1D Pits: Difference between revisions

== UK Water Industry Research (UKWIR) Inlet Capture Tool ==

In 2023, the UK Water Industry Research (UKWIR) Limited released the Modelling Sewer Inlet Capacity Restrictions Report [https://ukwir.org/modelling-sewer-inlet-capacity-restrictions/ Modelling Sewer Inlet Capacity Restrictions Report]. The main aim was to develop a sewer modelling methodology to enable the representation of inlet inflow restrictions, focusing on the development of a new 1D model approach to provide greatermore accurate model sewer flooding predictions. The new modelling approach has been devised by combining the findings from thea literature review and the development of semi-empirical relationships from academic studies which investigated factors affecting inlet capacity, by utilising the modelling functionality of InfoWorks ICM. The new approach allows for 2 types of gully response reflecting 2 flow conditions/equations: Subcritical flow on a shallow road gradient and Supercritical flow on a steep road gradients. TheseA threshold of 0.02 is used to distinguish between shallow and steep road gradients. The reported equations can be used for the production of input inlet curves for TUFLOW 1D pit inlet modelling.

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