Exercise1 Flood Kimura

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Transcript of Exercise1 Flood Kimura

  • TutorialsofNays2DFlood

    Exercise1.FloodanalysisExercise2.Tsunamianalysis

    Exercise1. Flood analysis

    Simulate the flow regime (water depth and flow velocity) by using Nays2DFlood in an actual river section with a flood discharge.

    Objectives:

    Step1: Prepare the topography data

    Step2: Import data and Creating the calculation grid

    Step3: Setting the calculation conditions

    Step4: Making a simulation

    Step5: Visualizing the calculation results

  • Exercise1.Floodanalysis

    Exercise1. Flood analysis

    Step1: Prepare the topography data

    1. Downloadthetopographydataofthe floodplainfromSRTM(ShuttleRadarTopographyMission NASA).

    2. ConverttheSRTMdata byusingQGIS.

  • Exercise1.FloodanalysisTargetarea

    Exercise1.FloodanalysisTargetriver()andfloodplain

  • Exercise1.Floodanalysis1. Download the topography data of flood plain from SRTM.

    Procedureofdownloadthedata:textbookChapter4.URL:http://srtm.csi.cgiar.org/SELECTION/inputCoord.asp

    http://srtm.csi.cgiar.org/SELECTION/listImages.asp

    Exercise1.Floodanalysis Selectthedownloadoptions.

    WorldGeodeticSystemisEPSG:4327:WGS84.CoordinatesystemisUTM.Tiff6.0format.

    TaggedImageFileFormatincludinggeoreferencedata.http://srtm.csi.cgiar.org/SELECTION/listImages.asp

  • Exercise1.FloodanalysisCoordinate System:UTM(UniversalTransverseMercator)

    http://www.dmap.co.uk/utmworld.htm

    http://coordtrans.com/coordtrans/

    Exercise1.Floodanalysis Selectthetargetarea.

    Targetareahttp://srtm.csi.cgiar.org/SELECTION/listImages.asp

  • Exercise1.FloodanalysisClick [ClickheretoBeginSearch>>].

    Clickherehttp://srtm.csi.cgiar.org/SELECTION/listImages.asp

    Exercise1.FloodanalysisClick [DataDownload(FTP)].

    Clickherehttp://srtm.csi.cgiar.org/SELECTION/listImages.asp

  • Exercise1.FloodanalysisDecompressedthedownloadedfile[srtm_60_05.zip].

    Tifffileincludingtopographydata(satellitedate)

    Exercise1.Floodanalysis2. Convert the SRTM data by using QGIS

    DownloadtheQGISversion2.6(oneofthefreeGISsoftware).URL:http://qgis.org/ja/site/forusers/download.html

    or TheinstallerofQGISisintheNays2DFloodsamplefolder.

    http://qgis.org/en/site/forusers/download.html

  • Exercise1.Floodanalysis StarttheQGISversion2.6. Importthesatellitedate[srtm_60_05.tif].

    Exercise1.FloodanalysisThen,topographicmapwillappearasbelow;

  • Exercise1.FloodanalysisChangethelayerpropertyoftheelevationlabel.Rightclickthe[srtm_60_05]intheLayers,andselect[Properties].

    Exercise1.FloodanalysisChangetheLayerPropertiesasbelow;

    Clickhere

    Click[OK]

  • Exercise1.FloodanalysisThen,thetopographymapbecomesclear.

    Exercise1.FloodanalysisNextstepistoclipyourtargetareafromthetopographymap.

    Targetarea

  • Exercise1.Floodanalysis Select[Raster>Extraction>Clipper]onthemenubar.

    Exercise1.Floodanalysis Inthe[Clipper]window,entertheinputandoutputfilenames.

  • SelectthetargetareabyPCmouse

    Exercise1.Floodanalysis SelectthetargetareaonthetopographymapbyPCmouse.

    Exercise1.FloodanalysisTargetareawillbeclippedasbelow;

    RemovetheoldlayerNewlayerwillappear.

