Underdrain research in LIDs
As I am writing this I have spent almost a month in CHI’s office in Guelph getting my master thesis project off the ground.
The project aims to somehow improve how SWMM models the underdrain in LIDs. I will soon have an introduction uploaded as a research paper here on openSWMM.
I have found several research papers (and posts here on openSWMM) mentioning the lack of physical representation of some processes in LIDs that relate to the underdrain flow. I have also looked at design manuals which often suggest design practices that SWMM cannot be configured for without workarounds.
I have already been discussing the topic with CHI’s staff as well as Ryan Winston and Jay Dorsey who has taken the time to share insights from their research on LIDs. Now I am asking you for additional input.
The following is what I have found so far:
All this being said, I am aware that increased complexity can increase computation time. However, I believe that there should still be room for improvements and I am all ears to your opinions on what you think is important or more applicable to SWMM.
I have access to some data to calibrate with but the more the merrier, so if either you are able to share LID field measurements that would be greatly appreciated.