TELEMAC-MASCARET Forum: wrong coefficient in bedload_engel.f and bedload_engel

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TOPIC: wrong coefficient in bedload_engel.f and bedload_engel_gaia.f

wrong coefficient in bedload_engel.f and bedload_engel_gaia.f 1 year 9 months ago #41981

Svensmolders
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Hi,

I noticed the coefficient of the variable CENGEL (in subroutine bedload_engel.f) was changed from 0.1 to 0.05 in version V7P3 of SISYPHE and this was copied also to GAIA.

I see the confusion with the coefficient in the original Engelund and Hansen formula, but the coefficient of the CENGEL variable is not the same coefficient. In order to get the original Engelund and Hansen formula the coefficient of CENGEL needs to be changed back to 0.1.
At the moment all bedload tranport calculations using Engelund and Hansen formula underestimate the transport by a factor 2 because of this coefficient value change!

please check

best regards,
Sven

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wrong coefficient in bedload_engel.f and bedload_engel_gaia.f 1 year 9 months ago #41983

kopmann OFFLINE Senior Boarder Posts: 106 Thank you received: 65	Hi Sven, this is funny, today I found an email from Clemens where he also noticed this and I checked it with the original paper from Engelund. I am pretty sure that it must be 0.1 as you reported. Best regards, Rebekka
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wrong coefficient in bedload_engel.f and bedload_engel_gaia.f 1 year 9 months ago #41990

pavans OFFLINE Moderator Posts: 46 Thank you received: 17	Hi all, Thanks for this correction, Pablo also told me about this issue. We will push as soon as possible the right coefficient. Best regards, Sara
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