  • Exercise1.FloodanalysisChangetheCoordinatefrom[latitude/longitude()]to[PlaneCoordinates(XY)].

    Select[Raster>Projections>Warp(Reproject)]onthemenubar.

    Exercise1.FloodanalysisEntertheinputandoutputfilenames. Selectthecoordinatesystemofinputandoutputfiles,respectively.

    WGS84/UTM50N

  • Exercise1.FloodanalysisCoordinate System:UTM(UniversalTransverseMercator)

    http://www.dmap.co.uk/utmworld.htm

    50N

    Exercise1.FloodanalysisThen,coordinatesystemofthetargetareawillbechangedasbelow;

    NewlayerRemovetheoldlayer

  • Exercise1.FloodanalysisExportthetopographydataofthetargetarea. Select[Raster>Conversion>Translate(ConvertFormat)]onthemenubar.

    Exercise1.FloodanalysisEntertheInputandoutputfilenames.

    [.xyz]fileextension

  • Exercise1.Floodanalysis Selectthecoordinatesystemoftheinputfile.Click[OK].

    Exercise1.FloodanalysisAftergettingthetopographydatafromQGIS,wehavetochangetheformatofthefiletobeabletoreaditintotheiRIC.

    Openthe[srtm_60_05_ex2.xyz]filebyExcelsoftware.

    Openthe[.xyz]filebyExcelsoftware.

  • Exercise1.FloodanalysisCheckthenumberoflinesofdata. Insertablanklineatthetopofthesheet.Addthetotalnumberoflinesinthefirstrowandsaveit.

    Xcoordinate Ycoordinate Zcoordinate

    12

    3

  • Exercise1.FloodanalysisChangetheextensionfrom[.xyz]to[.tpo]tobeabletoreadthefileintotheiRIC software.

    Changetheextensionfrom[.xyz]to[.tpo].

    Topographydatawascompleted!!

    Exercise1. Flood analysis

    Step2: Input the topography data and

    Create calculation grid

    1. StarttheiRIC software2. Inputthetopographydata3. DownloadbackgroundimagesfromGooglemap4. Createcalculationgrid

  • Exercise1.Floodanalysis1. Start iRIC software

    StarttheiRIC version2.3. Select[CreateNewProject].

    Exercise1.Floodanalysis Select Nays2DFloodv4.1.

  • Exercise1.FloodanalysisOpenthePreProcessingWindowforNays2DFlood.

    Exercise1.Floodanalysis2. Import the topography data

    Select[Import>GeographicData>Elevation]onthemenubar. Import[srtm_60_05_ex2.tpo]file.

    Import[srtm_60_05_ex2.tpo]file.

  • Exercise1.FloodanalysisThen,topographymapwillappearasbelow;

    Exercise1.FloodanalysisChangethecolorlabeloftheelevation.Rightclick[Elevation]intheobjectBrowser. Select[ColorSetting].

  • Exercise1.Floodanalysis Setthevaluerangeofelevationasbelow;

    RemovethecheckSetthevalue

    Exercise1.Floodanalysis3. Download back ground mages from Google map

    Changethetransparentofthetopographymap.Rightclick[Points1]intheobjectBrowser,andselect[Property].

  • Exercise1.Floodanalysis SettheDisplayMethodas[Surface].Checktheboxof[Transparent],andthevalueissetto[30].

    Exercise1.FloodanalysisThen,topographicmapwillbesemitransparent.

  • Exercise1.Floodanalysis SelectthecoordinatesystembeforewedownloadGooglemap. Selectthe[File>]onthemenubar.

    Exercise1.FloodanalysisClicktheEditintheProjectPropertywindow.

  • Exercise1.FloodanalysisEnter[WGS84]intheSearchbox. Select[EPSG:32650:WGS84/UTMzone50N]Click[OK].

    Exercise1.Floodanalysis Select[import>GoogleMapBackgroundImage].

