MOHID Land – Walkthrough - Action · PDF fileACTION MODULERS MOHID Land Basics Walkthrough Walkthrough for MOHID Land Basic Samples using MOHID Studio Frank Braunschweig Luis

ACTION MODULERS

MOHID Land Basics Walkthrough

Walkthrough for MOHID Land Basic Samples using MOHID Studio

Frank Braunschweig Luis Fernandes Filipe Lourenço

October 2011

This document is the MOHID Land Basic Walkthrough. It contains explanation of

how to explorer some basic features of a preconfigured MOHID Land setup.

This document makes part of the MOHID Studio Documentation.

M O H I D L a n d – W a l k t h r o u g h

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Index

1 PREFACE 1

1.1 Copyright 1

1.2 Warranty 1

1.3 Further Information 1

2 MOHID WALKTHROUGH BASICS 2

2.1 Import the solution 2

2.2 Load Basic Data 5

3 EXAMPLE 1 – WATER ROUTING IN CHANNELS 8

4 EXAMPLE 2 – RAINFALL & INFILTRATION 20

5 EXAMPLE 3 – RAINFALL & INFILTRATION & SURFACE RUNOFF 27


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Index of Tables

No table of figures entries found.


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Index of Figures

FIGURE 2-1: START MOHID STUDIO 2

FIGURE 2-2: WELCOME SCREEN 3

FIGURE 2-3: ACCESS SOLUTION MANAGEMENT 3

FIGURE 2-4: SOLUTION MANAGEMENT WINDOW 4

FIGURE 2-4: OPEN SOLUTION 4

FIGURE 2-4: OPEN SOLUTION (STEP 2) 5

FIGURE 2-5: THE “DIGITAL TERRAIN” FOLDER 6

FIGURE 2-6: ADD DATA TO MAP WITH CONTEXT MENU 7

FIGURE 2-7: MAP WINDOW WITH LOADED DATA 7

FIGURE 3-1: CHANNEL ROUTING EXAMPLE 8

FIGURE 3-2: RUNNING THE SIMULATION 9

FIGURE 3-3: PROGRESS OF MODEL EXECUTION 9

FIGURE 3-4: MODEL “FINISH” DIALOG 9

FIGURE 3-5: MODEL “OUTPUT” DIALOG 10

FIGURE 3-6: MODEL “OUTPUT” DIALOG – STATUS MESSAGE 10

FIGURE 3-7: PLACES OF DISCHARGES 11

FIGURE 3-8: OPENING THE DRAINAGE NETWORK RESULTS (DOUBLE CLICK) 11

FIGURE 3-9: LOADING CHANNEL FLOW 12

FIGURE 3-10: LAYER WITH DTM AND DRAINAGE NETWORK DISABLED. 12

FIGURE 3-11: LAYER WITH DTM AND DRAINAGE NETWORK DISABLED. 13

FIGURE 3-12: SET LAYERS PROPERTIES. 14

FIGURE 3-13: EDITING STYLE PROPERTIES. 14

FIGURE 3-14: CHANGE RANGE OF THE STYLE. 15

FIGURE 3-15: TOGGLE LEGEND. 15

FIGURE 3-16: FULL SCREEN WITH RESULTS. 16

FIGURE 3-17: LOADING TIME SERIES RESULTS. 16

FIGURE 3-18: SELECTING TIME SERIES TO LOAD. 17

FIGURE 3-19: TIME SERIES RESULT WINDOW. 17

FIGURE 3-20: DISPLAY AT THE MAP THE LOCATION OF THE TIME SERIES. 18

FIGURE 3-21: TIME SERIES LOCATION IN THE MAP. 18

FIGURE 3-22: REMOVING A LAYER FROM THE MAP WINDOW. 19

FIGURE 4-1: EXAMPLE 2 – WATERSHED WITH SOIL. 20

FIGURE 4-2: LOADING TIME SERIES WITH RAIN INFORMATION 21

FIGURE 4-3: SELECTING THE PRECIPITATION RATE SERIES 22

FIGURE 4-4: TWO SMALL RAIN EVENTS 22

FIGURE 4-5: LOADING INFILTRATION RATE INTO THE SAME GRAPH WINDOW 23


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FIGURE 4-6: COMPARING PRECIPITATION RATE AND INFILTRATION RATE 23

FIGURE 4-7: LOADING THE RELATIVE WATER CONTENT 24

FIGURE 4-8: INCREASE OF SOIL WATER CONTENT DURING RAIN EVENTS. 25

FIGURE 4-9: CHANNEL FLOW GENERATED BY THE TWO RAIN EVENTS 25

FIGURE 4-10: CHANNEL FLOW GENERATED BY THE TWO RAIN EVENTS (MAPS) 26

FIGURE 5-1: EXAMPLE 3 – HEAVY RAIN. 27

FIGURE 5-2: PRECIPITATION VS. INFILTRATION RATE 28

