxyfileandwanttoinrttheprofile

theNewbuttonandfillintherequiredinitial

rtogetasuitableworkingarea,thecoordinatesatthestartingand

endingpointsaswellasthelowestandhighestpointsofthepipelineprofilemustbe

given.

Thenextgraphdisplaystheworkingareaforthepipeline,suitableforinrtingpipe

lowinggraphisthePipeSectioningCreationwindow

toftheprocessofgeneratingacompletegeometry,

willbethesameasprentedthere.

2.4EditanOLGAGeometry

TheEditoptioninthestartupwindowca桂枝功效 nbeudtomodifygeometryprofilesloaded

intothegridgenerator.

AbrowrwillappeargivingachoicebetweentheOLGApipebordergeometryprofiles

toftheprocessofgeneratinganeditedgeometry(pipe

editingandctioning),willbethesameasprentedin2.2

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2.5FilteringtheXYdatat

gthroughthedataries,thefilterrejects

thenextdatapointifitisclortothecurrentdatapointthan'Sampledistance'inx-

directionor'dy'distanceanddyarechonbytheur.

SAMPLEDISTANCE

dy

DISCARDED

KEPTRESULT

Afterloadingtheoriginalprofileandenteringdyandsampledistance,thefilteredprofile

eresultis

satisfactory,thechonfilteredfileissavedbyclickingSaveXY.

Aftersavingthefilteredfile,thenextsteptocompletethegenerationofageometry

wouldbetoutheoptionsavailablethroughtheXYbuttononthefilteredxyfile.

Thefilteringisrecommendedwhenthedistancebetweenthedatapointsissmall,say

1-10m,indicatingthattherealpipelineprofilewillbesmotheredoutcomparedwith

originalxydata.

Thefiltergenerallymustbeudwithcaretoavoidtheremovalofdatawhichmight

luidvelocities,pipeinclinationsassmallas0.1

degreecouldbeofimportance.

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2.6ViewOLGAGeometry

InthisoptionisitispossibletoloadsingleormultipleOLGABranchGeometriescas

leviewischon,thepipenumberwillpopupwhenthepipeprofile

isclicked.

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2.7CheckofGeometrySectioning

ItisimportantforOLGA'snumericalschemethatthechangeinthelengthbetween

bleprincipleisthatthechangeshouldnotbe

higherthanafactorof2upordown.

WhentheCheckbuttonispresd,thegeometryprofilesloadedinthegridgenerator

chongeometrytheratiobetweenthelengthof

tioshouldbebetween0.5and2.

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ONALOPTIONSANDHELP

3.1Graph

GraphisasubmenuintheMainMenuBarwithdifferentalternativesaffectingthe

contentandoutlookofthepipelineprofilegraphs

ShowPipeBorders

Selectingthisbutton,acascademenuwiththenamesoftheprofilesinthegraph

ectedprofilewillbedisplayedwithpipeborders.

HidePipeBorders

Selectingthisbutton,acascademenuwiththenamesoftheprofilesinthegraph

ectedprofilewillbedisplayedwithoutpipe

borders.

CleanGraph

Thiscommandwillremovetheinformationloadedinthegraphwindow.

Legend

Thischeckbuttontogglesthelegendon/offinthelowerrightcorneroftheGrid

mestheloadedprofilescancontaindatapoints,

thelegendbylectingthisoption.

SetAxis

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wwillappear

wheretheurcanchangetheminimumandmaximumvaluestobeudalong

zoomoperationthettingswillreverttothedefaultaxes

displayingthecompleteprofile.

Configure

Thiswillstartthegraphwindowconfigurationprogramasforthegraphwindow.

Print

-containingthegraph

windowwithframes,savedondisk,

createdfilewillbeoverwrittennexttimethesamefunctionalityisud,therefore,

copyorrenamethefileifyouwanttosavethefileforlateru.

3.2Help

Helpisavailableonaparatebuttonineachofthemainoptionswindows.

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