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Flow

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Minimum Pipe Length

The mimimum pipe length in Flow is currently set to 1m. Where modelling junctions and connections there may be less than 1m between the junctions. Please revise the minimum length to around 300-500mm.
Ian George about 2 years ago in Flow 1 👷🏽‍♀️Promoted

Highlight if the Colebrook-White or the Manning's equations is being used by highlighting (or greying out) the "ks (mm)" or "n" in the link details.

It seems that if a pipe has a swale upstream then the pipe uses the Manning's equations to compute flows etc, but if it has nothing upstream or a pipe upsteam then it uses the Colebrook-White equations. This means that on the same storm water syst...
James Berry 2 months ago in Flow 0 📋Registered

Total Volume of Structure

Finding total volume of a structure would be useful (similar to the volume Static Tool in MicroDrainage).At present the only way to do it is look at the storage tab and hover over a depth in the storage structure section and it shows the depth and...
Ian George about 2 years ago in Flow 0 👷🏽‍♀️Promoted

When changing gradients on pipe, automatically changing the downstream pipe to level soffit rather than having to change invert level manually.

No description provided
Tom Fox almost 2 years ago in Flow 0 👷🏽‍♀️Promoted

Infiltration volume

Add a column called ‘Infiltration Volume’ to the simulation results table which indicates the total volume of water infiltrating into the ground at the upstream manhole during the selected storm.
Guest 9 months ago in Flow 0 👷🏽‍♀️Promoted

Pipe Selection/visibility in output

There is often need to hide certain pipes from the final output. Either they are dummy pipes that have no relation to the final layout or they are areas outside the specific design network that do not need to be included in the report. Microdraina...
Guest about 1 year ago in Flow 0 👷🏽‍♀️Promoted

Urban Creep

Global urban creep isn’t helpful. We have a process of assessing UC on a pipe-by-pipe basis. We separate the areas that UC should be applied to and areas such as flats the highway that don’t need it. If global UC is applied, then you are adding 10...
Ben Stoodley about 1 year ago in Flow 1 👷🏽‍♀️Promoted

Infiltration Half Drain time calculations

We have recently been challenged by Wiltshire LLFA regarding half drain times. As I understand it, Flow calculates the half drain time to CIRIA 156 which gives a significantly longer half drain time than the BRE365 method that Micro Drainage uses....
Ben Stoodley 7 months ago in Flow 1 👷🏽‍♀️Promoted

Include check dam option in swales

Check dams are commonly used in swales to temporarily pond runoff to increase pollutant retention and infiltration and decrease flow velocity, but Flow does not have an option to model them. As they are a recognised SuDS feature, and commonly used...
David Collins about 2 years ago in Flow 2 👷🏽‍♀️Promoted

Manhole Schedule Degree Reference

We’ve noticed a significant increase in the use of precast manholes across nearly every development we’re involved in. The companies supplying these typically issue drawings where each incoming pipe is referenced by its angle relative to the outgo...
Guest about 2 months ago in Flow 0 📋Registered