TUFLOW 2D Hydraulic Structures: Difference between revisions

 

Therefore, the safest and strongly recommended approach with regard to establishing head losses and consequently flood levels, is to model the effects of such obstructions with form loss coefficients (applied to selected mesh cells) that have been derived from physical testing. This approach has been shown to provide the most consistent results across various mesh resolutions. It also has the added benefit that, by avoiding small cells in the mesh, it will provide much more efficient run times for flow solvers.

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Small scale obstructions to the flow, such as trees, poles, piers, etc. cause additional head losses along a flow path due to their drag characteristics. Historically, form loss (or drag) coefficients for various profile shapes have been determined as a function of Reynold’s number through experimental testing. <br>