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Hadian August 8, 2002 09:53

multi-layer shallow water or Sigma coordinate?
I want to predict the scour hole around bridge piers or bridge abutments using a math. model. In this way I searched the methods, Shallow water modeling can't do that because it dont consider downward and secoundary flows. I think that is better to use multi-layer or layer-integrated shallow water equation or sigma coordinate system to solve this problem, but I could not find any useful paper or text to help me aboute the best choice (which method) and its formulation and numerical schemes.


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