FIGURE 5-3: LOADING SURFACE RUNOFF 29

FIGURE 5-4: LOADING SURFACE RUNOFF (SECOND STEP) 29

FIGURE 5-5: CONFIGURING THE OVERLAND FLOW LAYER 30

FIGURE 5-6: OVERLAND FLOW 31


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1 Preface

1.1 Copyright

This document refers to MOHID Studio, priority software protected by copyright. All

rights are reserved. Copying or other reproduction of this manual, or related documents,

is prohibited without prior written consent of Action Modulers, Consultores de

Segurança (Action Modulers).

MOHID Water Modelling System is priority software of the Technical University of

Lisbon.

1.2 Warranty

The warranty given by Action Modulers is limited as specified in your Software License

Agreement. Please note that numerical modeling software programs are very complex

system and may not be free of errors, so you are advised to validate your work. Action

Modulers shall not be responsible for any damage arising out of the use of this

document, MOHID Studio, MOHID Water Modelling System or any related program or

document.

1.3 Further Information

For further information about MOHID Studio please contact:

Action Modulers, Consultores de Segurança Lda.

Rua Cidade de Frehel, Bloco B, Nº 12 A

2640-469 Mafra, Portugal

Tel.: +351 261 813 660

Fax: +351 261 813 666

E-mail: [email protected]

Web: http://www.actionmodulers.com



2 MOHID Walkthrough Basics

This walkthrough example helps you to analyze some basic features of MOHID Land,

using MOHID Studio.

First you will import the preconfigured solution and then run and explore different

scenarios.

2.1 Import the solution

Please perform the following steps to import the solution with all sample data files.

Start MOHID Studio.

Figure 2-1: Start MOHID Studio

At the “Welcome Screen” select “Create a new Workspace”. Call it “MOHID Land

Walkthrough Basics”.



Figure 2-2: Welcome Screen

At the main menu, go to Project -> Solution -> Manage

Figure 2-3: Access Solution Management

From the Solution Management Window, select “Import”.



Figure 2-4: Solution Management Window

In the “Solution Import Window”, “Project File Name” browse for the ZIP file called

“MOHID Land Walkthrough Basics.zip” and in the “Destination Directory” choose any

empty directory (e.g. My Documents\MOHID Studio Projects\MOHID Land

Walkthrough Basics”).

Hit the “Import Button”. When finished importing, close the window.

At the main menu, go to Project -> Solution -> Open.

Figure 2-5: Open Solution

Select the solution called MOHID Land Walkthrough Basics.



Figure 2-6: Open Solution (step 2)

2.2 Load Basic Data

Next step will help you to visualize the data for which the example has been prepared.

Please perform the following steps:

Go to the “Explorer” and expand the solution until you can see a folder called “Digital

Terrain”. Select it.



Figure 2-7: The “Digital Terrain” Folder

From “Data Files”, select the file DTM_Laje_ND.dat. Right click it and select “Add to

Map”.



Figure 2-8: Add data to Map with context menu

At the next window, just hit “OK”.

From “Data Files”, select the file Drainage Network.dnt. Right click it and select “Add

to Map”. Hit just ok on the next screen.

