Hi community buddies! I am currently working on my FYP which is about flood monitoring in Hong Kong. Since some areas in HK always suffer from storm surge during the typhoon, I am wondering can this software help to predict the flood effects? and what data is needed for the prediction? Also, I would like to fly UAV to collect photos of the project site and create a 3d mesh model by using ContextCapture. Is openflows possible to visualize the flooding effect with the mesh model? May I know how big the project site should be to study the flooding effect in the OpenFlows?
Hello Cherry, additionally to the information shared by Dr. Tom, a 3D mesh produced by ContextCapture fits perfectly in this kind of study. OpenFlows FLOOD needs, as one of the inputs, a Digital Surface Model, and its accuracy is very important for the 2D runoff calculations. Another input is the surface classification regarding its roughness and permeability, and FLOOD can work with existing GIS data that classifies the land-use, for example. You can try find this data for Hong Kong in the OpenStreets page.
I would like to share a video that illustrates the interaction between OpenFlows FLOOD, ContextCapture, and results rendering with LumenRT:
https://www.youtube.com/watch?v=TZEYO9TuCgE&list=PLLCOESNdmKSJGpTsFWeRjdWr2H-bBkBBD&index=14
Hope this information helps.
Douglas Miranda - Consultant
Thanks, Douglas~ Your explanation is so precise and useful! My subject site is a residential area where suffers from flooding frequently and only building top can be captured by flying UAV. Is it possible for ContextCapture to generate a DSM? And may I know does DSM good enough as the input data of the flood analysis? Also, do I need spot heights to enhance the accuracy of the DSM? Are there any constraints for the size of the site area when using OpenFlows Flood to predict the storm surge?
Hi,
Yes, ContextCapture can generate DSM files (see this video for a quick example) to be consumed by FLOOD.
Regarding DSM's accuracy, there are some best practices to follow during photo acquisition. This document tailored by Bentley's experts shows them.
The way how the data acquisition is made is very decisive to have a nice final production.
When you refer to size's constraint, is a maximum, minimum area?
regards,
Thanks, Douglas!! It is a very comprehensive response! I would like to ask the minimum area size for the flooding analysis~
Also, may I know where can I get the license of this OpenFlow Flood/ where to install?
Best,
Cherry
There is no minimum area constraint, but your DSM should cover the area to be analyzed.
If your company doesn't have yet a license, you can fill this form to receive a contact for Bentley's sales team. If so, you can access the site connect.bentley.com, where you can download the software.