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How can I define surface roughness of packed sediment? |
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#1 |
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Limin Sun
Join Date: Jan 2023
Posts: 2
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Is there any way to define surface roughness or drag coefficient?
I am building a model to simulate sediment transportation on the marsh platform. So the surface roughness derived from the D50 is too small for the marsh platform. I have noticed that the "surface roughness" for the packed sediment component is inactivated. How can I activate the "surface roughness"? Any comments or suggestions will be highly appreciated! |
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#2 |
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Sehroosh
Join Date: Apr 2019
Location: Pakistan
Posts: 59
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Surface roughness is used to describe the surface undulations of a structure. Sediment itself is a wrinkle/ripple with so called D50. You already defined it in physics > sediment properties. That's why surface roughness will be replaced by packed sediment fraction option for components defined as 'Packed Sediment'.
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#3 |
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Limin Sun
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That makes sense! I really appreciate your explanation. In that case, I will change the surface properties for all the packed sediment components. The aim is to model sediment dynamics on the marsh platform. I could not find a way to incorporate unsubmerged vegetation in my model. Do you have any suggestions to change the surface properties of the marsh only?
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#4 |
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Sehroosh
Join Date: Apr 2019
Location: Pakistan
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Surface properties of any object can be changed if you define it as 'solid' rather than 'packed sediment'.
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Tags |
packed sediment, sediment scour, surface roughness |
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