Exercise2 Tsunami Kimura

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Transcript of Exercise2 Tsunami Kimura

  • TutorialsofNays2DFlood

    Exercise2.Tsunamianalysis

    Exercise2. Tsunami analysis

    Simulate the flow at a river mouth when tsunami-runup-induced flooding occurs by using Nays2DFlood.

    Objectives:

    Step1: Import data and Creating the calculation grid

    Step2: Setting the calculation conditions

    Step3: Making a simulation

    Step4: Visualizing the calculation results

  • Exercise1.FloodanalysisTargetisrivermouseof.

    Exercise2. Tsunami analysis

    Step1: 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.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.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].

  • Exercise1.Floodanalysis SettingthegridcenterlinebyPCmouse.

    Exercise1.Floodanalysis SetthegridcellnumbersintheXandYdirections. Setthewidthofthecalculationgrid.

  • Exercise1.FloodanalysisCalculationgridwillbecreated.

    Exercise1.FloodanalysisChecktheelevationcontourofthecalculationgrid.

    Check

    Removethecheck

  • Exercise2. Tsunami analysis

    Step2: Set the calculation conditions

    1. Setthecalculationconditions2. Settheinflowpointsanddischarge3. Settheroughnessconditions4. Correctingtheelevationofseaarea

    Exercise1.Floodanalysis

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

  • SelectInflow/OutflowBoundaryConditionsintheGroups.TheBoundaryConditions:OutflowThewatersurfaceatdownstream:Readfromfile Select[Edit]tosetthewatersurfacelevelatthedownstream.

    Exercise1.Floodanalysis

    Click[Import],andselect[dh01.txt]fileinthe[Nays2DFlood>Sample_data >Exercise2_Tsunami]

    Exercise1.Floodanalysis

  • Then,watersurfacelevel(m)atthedownstreamwillbeimported.Exercise1.Floodanalysis

    Select[InitialWaterSurface]inthegroup. Initialwatersurface:Constantslope. Initialwatersurfaceslopeofmainchannel:0.0001

    Exercise1.Floodanalysis

  • Select[Time]intheGroups.Outputtimeinterval(Sec):20(s)Calculationtimestep(Sec):0.2(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

    Then,newlayer[NewInflow]willappear. Selecttheinflowpointsbyusingpolygonasbelow;

    Exercise1.Floodanalysis

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

    Exercise1.FloodanalysisClick[Import].Then,select[qt01.txt]fileinthe[Nays2DFlood>Sample_data >Exercise2_Flood]

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

    Exercise1.Floodanalysis

    Rightclick[RoughnessCondition]intheObjectBrowser. Select[Add>Polygon].

    3. Set the roughness condition

  • Exercise1.Floodanalysis Selectallgridcellsbypolygon,andclick[Enter].Roughnessconditionoffloodplain(building):0.08

    Exercise1.Floodanalysis Inthesameway,makeapolygon2andspecifythelowchannelarea. SettheRoughnesscondition:0.025

  • Exercise1.Floodanalysis Inthesameway,makeapolygon3andspecifytheseaarea. SettheRoughnesscondition:0.025

    Exercise1.Floodanalysis4. Correcting the elevation of sea area

    Rightclick[RoughnessCondition >Polygon3]intheObjectBrowser. Select[Copy].

  • Exercise1.FloodanalysisThen,SelectGeographicDatawindowwillappear. Select[Elevation]andclick[OK]. Input[3]asanelevationvalueoftheseaarea.

    Exercise1.FloodanalysisAftermakingseveralpolygons,select[Grid>AttributesMapping>Execute]toassignthevaluetothecalculationgrid.

  • Exercise1.FloodanalysisCheckeithertheroughnesscoefficientsarepropertyassigned.

    Check

    Removethecheck

    Exercise2. Tsunami analysis

    Step3: Making a simulation

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

    Exercise1.FloodanalysisThen,solverconsolewindowwillappear.

  • Exercise2. Tsunami analysis

    Step4: Visualizing the calculation results

    Exercise1.Floodanalysis Select[CalculationResult>Opennew2DPostProcessingWindow]onthemenubar.

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

    Check

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

  • Exercise1.Floodanalysis Setthecolorvalueofthecontourmapofthedepth(m).

    Exercise1.FloodanalysisAnimationofthecontourmapofDepth(m).

    Startbutton

  • Exercise1.Floodanalysis

    Exercise1.FloodanalysisVisualizingflowvector.Check[Arrows]and[Velocity].

  • Exercise1.FloodanalysisRightclick[Allow],andselect[Property..]tochangetheallowlengthofthevelocityvectormap;.

    Exercise1.Floodanalysis Settheallowlengthofthevelocityvectormap.

  • Exercise1.FloodanalysisAnimationofthecontourmapofdepthandvelocityvectormap.

    End.

  • SettingtheroughnessconditionActuary,theroughnessconditionshouldbesetthevaluewhichdependsonlanduse.

    /ColorImageDict > /JPEG2000ColorACSImageDict > /JPEG2000ColorImageDict > /AntiAliasGrayImages false /CropGrayImages true /GrayImageMinResolution 300 /GrayImageMinResolutionPolicy /OK /DownsampleGrayImages true /GrayImageDownsampleType /Bicubic /GrayImageResolution 300 /GrayImageDepth -1 /GrayImageMinDownsampleDepth 2 /GrayImageDownsampleThreshold 1.50000 /EncodeGrayImages true /GrayImageFilter /DCTEncode /AutoFilterGrayImages true /GrayImageAutoFilterStrategy /JPEG /GrayACSImageDict > /GrayImageDict > /JPEG2000GrayACSImageDict > /JPEG2000GrayImageDict > /AntiAliasMonoImages false /CropMonoImages true /MonoImageMinResolution 1200 /MonoImageMinResolutionPolicy /OK /DownsampleMonoImages true /MonoImageDownsampleType /Bicubic /MonoImageResolution 1200 /MonoImageDepth -1 /MonoImageDownsampleThreshold 1.50000 /EncodeMonoImages true /MonoImageFilter /CCITTFaxEncode /MonoImageDict > /AllowPSXObjects false /CheckCompliance [ /None ] /PDFX1aCheck false /PDFX3Check false /PDFXCompliantPDFOnly false /PDFXNoTrimBoxError true /PDFXTrimBoxToMediaBoxOffset [ 0.00000 0.00000 0.00000 0.00000 ] /PDFXSetBleedBoxToMediaBox true /PDFXBleedBoxToTrimBoxOffset [ 0.00000 0.00000 0.00000 0.00000 ] /PDFXOutputIntentProfile () /PDFXOutputConditionIdentifier () /PDFXOutputCondition () /PDFXRegistryName () /PDFXTrapped /False

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