Hello, I think in terms of ...
Published by Muhammad Alfalah Fauzi, CFD Engineer Intern at Institut für Wasserbau und Technische Hydromechanik (IWD) - TU Dresden
Hello,
I think in terms of model approach, for some type of rapid flooding such as flash flood, a lumped hydrological model coupled with rainfall-runoff model would be one of the best approach. The reason is that with very small lead time, a more sophisticated approach such as hydrodynamic model will consume a lot of time to run. You can take a look at BROOK90 or GLOBAL BROOK90 lumped hydrological model as an example. One of the latest development is that it uses global climate data taken from satellite as well as global circulation model to cover area with less spatial data. Another example is that in Saxony, Germany, where I did some modeling related to those lumped model, there is also “extruso” framework which provide the regional model as well with higher resolution of spatial data.
On the other hand, for a long lead time flood event such as plain flood, a 2D hydrodynamic model is sufficient to provide inundation extent, etc. Various software is available such as Mike11, HEC-RAS, Delft 3D, etc.
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The depth-damage-function, damage potential analysis and damage modeling (with the help of land cover, land use and building taxonomy) can then later be developed.
Published by Muhammad Alfalah Fauzi, CFD Engineer Intern at Institut für Wasserbau und Technische Hydromechanik (IWD) - TU Dresden