open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello,

So far, in Sisyphe a Rouse profile is considered to stand during periods of slack water when friction velocity can be zero. This leads to a very big F(=Czref/Cmean) and deposit flux is overvalued. The trick (cf. suspension_rouse.f) consists in keeping the greatest value between the rouse number and 4 which is equivalent to friction velocity >= 0.625 settling velocity. Where does this value come from?

Moreover, diffusivity is actually not parabolic during slack water. Do you know any papers that propose an analytical profile for oscillatory flow?

I thank you very much in advance.

Alexis

You are right that the Rouse profile is inaccurate during slack water, or more in general during time no stationary. In the 2011 proceedings
I am not sure where this value 4 comes from.
of the user club, you will find a paper by me proposing a different analytical solution derived here at HR Wallingford. Unfortunately, this option is not easily coded through a fortran file, you will have to be patient. We are preparing to include this option in the next release this summer.

Regards

Sorry I messed up the reply. It should read

You are right that the Rouse profile is inaccurate during slack water, or more in general during time no stationary. In the 2011 proceedings
of the user club, you will find a paper by me proposing a different analytical solution derived here at HR Wallingford. Unfortunately, this option is not easily coded through a fortran file, you will have to be patient. We are preparing to include this option in the next release this summer. I am not sure where this value 4 comes from; it is propably a simple delimiter.


Regards

Thank you Michiel.

I should have remembered your paper on this topic.

You mention works of Mei and Lean from HR. Do you think these two papers could be freely available?

With best regards,

Alexis

I wanted to say Miles and Lean ...