Table: "hw_2d_zone" and Table: "sw_2d_zone" in InfoWorks ICM

 Table: "sw_2d_zone"

Group Name	Field Name
Polygon Definition	zone_id
Polygon Definition	area
Polygon Definition	max_triangle_area
Polygon Definition	min_mesh_element_area
Polygon Definition	boundary_type
Polygon Definition	terrain_sensitive_mesh
Polygon Definition	max_height_variation
Polygon Definition	minimum_angle
Polygon Definition	roughness
Roughness Definition	roughness_definition_id
Roughness Definition	apply_rainfall_directly
Roughness Definition	apply_rainfall_subcatch
Roughness Definition	rainfall_profile
Roughness Definition	rainfall_percentage
Roughness Definition	mesh_summary
Roughness Definition	mesh_data
gen_prop (Imported Group)	N/A
user_prop (Imported Group)	N/A

Table: "hw_2d_zone"

Group Name	Field Name
15493	zone_id
15493	area
15493	max_triangle_area
15493	min_mesh_element_area
15493	mesh_generation
15493	boundary_type
15493	terrain_sensitive_mesh
15493	max_height_variation
15493	minimum_angle
15493	roughness
Roughness Definition	roughness_definition_id
15493	apply_rainfall_directly
15493	apply_rainfall_subcatch
15493	rainfall_profile
Infiltration Surface	infiltration_surface_id
Turbulence Model	turbulence_model_id
15493	rainfall_percentage
15493	mesh_summary
15493	mesh_data
gen_prop (Imported Group)	N/A
user_prop (Imported Group)	N/A

RDII and DWF Analyst for InfoSWMM and H2OMap SWMM, #SWMM5, #INFOWORKS_ICM

RDII and DWF Analyst for InfoSWMM and H2OMap SWMM from Robert Dickinson on Vimeo.

What Toilets And Sewers Tell Us About Ancient Roman Sanitation

What Toilets And Sewers Tell Us About Ancient Roman Sanitation https://t.co/eYB4ET3iI1 #ICMSE @InnovyzeAndrew pic.twitter.com/kSaG4n93Kd

— Innovyze (@Innovyze) November 30, 2015

Innovyze ‏@Innovyze  2m2 minutes ago

What Toilets And Sewers Tell Us About Ancient Roman Sanitation http://buff.ly/1Yxl1zp  #ICMSE @InnovyzeAndrew

Innovyze St Venant Solutions for InfoSewer, H20Map Sewer, #InfoSWMM, H2OMap SWMM and #InfoWorks_ICM and #InfoWorks_ICM_SE

This blog contrasts the St Venant Solutions for InfoSewerH20Map Sewer (1), InfoSWMM/H2OMap SWMM and ICM/ICM SE.

1.  Assumptions for the St. Venant Equations

The assumptions behind Lumped and Distributed Models along with the assumptions of the St Venant equations.  InfoSewerH20Map Sewer, InfoSWMM, H2OMap SWMM, SWMM5, ICM and ICM SE are all Distributed models for Unsteady flow.  InfoSWMM and InfoSewerH20Map Sewer have options for direct steady flow.  ICM and InfoSWMM can also use a quasi steady flow solution.   All of these Innovyze models use the Continuity Equation and Momentum equation for routing flows in links.  The numerical solution differs between the three Innovyze main  platforms:

• InfoSewer and H2OMap Sewer
• InfoSWMM,  H2OMap SWMM and SWMM 5
• ICM and ICM SE

Continuity Equation

Various Forms of the Momentum Equation

2.  Muskingum-Cunge for InfoSewerH20Map Sewer

The continuity (mass conservation) equation is:

where

x          =          distance along the pipe (longitudinal direction of sewer)

A          =          flow cross sectional area normal to x

y          =          coordinate direction normal to x on a vertical plane

d          =          depth of flow of the cross section, measured along y direction

Q         =          discharge through A

V          =          cross sectional average velocity along x direction

S0         =          pipe slope, equal to sin θ

θ          =          angle between sewer bottom and horizontal plane

Sf            =          friction slope

g             =          gravitational acceleration

t           =          time

β          =          Boussinesq momentum flux correction coefficient for velocity distribution

3. SWMM5, H2OMap SWMM and InfoSWMM

 

4. ICM and ICM SE

5. A common look at the Equations for ICM, ICM  SE. InfoSWMM and H2OMap SWMM

ICM 2D and InfoSWMM 2D Equations

ICM 2D and InfoSWMM share the same computational engine as described on the Innovyze Blog

As the scheme is an explicit solution it does not require iteration to achieve stability within defined tolerances like the ICM 1D scheme or the iterative solution in InfoSWMM.  Instead, for each element, the required timestep is calculated using the Courant-Friedrichs-Lewy condition in order to achieve stability, where the Courant-Friedrichs-Lewy condition is