Hello everybody,
I am working with a Gust Chamber that simulates shear stress above the ocean floor.
I have a sediment sample (grain size and density know) and an analysis at which shear stress suspension occurs. Now, I like to use another sediment sample with the same grain size distrubtion but a 11% higher density and I wonder if I can somehow calculate the shear stress where suspension would occur.
I looked up some literature but could not find any formulars regarding this relationship.
Thank you in advance for your responses, Elena :)
You should be able to get a reasonable estimate of this using the Shields parameter which is a dimensionless shear stress. If you know your critical shear stress for your base case, you can substitute higher grain density into the formula.
https://en.wikipedia.org/wiki/Shields_parameter