Intake shape and boundary-related considerations in the operation and design of storm-sewer drop structures

Question

Ref: https://communities.bentley.com/products/hydraulics___hydrology/f/haestad-hydraulics-and-hydrology-forum/142801/bridge-drainage-outlet-velocity-calculation-in-close-vertical-drainage-system/ 
 "Intake shape and boundary-related considerations in the operation and design of storm-sewer drop structures" by A. Auckland, I. Nistor, R. Townsend. Canadian Journal of Civil Engineering, 2009, 36(11): 1825-1834, https://doi.org/10.1139/L09-114 
 Abstract: This paper presents the results of an experimental investigation into the hydraulic efficiency of a vertically oriented water intake. Under low submergence conditions, the operation of such an intake is affected significantly by the formation of surface vortices, which result in significant flow reduction and the downstream entrainment of air and swirl. The experimental work considered the fact that vortex formation is governed by the geometrical characteristics of the intake, including the diameter, local shape, submergence, surrounding boundary, etc, and the velocity distribution in the approaching flow. Therefore, an experimental study was conducted to investigate the influence that the local shape and the proximity to nearby boundaries have on the hydraulic performance of a vertical water intake. The results of this experimental investigation will hopefully lead to a better understanding of the phenomena governing the flow in such structures and to the elaboration of improved engineering design guidelines. 
 Bentley could either incorporate this procedure into a newer version of their program, or you could provide a rating curve to your model based on separate spreadsheet calculations using the above procedure.

Craig Calvin · Answer

It appears your file didn't upload. Please try uploading it again or use an alternate method from the following link. 
 https://communities.bentley.com/help/w/be_communities_help/32255/sharing-hydraulic-model-files-on-the-haestad-forum 
 If you know the rating curve you want to use for an inlet, you can apply it using the inlet catalog. 
 
 Go to: Components > Catalog > Inlet Catalog 
 Select the New icon. 
 Set Inlet Type to "Gutter Depth vs. Captured Flow" or "Flow to Inlet vs. Flow Captured".

Jesse Dringoli · Answer

Hi Brian, thank you for the feedback and suggestion. I have split this into a separate forum discussion. 
 As Craig mentioned, SewerGEMS, CivilStorm and StormCAD have the flexibility to model custom inlet performance curves, which could be used to model your suggested routine (if we understand correctly). IWe have enhanced the following article with information about this, and a link to an article with more specifics on the Gutter Depth s. Captured Flow inlet type: 
 How to model a bridge scupper