  • Exercise1.Floodanalysis SelectaresolutionofGooglemapintheZoombox.Thedefaultnumberofzoomissetdependontheyourtopographydataincludingcoordinate.

    Ifyouwanttodecreasetheresolution,youcanchangethenumbersmall.

    Exercise1.FloodanalysisGooglemapimageswillbedownloadedbehindofthetopographymap.

  • Exercise1.Floodanalysis4. Create the calculation grid

    Select[Grid>SelectAlgorithmtoCreateGrid]. Select[Creategridfrompolygonallineandwidth].

    Leftclick

    Doubleclick(or[ENTER])

    drag

    SelectfromUpstreamtoDownstream

  • Exercise1.Floodanalysis SetthegridcellnumbersintheXandYdirections. Setthewidthofthecalculationgrid.

    Exercise1.FloodanalysisCalculationgridwillbecreated.

  • Exercise1.FloodanalysisChecktheelevationcontourofthecalculationgrid.

    Check

    Removethecheck

    Exercise1. Flood analysis

    Step3: Set the calculation conditons

    1. Setthecalculationconditions2. Settheinflowpointsanddischarge

  • Exercise1.Floodanalysis

    Selectthe[CalculationCondition>Setting..]onthemenubar.1. Set the calculation conditions

    SetOutflowconditionforbothj=1andnj boundaries

    SelectInflow/OutflowBoundaryConditionsintheGroups. SettheBoundaryConditions:Outflow

    Exercise1.Floodanalysis

  • Exercise1.Floodanalysis

    Select[InitialWaterSurface]inthegroup.Noneedtochangetheconditions.

    Exercise1.Floodanalysis

  • Select[Time]intheGroups.Outputtimeinterval(Sec):600(s)Calculationtimestep(Sec):3(s)

    Exercise1.Floodanalysis

    Select[Others]intheGroups.Noneedtochangetheconditions.

    Exercise1.Floodanalysis

  • Exercise1.Floodanalysis

    Rightclick[BoundaryConditionSetting]intheObjectBrowser. Select[AddInflow].

    2. Set the inflow points of the calculation gird

    Exercise1.FloodanalysisThen,newlayer[NewInflow]willappear.

  • Exercise1.FloodanalysisThen,BoundaryConditionwindowwillappear.Changethename:inflow_1 Select[Edit]tosetdischargedata.

    Exercise1.FloodanalysisClick[Import].Then,select[qt1_1.csv]fileinthe[Nays2DFlood>Sample_data>Exercise1_Flood]

  • Exercise1.FloodanalysisThen,dischargewillbeimported.Click[OK].

    Exercise1.Floodanalysis Select[Grid>BoundaryCondition>Inflow_1]. Selectinflownodesasbelow:

  • Exercise1.FloodanalysisThen,rightclickonthetopographymap. Select[AssignCondition].

    Exercise1.FloodanalysisThen,thenameofinflowwillbeappearasbelow;

  • Exercise1.Floodanalysis Inthesameway,wewillsetanotherinflowpoints(inflow_2).Dischargedatais[qt1_2.csv]inthe[Nays2DFlood>Sample_data >Exercise1_Flood]

    Inflow_2

    Exercise1. Flood analysis

    Step4: Making a simulation

  • Exercise1.FloodanalysisOnthemenubar,select[Simulation>Run].Also,saveyourfileasaniproformat(Compressedfile).

    Exercise1.FloodanalysisThen,solverconsolewindowwillappear.

  • Exercise1. Flood analysis

    Step5: Visualizing the calculation results

    Exercise1.Floodanalysis Select[CalculationResult>Opennew2DPostProcessingWindow]onthemenubar.

  • Exercise1.FloodanalysisCheckthe[Depth]and[BackgroundImages]intheObjectBrowser.

    Exercise1.FloodanalysisRightclick[Scalar],andselect[Property..]tochangethecolorvalueofthecontourmapofdepth(m).

  • Exercise1.Floodanalysis Setthecolorv