I am trying to model sediment transport in a tidal river over a tidal cycle. I am using a critical erosion shear stress of 1 N/m2 and a deposition shear stress of 0.001. Settling velocity is 0.2 m/s and as recommended by the software, roughness is 0.001. Density is 500. So I am using pretty conventional values.
The model is calculating bed shear stress values that oscillate between 0.1 and 8 N/m2. However, the calculations for bedmass and net deposition accumulation result in values in the order of E+004 and E+006 g/m2. The expected results should be in the order of E+1.
I have been going over the basics of sediment transport and played with the settling velocity, the roughness, the range of difference between deposition and erosion shear stress without any success.
Has anyone experienced a similar problem before? Any ideas of what could be causing this problem? or how else could I examine the results to find the cause?
Thanks you
Regards
Vic
