Autodesk Technologist with Information about Stormwater Management Model (SWMM) for watershed water quality, hydrology and hydraulics modelers (Note this blog is not associated with the EPA). You will find Blog Posts on the Subjects of SWMM5, ICM SWMM, ICM InfoWorks, InfoSWMM and InfoSewer.
Using RDII or RTK or I&I Hydrographs in #INFOSEWER
Using RDII or RTK or I&I Hydrographs in #INFOSEWER – InfoSewer from Innovyze also has the features to model Infiltration/Inflow from Rainfall Events into a Sanitary or Combined Sewershed. There are three parameters, R, T, and K, a Sewershed Area, and a fraction division that divides up the overall R to the individual R's.
Let's consider the following example:
The overall R (percent of Rainfall that turns into Rainfall Dependent Infiltration Inflow): 10%
R1, R2, and R3 are the individual R's.
The fraction division for R1, R2, and R3 is 0.2, 0.4, and 0.4 respectively.
Now, we can calculate the individual R's as follows:
a. R1 = 0.2 * 10 / 100 = 0.02
b. R2 = 0.4 * 10 / 100 = 0.04
c. R3 = 10 - 0.02 - 0.04 = 0.04
So, the individual R's are R1 = 0.02, R2 = 0.04, and R3 = 0.04.
1UH has an overall R (percent of Rainfall that turns into Rainfall Dependent Infiltration Inflow)
a. R1 = Percent R1 * R / 100
b. R2 = Percent R2 * R / 100
c. R3 = R – R1 – R2
Figure 1 shows the Rainfall for InfoSewer
Figure 2 shows the result of using 100 Percent R1, R2 or R3 at a node
Figure 1 - Rainfall for RTK in InfoSewer
Figure 2 - Resultant UH for Nodes with only R1, R2 or R3.
Balaji Ideas for conducting conferences in General from his Twitter Feed
The answer may be a flipped conference, by analogy to a flipped classroom. In a normal classroom, you attend lectures as a group and do homework by yourself. But in a flipped classroom, you watch lecture videos by yourself and discuss homework in a group.
Also, if all talks are designed from the beginning to be posted online, you can have them each be limited to 140 seconds. Post them individually and as a collection. Anyone can then catch up on 10 talks in about 20 minutes. And they may buy a ticket to come in person next year…
ICM InfoWorks by Autodesk Innovyze is a complicated program with many parts and a state-of-the-art 1D and 2D engine. One way to deal with the complexity is to automate complicated or repetitive tasks with SQL and Ruby. In this blog, we will use SQL and Ruby to automate the process of assigning Watershed outlet nodes for ICM SWMM Networks.
What are we hoping to achieve by Combining Ruby with ICM SWMM Networks?
We want to find the outlet ID for the closest node to a Subcatchment in an ICM SWMM Network.
Ruby will use the Geometry tools of ICM to find the closest node.
What is an ICM SWMM Network? It is a Network in ICM that uses SWMM 5.1.015 data and most/many of the tools of the ICM GUI. ICM of course also has InfoWorks Networks.
What am I showing in the Post header image? Autodesk has Subscription versions of ICM (Standard and Ultimate), but I am showing the Thales versions of ICM which are both 32bit and 64bit, and comingled ICM InfoWorks and ICM SWMM Networks. I also use InfoWater Pro (Arc GIS Pro) and InfoSWMM which uses Arc Map and has a direct import into an ICM SWMM Network.
ICM SWMM Network Data in the Autodesk Innvovyze ICM GUI
Why use Ruby for InfoWorks ICM SWMM Networks?
Why Ruby - it is part of ICM and easy to understand with a lot of Modeling features. It is part of Network Menu Commands. You can use a new Script or a past used script so it is easy to find.
What is an InfoWorks ICM SWMM Network?
ICM SWMM uses the SWMM 5.1.015 engine and has most of the UX features of ICM InfoWorks Networks including 2D. A different 1D network and solution of course.
