CSTMS SEDTOY
Brief Description of Model Test Case.
Domain
Brief Description of Model Grid.
This 1D model utilizes multiple sediment classes to illustrate sediment distribution and concentration during steady-state conditions, with 21 timesteps. In this test run of Sed_Toy, two cohesive sediment grain size classes are input into the model (0.01mm and 0.005mm). The .01mm sediment class begins on/within the sediment bed at the start of the model; whereas the .005mm grains are found only in the water column. As the model progresses sediment grains settle and/or become suspended, thereby ending with a mixed grained sediment bed at the end of the model run. Sediment concentration profiles can be extracted throughout the time frame for model result comparisons.
Model Parameter Variable Value Length (east-west) 1/Pm 10 Width (north-south) 1/Pn 10
Bottom Sediment
Size MUD_SD50 0.01 mm 0.005mm Density MUD_SRHO 2650 kg/m3 2400 kg/m3 Settling Velocity MUD_WSED 0.1 mm/s 0.01 mm/s Critical Shear Stress (Erosion) MUD_TAU_CE 0.01 N/m2 0.01 N/m2 Critical Shear Stress (Deposition) MUD_TAU_CD 0.1 N/m2 0.1 N/m2 Init Bed Thickness bed_thick 0.01 mm 0.01 mm Init Susp Concentraion MUD_CSED 0 kg/m3 10 kg/m3 Erosion Rate E0 5e-5 kg/m2/s 5e-5 kg/m2/s Porosity MUD_POROS 0.3 0.3
Forcing
No Coriolis
No heating/cooling
No wind
No waves
Body Force:
<wikitex>Describe body force here</wikitex>
Steady State Conditions
<wikitex>$\textcolor{blue}{u} ~= ~XXX ~m/s^{2}$
$\textcolor{blue}{v} ~= ~XXX ~m/s^{2}$
Describe steady state sediment concentration and sediment bed
</wikitex>
Boundary Conditions
<wikitex>Try to describe boundary conditions here wikitex>
Physical Constants
<wikitex>Gravitational acceleration $\textcolor{blue}{g}~ =~ 9.81~ ^{2}$
Von Karman's constant $\textcolor{blue}{\kappa}~ =~ 0.41$
Dynamic viscosity (and minimum diffusivity) $\textcolor{blue}{\nu}~= 1e-6 m^{2}/s$</wikitex>
Note:
If a model incorporates physical constants that differ from these, and/or automatically calculates some values specified here, please specify the values used.
Results
Describe model output that the user should expect to see here. Include one or two figures.
