MIKE FLOOD - HydroAsia
Contents
1. Flooding kon GettingStartedMIKEFLOOD couple MIKE Flood wf HETT C Program Files DHISMIKEZero Examples MIKE_FLOOD FloodplainD emonstration Surface m21 big m21 BA Edit MIKE 21 input Standard Structure iv Edit MIKE 11 input Lateral Link Opti LJ i Urban Link Optio Look in Q River 4 M mi ibig sim1 1 4 My Recent Documents e Desktop s dl fm My Documents 35 My Computer ak EI EI ET Ee Mm ul EI EI ES DAI gt lA Navigation My Network File name za Places Files of type MIKE 11 Simulation files sim11 bd Cancel Validation Smuaton Mime AA Figure 2 Selection of a river set up Note the tick box which has been selected prior to activation of the browse button the ellipses Further the buttons are not active until the tick box has been selected 8 Explore the MIKE 21 model setup by clicking on the Edit M21 Input button Please refer to the MIKE 21 user manual for a full description of MIKE 21 model parameters and their specification 9 To see the MIKE 21 model grid describing the floodplain topography select the menu item Basic Parameters gt bathymetry and then the view button as shown in Figure 4 To better visualize the resulting topography in the graphic view you can choose to generate a new palette This is done through the main toolbar through the menu View gt Palette gt new Go through the2. You can read more about zero flow links and also the Standard link type and find detailed descriptions of the linkage options available in MIKE FLOOD in the MIKE FLOOD User Manual 10 MIKE FLOOD DHI Water amp Environment
3. steps needed in generating palette As can be seen the river branches are not defined in great detail in the topographic grid The location of the rivers is most clearly visualized through the MIKE FLOOD interface a close up is shown in Figure 3 2128000 3127500 372000 372500 373000 373500 ari Figure 3 Close up of the combined river and flood plain model 6 MIKE FLOOD DHI Water amp Environment MIKE FLOOD example SETUP ___m21big m21 sf MIKE 21 Flow Model sf Basic Parameters sf Module Selection Bathymetry Type Number sf Simulation Period 7 Cold start zy Boundary ar start Number of areas 1 sf Source and Sink sf Mass Budget Y Flood and Dry Hydrodynamic Parameters Additional information Map projection UTM 30 v Apply Coriolis forcing Landslides E Bathymetry Origin Enclosing Area C Program Files JSurfacelbathy d30a d Veje bathy_d30a disz ArcView Grid Data Navigation I Total number of erro 10 10 0 539986 10 10 0 672427 10 O9374698 0 773008 10 0 8813318 0 773407 10 09162914 0 958524 10 08312857 0 741886 10 06545715 0 657925f 10 0 5575138 0 560779 10 0 7542171 05567812 16 10 O6875616 0 544280 NTSANS1 14184477 Figure 4 Access to the grid file used to describe the floodplain IS gained through the MIKE 21 interface Grid spacing 30 meter At thi
4. DHI Water amp Environment Agern All 5 DK 2970 H rsholm Denmark Tel 45 4516 9200 Fax 45 4516 9292 E mail dhi dhigroup com Web www dhigroup com WATER amp ENVIRONMENT MIKE FLOOD Modelling of River Flooding A Step by step training guide DHI Software 2007 DHI Water amp Environment DHI Software 2007 DHI Water amp Environment CONTENTS MIKE FLOOD Modelling of River Flooding Step by step training guide GETTING STARTED WITH RIVER MODELLING IN MIKE FLOOD 3 l BRIEF INTRODUCTION TO MIKE FLOOD 3 2 PURPOSE OF THIS DOCUMENT surre 3 3 MIKE FLOOD EXAMPLE EP 4 3 1 Fono EE notarea dt ie ocean ac da lata ba il baba cual 4 gt Creating the MIKE FLOOD file for the Example Model Setup wwmwewa 4 3 3 Lateral coupling of rivers to their respective flood plains e 7 3 4 Setung UDA SUA EE EE 9 4 THEME SETUP a aE ar ATE EE A 10 i DHI Water amp Environment li MIKE FLOOD DHI Water amp Environment Brief Introduction to MIKE FLOOD Getting Started with river modelling in MIKE FLOOD 1 BRIEF INTRODUCTION TO MIKE FLOOD MIKE FLOOD is a tool that integrates the models MIKE 11 MOUSE and the MIKE 21 into a single dynamically coupled modelling system Using a coupled approach enables the best features of all three models to be utilized while at the same time avoidi
5. LOOD setup file under a name of your choosing in the examples folder Examples MIKE_FLOOD FloodplainDemonstration 3 Don t overwrite the existing MIKE FLOOD setup file in the example files folder MIKE Flood Definition Standard Structure Lateral Link Opti Urban Link Optio My Recent Documents Desktop My Documents EU My Computer My Network File name m21big m21 x Places Files of type MIKE 21 m21 MIKE 21 FM files m21fm vi gt 7 Navigation Mm gt Yalidation MIKE 11 Execution Log Figure 1 Selection of MIKE 21 file 4 Activate the Definition menu item on the left of the MIKE FLOOD interface 5 Select the appropriate MIKE 21 simulation files in the Definition section of the MIKE FLOOD editor found in the folder Surface 6 Activate the tick box to activate the MIKE 11 model selection see Figure 2 7 Explore the MIKE 11 model network by clicking on the Edit MIKE 11 Input button in the Definition dialog To see the river network click the Input tab on the resulting dialog box then click the Edit button beside the item specifying the Network file Figure 2 Please refer to the MIKE 11 user manual for information on browsing features and data forms in the river Network file the Cross section file and other MIKE 11 simulation files A Step by step training guide 5 DHI Water amp Environment Ss Modelling of River
