CMS-Flow:Sediment Fall Velocity: Difference between revisions

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where:
where:


v = kinematic viscosity [m<sup>2</sup>/s]
:v = kinematic viscosity [m<sup>2</sup>/s]


d = grain size [m]
:d = grain size [m]


d<sub>*</sub> = dimensionless grain size [-].
:d<sub>*</sub> = dimensionless grain size [-].




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g = gravitational constant (9.81 m/s<sup>2</sup>).
g = gravitational constant (9.81 m/s<sup>2</sup>).
= References =
*Soulsby, R. L. 1997. Dynamics of marine sands. London, England: Thomas Telford Publications.

Latest revision as of 19:55, 18 February 2015

Sediment Fall Velocity

The sediment fall velocity may be user-specified or is calculated using the formula by Soulsby (1997):

  (1)

where:

v = kinematic viscosity [m2/s]
d = grain size [m]
d* = dimensionless grain size [-].


The dimensionless grain size is given by

  (2)

where:

s = sediment specific gravity or relative density [-]

g = gravitational constant (9.81 m/s2).

References

  • Soulsby, R. L. 1997. Dynamics of marine sands. London, England: Thomas Telford Publications.