Switch to the Map Window. You should see the Digital Terrain Model and the channel

network.

Figure 2-9: Map window with loaded data



3 Example 1 – Water routing in channels

This example shows the feature of basic flow routing. Over a impermeable watershed

(no soil -> No infiltration), three discharges are imposed into the channel network at the

upper part of the watershed. Channel routing of discharged water is simulated.

Go to the Explorer and select the simulation “Impermeable Watershed with channel

flow”.

Figure 3-1: Channel Routing Example

From the Main Menu select Project-> Execute Models -> Run Now



Figure 3-2: Running the simulation

In the lower left corner you can see the progress of the simulation.

Figure 3-3: Progress of model execution

Wait for the model to finish (a small popup window appears). Hit YES to check the

status of the simulation.

Figure 3-4: Model “Finish” dialog

In the model output window scroll down until the end.


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Figure 3-5: Model “Output” dialog

Check for the status message which tells that the model did finished successfully.

Figure 3-6: Model “Output” dialog – Status Message

Close the “Model Output” Window.



Go to the folder General Data and select the file “Discharge Location.xml”. Right click

and add to map. Switch to the map window and you will see places of discharges.

Figure 3-7: Places of discharges

Go back to the explorer. From the HDF Result file list, double click the file called

Drainage Network_1.hdf5, which contains results of the channel network.

Figure 3-8: Opening the Drainage Network results (double click)

In order to load flow results, at the next window simply hit OK



Figure 3-9: Loading channel flow

Switch to map. Disable the layers of the DTM and Drainage Network, by un-checking

them.

Figure 3-10: Layer with DTM and Drainage Network disabled.



Using the timer you can loop through the results. You should see the water flowing

from the discharge locations, downstream.

Figure 3-11: Layer with DTM and Drainage Network disabled.

Double click on the layer (in the list box) called channel flow, so you can change the

properties of the layer. In the window which appears, check the box “Legend” and write

“Channel Flow [m3/s]” in the legend box”.



Figure 3-12: Set layers properties.

Click on the button “Style -> Edit”.

Figure 3-13: Editing style properties.

Set the minimum and maximum values to 0 and 0.5, respectively.



Figure 3-14: Change range of the style.

Hit OK and close to close the windows. Use the Legend Toggle button, to show the

legend.

Figure 3-15: Toggle legend.

Now you should see the results on the screen with the legend.



Figure 3-16: Full screen with results.

Go back to the explorer. Select the simulation “Impermeable Watershed”. Under the

time series result files list, select a file called “channel flow”. Double click it.

Figure 3-17: Loading time series results.

A window with time series written by the model appears. Hit “Check all” to load all

time series.



Figure 3-18: Selecting time series to load.

Hit “OK” to display the selected time series as graph.

Figure 3-19: Time series result window.



From “General Data” select the file “Node Time Series Location.xml”. This will add a

file where time series have been written to the map. Select add to map.

Figure 3-20: Display at the map the location of the time series.

You might want to disable the Discharge Location, so you can only see the places where

time series have been written. The three channel flows presented above correspond to

the three location presented in the map.

Figure 3-21: Time Series Location in the map.

Before continuing with the next example, just remove the layer called “channel flow”

from the list of layers. You can do this by selecting the layer and choose remove

“remove” from the context menu. Also close all opened graph windows.



Figure 3-22: Removing a layer from the map window.



4 Example 2 – Rainfall & Infiltration

The next example is based on the same watershed as the previous example, but in this

configuration, the porous media module is activated and real meteorological conditions

are provided. Rainfall should infiltrate into soil.

Go to Explorer and select the simulation “Watershed with soil”.

Figure 4-1: Example 2 – Watershed with soil.

Run the example in the same way you did for example 1:

1. Select Run Now from the Main Menu

2. Wait for the simulation to finish

3. Check the status of the model execution.

As mentioned previously, this example contains soil, so precipitation infiltrates into the

soil.

