Bentley Communities
Site
Search
User
Site
Search
User
Product Communities
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Sign In
All tags
pressure
Air Valves
Bentley WaterGEMS
Flow
HAMMER
headloss
Hydraulic Grade
periodic head-flow
Pipes
pressure head
PRV
pump
Pumps
SewerGEMS
Surge
surge tank
Transient
transients
valve
water distribution
Water Hammer
Water Modeling
WaterCAD
WaterCAD WaterGEMS HAMMER ArcGIS AutoCAD
WaterGEMS
WaterGEMS V8i
RE: How can I reduce my velocities in a watermain when the source is at 293m and the fire flow demand elevation is at 248m?
Craig Calvin
Hello Abe, You can place a PRV by selecting the valve dropdown in the layout toolbar and then choose PRV. Alternatively, you can go to the Tools menu, select Layout, then PRV. In the properties grid for the PRV, take a look at the Initial Settings…
over 7 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
WaterCAD 3D view
Igorich
Hello. Is there any way to get 3D view of WaterCAD model with pressure in every node showed as 3D cylinder or column sized depending on pressure value? It used to be in CyberNet water modelling software, but I can't find it in WaterCAD now. Thank…
Answered
over 8 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
what is the difference between ''pressure'' and ''pressure head''
Vanfa
Hello, what is the difference between ''pressure'' and ''pressure head'', according WaterCAD Best regards
Answered
over 9 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Darwin Pump Scheduler: Varying Pump Schedule
Benson
Hi! Is there a way to instruct Darwin Scheduler to use different target pressures at different times? For example, I want to set a high pressure during day and a lower pressure target at night. Right now, I have to resort to manually tweaking the optimized…
Answered
over 9 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Static pressure head calculation
Ed Pinheiro Lima
Hello, I am trying to find the static pressure in each node inside a network. Maybe I am not getting rigth the concept. All I have its the dynamic pressure At nodes wich is the hydraulic grade less the headloss but what i also want its the static pressure…
over 10 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Re: Connecting Pipes with different pressures
Mal Sharkey
The connection betwen the 8 in and 12 in pipes sounds pretty straightforward. I would guess the way you have it set up in the model is fine, so long as it is a close representation of what's actually in the ground. If you have zero flow through the check…
over 14 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Solvers - General Question - SewerGEMS
nkg2
Using: SewerGEMS V8i, Series 3, 08.11.03.83 1. I used to model lift stations with wet well with a short fat gravity pipe between the wet well and pump. Under the GVF-Convex solver, this is not longer the case. I am curious to know what is the reasoning…
over 10 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Colour Coding Pipe Pressure in Watergems
Lloyd Wallace
I am trying to create a colour coding in watergems. Similar to assigning diameter, velocity and flow colour codings to pipe elements, I would like to do the same indicating pipe pressure. I know that I can use a colour codings on nodes to do this but…
over 13 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Culvert Failure Analysis -- Which Program?
cfstoner
I am looking to model a 72-inch CMP storm drain failure due to excessive thrust I suspect. I want to simulate the pipe failure, sink hole formation, the water surfacing, and the subsequent scouring. It's a bit of a tall order and will require substantial…
over 12 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
pressure zone
hemma
please help me with perform and understand pressure zone how
over 10 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Hammer Analysis in Raw Water Transmission System
bwhite
I'm trying to evaluate the need for surge protection at new well locations in a raw water transmission system. I have a network of 6 wells all pumping to the water treatment plant. I'm new to Water Hammer and surge analysis so I'm just looking for some…
over 10 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Re: HOW MODEL COMBINATION AIR VALVES?
Jack Cook
If someone wants to model only the cascading flow downstream of an air-valve; that is, the transitional pressure to gravity type flow that might set up in a gravity trunk main or a sewer forcemain, they should take a look at the new WaterGEMS/WaterCAD…
over 14 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Hammer results interpretation
suminda
Hello I have modeled a raw water pumping line from a low to a high elevation using Hammer to compute up surge and down surge. My problem is even when using a hydronumatic tank i am getting negative pressures in the pressure envelope at the tail…
RWM_WITH SURGE FACILITIES-1.zip
over 11 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Re: Pressure and Pressure Head, what are the differences?
Jesse Dringoli
" Pressure head " is the " Pressure " divided by the specific gravity of your fluid, which you can change in the calculation options. So, they will only be equal if the specific gravity is 1.0 (using the same units for both, such as feet or meters) …
over 13 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Hazen-williams formula
Hoda Maki
Hello Akshaya Niraula, Thanks for your response to my previous questions, I would like o know about the coefficients applied in Hazen-williams formula by WaterGEMS, Can you pls tell about the differences of formula that WaterGEMS applies with…
over 10 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Re: negative pressures at junctions
Kim Davis
If the junctions are gravity fed, Tom's suggestions are still good but you need to change hte wording a bit. If the pressures are always negative, no matter what the demand, then check the HGL of the tank that feeds the zone, and check the elevation…
over 13 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Re: Pressure and Pressure Head, what are the differences?
Mal Sharkey
I have a slight correction to Jesse's post...pressure head is pressure divided by specific weight (not specific gravity). Specific weight of a fluid = density of the fluid x acceleration due to gravity. Pressure head is convenient because it is…
over 13 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
Re: Field pressure readings upstream and downstream of PRV. HGL or not?
Mal Sharkey
Normally the gauges will give you gauge pressure. You need to accurately measure the gauge's elevation, and add that to the pressure reading to get the HGL. Also, if the gauge measures pressure (e.g. in kPa), you will need to convert that to pressure…
over 13 years ago
OpenFlows | Water Infrastructure
OpenFlows | Water Infrastructure Forum
View related content throughout OpenFlows | Water Infrastructure
More
Cancel
<