Siphon Modeling in InfoSewer and Arc Map
Here is at typical view of a siphon in InfoSewer, the rising links have a d/D of 1 and the dropping links typically have a d/D value less than 1. The q/Q for the rising links is based on the slope and … Read the rest
1. Volume
2. Level
3. Discharge
4. Inflow
5. Time
SWMM 4 and SWMM 5 St. Venant Solutions Contrasted
1. Compute at time t+delta t the values of dQ/dt for the Links and dH/dt for the Nodes from the properties at time t
2 Iterate at least 2 times until either all nodes and links are converged or a … Read the rest
InfoSewer Inflow Control for a PUMP
You can control the pumps in InfoSewer and H2OMap Sewer by using a Pump Control which will control the pump based on:
1. Volume
2. Level
3. Discharge
4. Inflow
5. Time
If you use a By Inflow control the pump speed of the … Read the rest
InfoSewer Maximum Number of Segments Sensitivity
The three Run manager parameters, Maximum Number of Segments, Minimum Travel Distance and the Minimum Travel Distance in InfoSewer and H2OMAP Sewer affect the shape and flow attenuation of the flow in a link. The effect of decreasing the Minimum Travel Distance is … Read the rest
Singapore - Catching Every Drop of Rain
The source of the map of the rivers of Singapore is the Singapore PUB
As a small island that doesn't have natural aquifers and lakes and with little land to collect rainwater, Singapore needs to maximize whatever it can harvest.
Currently, Singapore uses … Read the rest
Subject: Non Linear Term in the Saint Venant Equation of SWMM 5
The flow equation has six components that have to be in balance at each time step:
1. The unsteady flow term or dQ/dt
2. The friction loss term (normally based on Manning's equation except for full force mains),… Read the rest
Subject: Successive under-relaxation for the SWMM 5 Dynamic Wave Solution
SWMM 5 uses the method of Successive under-relaxation to solve the Node Continuity Equation and the Link Momentum/Continuity Equation for a time step. The dynamic wave solution in dynwave.c will use up to 8 iterations to reach convergence before moving
The time flooding in SWMM 5 is pretty simple:
1. It is the sum of all time steps in which excess flow is coming out of the top of the manhole or
2. If you are using the ponding option then it is the time the surface pond has more
How to Use the SWMM 5 Excel Tool with InfoSewer CSV Files
1. Export Link and Manholes in InfoSewer for your current Scenario to CSV files,
2. Set up the Excel Add on for SWMM 5 by using the command Tools, and Configure Tools (see below)
3. Run SWMM… Read the rest
Subject: How to Have both Depth and Elevation for the Node Rim Elevation in InfoSWMM
If you turn on store Absolute Junction Rim option then the Rim Elevation = Invert Elevation + Maximum Node Depth will be shown in the DB Table Junction Hydraulic Modeling Data and the Attribute Browser … Read the rest
Note: How to Use the Arc Map Editor in InfoSWMM
Step 1 is to use the Edit Feature for example the Subcatchment layer to bring up the Arc Map Editor Tool.
Step 2 is to use the Reshape Feature tool or Vertex tools to bring together mis matched Subcatchment Boundaries
Twitter besides being 140 characters of greatness has many third party tools such as Tweet Topic Exploreer which allows you to see visually your Tweets by subject, http://tweettopicexplorer.neoformix.com/#n=rdickinson I found it handy to see the interrelationships of my tweets to each other and to the industry (Figure 2 and Figure … Read the rest
Subject: How to use the Flow Splitter in InfoSewer for Dendritic Networks
InfoSewer, which is an extension in Arc Map, does need to have slit split defined where gravity mains merge together to determine the amount of flow in each of the downstream conduits (Figure 1). The options for … Read the rest
1. Make sure that the Flow Units in InfoSWMM Run Manager match
Subject: 1000 Year Simulation with Rainfall
Arc Map If Statements for Showing Flooding in InfoSWMM
You can use a combination of the Map Display in InfoSWMM and the Arc Map Label Properties to show the Maximum Ponded Volume at a node during amInfoSWMM simulation.
The label function in VBSCRIPT to show just non zero flooded … Read the rest
