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BASEMENT
Basic Simulation Environment for computation of environmental flow and natural hazard simulation
Laboratory of Hydraulics, Hydrology and Glaciology (VAW)
ETH Zurich
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#1 2020-09-15 12:12:44

Alyssa
User
From: Aix-en-Provence, France
Registered: 2019-10-28
Posts: 41

Grain size distribution of bedload

Hi

Is there a way to know the grain sizes distribution of the bedload? To know the average grain size of what is being transported through the reach. I could only find the grain size of the layers per cross section but for bedload I can only see volume.

thanks
Alyssa

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#2 2020-09-16 12:59:06

Alyssa
User
From: Aix-en-Provence, France
Registered: 2019-10-28
Posts: 41

Re: Grain size distribution of bedload

I guess it can be done by using the relative volumes which are given in the out.dat file for a specific Q.
So  (bedload flux for Dx)/(bedload flux total) we get a % which we can then relate to the grain size.

I don't think there is an output type that can do that immediately?

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#3 2020-09-17 08:46:52

Matteo Facchini
Developer
From: Trento
Registered: 2014-09-05
Posts: 281

Re: Grain size distribution of bedload

Nope, there is not.
The "matlab" output is a short version of the .out file. There you have the % in the active layer and in the sublayer.
With a python script you could read, extract and calculate whatever you need from the out file wink
Cheers,
Matteo

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