6. ain The culvert has already been set up in a short MIKE 11 branch The branch containing only two cross section The goal is now to couple the end points of this branch to cells within the two dimensional domain The following procedure should be followed to accomplish this 1 Right click in the graphical view see Figure 5 and select the Link River Branch to MIKE 21 ANIC river branch ta TAL Link type C Lateral link kd pn Cancel Standard or structure link Upstream end C Downstream end Link info River name Topo ID Figure 9 The selection of the branch end to couple for the culvert 2 Select the upstream end of the branch named culv1 and the topo ID struc and click OK 3 A new structure link has now been added to the table Note that the table on the left holds one set of j k coordinates though it is possible to link multiple cells 4 Since a culvert has both an upstream end and a downstream end it 18 necessary to specify a linkage for both ends of the A Step by step training guide 9 DHI Water amp Environment Ss Modelling of River Flooding CULV1 branch to the MIKE 21 grid The downstream linkage is set up by repeating the above process and selecting the downstream end of the branch 5 Once again you have to specify how flow will be interchanged for these culvert links between MIKE 11 and MIKE 21 In the MIKE FLOOD editor click the Standard Str
7. lation Instead this document is intended to discuss the steps required to link a MIKE 11 1 dimensional river model a MOUSE sewer model with the MIKE 21 2 dimensional floodplain model to create a MIKE FLOOD coupled 1 D 2 D floodplain model It is assumed that the user has a working understanding of the applicable hydraulic engineering principles and hydraulic modelling in general before beginning this MIKE FLOOD example setup 3 2 Creating the MIKE FLOOD file for the Example Model setup The procedure below will walk you through the steps to link an existing MIKE 11 and an existing MIKE 21 model setup thus constructing an MIKE FLOOD model encompassing the rivers and the surrounding floodplains You will create a new MIKE FLOOD simulation file and add lateral structure zero flow and urban links described in detail in the MIKE FLOOD User Manual to accomplish this If you wish instead to load the fully linked MIKE FLOOD simulation coupling file 1t can be found in the examples folder of the installation typically the location Examples MIKE_FLOOD FloodplainDemonstration To create the MIKE FLOOD example model from the existing 1D and 2D models do the following 4 MIKE FLOOD DHI Water amp Environment MIKE FLOOD example SETUP Sse 1 Start MIKE FLOOD from your computer s START menu under Programs DHI Software gt MIKE FLOOD 2 Create a new MIKE FLOOD simulation file by choosing File New MIKE FLOOD MIKE FLOOD Save the MIKE F
8. ng some limitations that may be encountered when using the components separately 2 PURPOSE OF THIS DOCUMENT The purpose of this document is to assist the user in understanding the relationships among the model files and linkage types that make up a MIKE FLOOD river model simulation data set and provide a step by step example of how to set up a basic MIKE FLOOD floodplain model using existing MIKE 11 and MIKE 21 model data files The set up of a two dimensional overland model and a one dimensional sewer model is treated separately in the document Modelling of Urban Flooding A Step by step training guide 3 DHI Water amp Environment SS Modelling of River Flooding 3 MIKE FLOOD EXAMPLE SETUP 3 1 Introduction to the example model The example model referenced in this document is the Floodplain Demonstration example discussed briefly in the MIKE FLOOD User Manual which can be found on your computer after MIKE FLOOD installation in the sub folder Manuals MIKE_ FLOOD of the installation folder typically the installation folder 1s C Program Files DHI MIKEZero This document is not intended to provide a step by step comprehensive tutorial on setting up the MIKE 11 and MIKE 21 components of the MIKE FLOOD model Detailed information on the creation of new MIKE 11 MOUSE and MIKE 21 models datasets can be found in their respective software user and reference manuals included with the software instal