What is an example of Ruby Scripts?
net=WSApplication.current_network
puts 'Running ruby for SWMM Networks'
nodes=Array.new
net.row_object_collection('sw_node').each do |n|
if n.selected?
temp=Array.new
temp << n.id
temp << n.x
temp << n.y
nodes << temp
end
end
net.transaction_begin
net.row_object_collection('sw_subcatchment').each do |s|
if s.selected?
sx = s.x
sy = s.y
nearest_distance = 999999999.9
(0...nodes.size).each do |i|
nx = nodes[i][1]
ny = nodes[i][2]
n_id = nodes[i][0]
distance=((sx-nx)*(sx-nx))+((sy-ny)*(sy-ny))
if distance < nearest_distance
nearest_distance=distance
s.outlet_id = n_id
end
end
else
puts 'You forgot to select anything'
end
s.write
end
puts 'Ending ruby'
net.transaction_commit
Where can I find the Ruby Scripts?
Innovyze has a Github that you can use to copy or download dozens of Ruby and SQL scripts. If registered on our Portal, you can find Salesforce Knowledge Base articles and many other sources of help. at https://github.com/innovyze/Open-Source-Support. SQL and Ruby functionality exist to be used by users with knowledge of programming languages. We provide resources to assist customers in building their scripts through the existing self-help frameworks, including documentation on Ruby, help files, and more recently a wealth of GitHub examples - link above.
How do I use Ruby Scripts?
Easy - Go to the Network Menu and choose Run Ruby Scripts or Recent Ruby Scripts
Do I need to use SQL?
It helps if you have a simple global grid command and you do not want to edit the grid. Here is a simple SQL that sets the SWMM Network OUTLET_ID to blank. You can save the SQL on the project explorer window and click to activate the dialog.
What does each line of the Ruby Script represent and what does it perform for the ICM SWMM Network?
The annotated snippet below shows the steps used in the script. ICM SWMM Networks are sw_ whereas ICM InfoWorks Networks are hw_ (for reference)
net=WSApplication.current_network
# Opens the current network on the ICM Geoplan
puts 'Running ruby for SWMM Networks'
# Tell the user some actions are being done by the script
nodes=Array.new
# Makes a new array - uses swmm nodes or sw_node
net.row_object_collection('sw_node').each do |n|
if n.selected?
temp=Array.new
temp << n.id
temp << n.x
temp << n.y
nodes << temp
end
end
# Save the id, x coordinate, y coordinate to the nodes array of SELECTED Elements
net.transaction_begin
# start finding the nodes to set to the outlet of the subcatchment
net.row_object_collection('sw_subcatchment').each do |s|
# use swmm subcatchments or sw_subcatchment
if s.selected?
# use the SELECTED Elements
sx = s.x
sy = s.y
# use the centroid of the subcatchment
nearest_distance = 999999999.9
(0...nodes.size).each do |i|
nx = nodes[i][1]
ny = nodes[i][2]
n_id = nodes[i][0]
# for each node find the x and y coordinates
distance=((sx-nx)*(sx-nx))+((sy-ny)*(sy-ny))
# compute the node to subcatchment distance
if distance < nearest_distance
nearest_distance=distance
s.outlet_id = n_id
# We have found the closed node and set the outlet ID to the node ID
end
end
else
puts 'You forgot to select anything'
# message to remind ourself we forget to select any nodes or subcatchments
end
s.write
end
puts 'Ending ruby'
# Tell the user some actions were by the script
net.transaction_commit
# commit our new found ID to the current network (ICM SWMM Network)
I'm attaching a YouTube video that explains the previous stages. It is for ICM SWMM Networks, which utilizes SQL to remove or set the SWMM Subcatchment's OUTLET ID to Null and Ruby to determine the closest node to the Subcatchment's centroid and assign it as the OUTLET ID. I made a mistake and ran Ruby without using ICM to pick any items, which resulted in nothing being done, but at least I received a notice about not choosing any components.
