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Hi, all

I want to compute sediment transport with multi non-conhesive sediment and only one conhesive sediment. The bed composition is modelled by one conhesive fraction and six non-cohesive fractions. For each sediment fraction a characteristic grain diameter was defined as followed: Coarse silt(d = 4.7e-5 m-->conhesive),Very fine sand(d = 9.4e-5 m),fine sand(d = 1.8e-4 m),medium sand(d = 7.5e-4 m), coarse sand(d = 1.5e-3 m), very fine gravel(d = 3e-3 m).

Please, give me advices How to do that? Should i simulate in conhesive case or non-conhesive case?
In that case: should i modify subroutine "INIT_COMPO" or "INIT_COMPO_COH" to define bed composition (vary in space)?
Regards,
Ngoc Anh.

Dear Anh,
please refer to the Sisyphe manual for information on how implementing these processes:
www.opentelemac.org/index.php/manuals/viewcategory/11-sisyphe

You can also take a look to the test cases: bosse_vase; bosse_mixed; conservation_mixed; conservation_vase; River_arc for inspiration.

Kind regards,

Pablo

Thanks you for your quickly response.
If use keyword "conhesive sediments = yes", i define only two class (j=1,for sand) and (j=2 for mud). In subroutine INIT_COMPO_COH, i just modify only two 2 class (j=1,for sand) and (j=2 for mud).
But in my case there are 5 non-conhesive sediments and 1 conhesive(5 class sand and 1 class mud). How to do that?
My english skill is not good, maybe i express my ideal not clear.
Best Regards;
Ngoc Anh