We can analyze model result time series to verify model behavior. Time series with

extension *.srb contain general basin data, time series with extension *.srp contain soil

property data.



To see the amount of rain, select the “Watershed with Soil” simulation and double click

the file “25_57_9.srb” file in the list of time series results.

Figure 4-2: Loading time series with rain information

On the next window, select the “Precipitation Rate” series and hit OK to show it in form

of a graph.



Figure 4-3: Selecting the Precipitation Rate series

The graph window shows that there are two small rain events.

Figure 4-4: Two small rain events

Go back to the explorer and double click again on the same file (25_57_9.srb). This

time, select the infiltration rate and select “Add to exiting window”.



Figure 4-5: Loading infiltration rate into the same graph window

With this configuration, the graph shows a comparison between the precipitation rate vs.

infiltration rate.

Figure 4-6: Comparing precipitation rate and infiltration rate



We expect that the water which infiltrates increases the soil water content (soil

moisture). We can verify this by loading the time series of the porous media properties.

Just double click on the file “25_57_9.srp” and then select the series “relative water

content”.

Figure 4-7: Loading the relative water content

The resulting graph shows that the relative water content increases during the rain

events.



Figure 4-8: Increase of soil water content during rain events.

The water which does not infiltrate will pond on the surface of the soil. It can either

infiltrate over time, runoff as overland flow or “drop” into a channel. The time series

which has been analysed is located just over a channel network (it’s the middle one of

“Figure 3-20: Display at the map the location of the time series.”). So water from this

cell will result in channel flow.

By double clicking the channel flow time series (channel flow.srn), and selecting one of

the series, you can see channel flow generated by this specific simulation.

Figure 4-9: Channel flow generated by the two rain events



To see all this features in form of map, go back to the explorer, select the simulation

“Watershed with Soil” and double click on the Drainage Network.hdf5 file. Load the

channel flow layer (see previous example). Using the timer, you can step through the

results and see the channel flow generated from the two small rain events.

Figure 4-10: Channel flow generated by the two rain events (maps)

Before continuing with the next example, just remove the layers called “channel flow”

from the list of layers. You can do this by selecting the layer and choose remove

“remove” from the context menu. Also close all opened graph windows.



5 Example 3 – Rainfall & Infiltration & Surface

Runoff

The next example is a continuous simulation from the previous example, but this time a

much stronger rain event will occur.

Go to Explorer and select the simulation “Heavy Rain”.

Figure 5-1: Example 3 – Heavy Rain.

Run the example in the same way you did for example 1 and 2:

1. Select Run Now from the Main Menu

2. Wait for the simulation to finish

3. Check the status of the model execution.



As mentioned previously, this example contains soil, so precipitation infiltrates into the

soil. The precipitation intensity is set so high that it exceeds infiltration capacity of the

soil, so not all water will infiltrate. Excess water will result in surface runoff.

After the simulation finished, analyse the time series like in example 2

Next figure shows the comparision between precipitation rate and infiltration rate. As

you see, precipitation exceeds largely infiltration capacity.

Figure 5-2: Precipitation vs. Infiltration Rate

From the HDF results load the channel flow (Drainage Network 6.hdf5), as described in

the previous examples.

To load the overland flow (surface runoff), select (not double click) the file

RunOff_6.hdf5 in the list of HDF result files. Click on the small icon with arrows next

to the list, as shown in the next figure.



Figure 5-3: Loading surface runoff

In the next window, just hit OK.

Figure 5-4: Loading surface runoff (second step)



Switch to the map window and select the layer called flow [0] (…). Double click it to

configure the layer.

Configure the layer as shown in the next figure. Then close to go back to the map.

Figure 5-5: Configuring the overland flow layer

By using the timer and the zoom functions, you can check the overland flow pattern, as

shown in the next figure.



Figure 5-6: Overland flow

When you step through the results, you will first see the overland flow, as response to

the heavy rain event. Next you will see some arrows which appear along the channels.

This always occur when the channel capacity is exceeded and the channel gets adjacent

areas to the channel get flooded.