9. odel setup and should generally be oriented so that predominant flow direction follows either the J or K direction 9 After you ve specified where the flooding from MIKE 11 should enter the left side floodplain now you need to specify how flow will be interchanged for this link between MIKE 11 and MIKE 21 So in the MIKE FLOOD editor click the Lateral Link Options section Set up the lateral link options as MIKE FLOOD MIKE FLOOD example SETUP Sse shown in Figure 5 Please refer to the MIKE FLOOD User Manual for a description of the meaning and use of the options available here for Lateral and other types of links M11 Structure External Files Side Method Type Source Depth Tol Weir C Fric n FLC Geometry OH Table HGH 0 100 0 050 i 1 Lateral Left Cellto Cell eir 1 1 838 Figure 8 The lateral ink options for the left link along the Trib branch Link type Congratulations You ve now set up your first MIKE FLOOD model by linking MIKE 11 to MIKE 21 You can start the model simulation by choosing Run gt Start Simulation from the top menu and then explore the model results to see how flow is exchanged in this very basic model All you need to do now is to connect the remaining branches to their respective floodplains to complete the lateral linking process 3 4 Setting up a structure link This section will focus on coupling a culvert under a major road embankment to the two dimensional dom
10. s point the two main model components have been brought into the MIKE FLOOD interface The goal from here on is to couple the river and the floodplain using the various tools available within the MIKE FLOOD editor 3 3 Lateral coupling of rivers to their respective flood plains A Step by step training guide The set up has two branches River and trib These will be coupled along the river banks to the two dimensional domain to do this the following steps should be followed 1 Right click in the graphical view to display a range of tools 8128000 Zoom In Zoom to Full Extent i Previous Zoom 8127500 Next Zoom i Pan Shift Grid 4 372000 372500 Copy to Clipboard Save to Metafile Save to Bitmap Add Remove Layers Layer Properties Add Remove Images Link river branch to MIKE 21 Block out river cells Link urban node to MIKE 21 Figure 5 Right clicking in the graphical view 2 Select the option Link river branch to MIKE 21 to display the linking menu 7 DHI Water amp Environment 8 DHI Water amp Environment Link river branch to MIKE 21 Modelling of River Flooding Link type Lateral link Kenter v p Left Cancel Standard or 4center ya Right Link info River name Topo ID Chainage upstream Chainage downstream Figure 6 The lateral linkage tool 3 This first link is between
11. the tributary stream and the left over bank floodplain area of the MIKE 11 river branch called TRIB The linkage extends along the tributary from MIKE 11 chainage 1350 00 meters to chainage 1885 00 meters and should join the MIKE 11 reach to a number of grid cells in the MIKE 21 model Select the Lateral link as the link type 4 Select a Left in the combo box 5 Specify the river name and the topo ID along with the chainages of the reach to be coupled The appropriate cells have now been selected in the grid 7 The first link entry is empty and should be deleted This is done by marking it and then clicking the delete button on the right see Figure 7 S Ea axele Mii Chainage M21 Area Ho of M21 River name Urban ID Coupling type ee Standard E HD only 0 000 2 Lateral HE only TRIB 1350 000 1685 000 1 24 Link type TITI TIT TIT Figure 7 Deleting the first non valid row in the MIKE FLOOD editor 8 The specific linked cells is specified in the left table named M21 Coord 1 MIKE 21 grid cells are set up ina J and K coordinate system instead of Northing and Easting to allow for rotated grids In this case the J direction represents columns in the grid which would be X or Easting in a typical map coordinate system and the K direction represents rows in the grid Y or Northing in a non rotated grid The rotation of the MIKE 21 grid is determined upon initial m
12. ucture Link Options section Set up the link options as shown in rows 2 and 3 in Figure 10 Link Mom Ext Fact Add aici Depth Activation Activation ee ink type Fact Flow Adjst Depth min Depth max FE Lateral 1 000 Structure l Replace 0 500 Structure l Replace 0 500 SE 10 The lateral link options for both ends of the culvert Please refer to the MIKE FLOOD User Manual for a description of the meaning and use of the options available here for Structure and other types of links Since these culvert links are Structure type links there is no information to fill in on the Lateral Link Options section of the MIKE FLOOD Editor You can now run the simulation again to see what effect adding the culvert has by choosing Run gt Start Simulation from the top menu 4 THE COMPLETE SETUP Now that you ve created your own basic MIKE FLOOD model with two of the most common link types you may want to explore an expanded version of this same model area by opening the original example The larger model includes several more links including lateral links for the left and right overbanks of both the tributary branch TRIB and the main river branch RIVER and a second culvert called CULV2 This example file also includes two zero flow linkages which are here used to prevent flows from crossing from one side of a river to the other side in MIKE 21 without first passing through the MIKE 11 river channel network
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