Stokes Law: Compute the settling velocities of each of these grain sizes using S

Question

Stokes Law: Compute the settling velocities of each of these grain sizes using Stoke’s Law. Assume the following “average” grain sizes for your settling velocity calculations. Hint: List assumption for density of water in relation to a “reasonable” in-situ water temperature. Comment on the reasonableness of your results! a. Clay: 0.004 mm b. Silt: 0.030 mm c. Fine Sand: 0.25 mm d. Medium Sand: 1.2 mm e. Fine Gravel: 9.5 mm f. Coarse Gravel: 75 mm Gravel – Particle density = 2.625 g/cm3 Coarse Sand – Particle density = 2.655 g/cm3 Fine Sand – Particle density = 2.659 g/cm3 Silt– Particle density = 2.798 g/cm3 Clay – Particle density = 2.837 g/cm3
Stokes Law: Compute the settling velocities of each of these grain sizes using Stoke’s Law. Assume the following “average” grain sizes for your settling velocity calculations. Hint: List assumption for density of water in relation to a “reasonable” in-situ water temperature. Comment on the reasonableness of your results! a. Clay: 0.004 mm b. Silt: 0.030 mm c. Fine Sand: 0.25 mm d. Medium Sand: 1.2 mm e. Fine Gravel: 9.5 mm f. Coarse Gravel: 75 mm Gravel – Particle density = 2.625 g/cm3 Coarse Sand – Particle density = 2.655 g/cm3 Fine Sand – Particle density = 2.659 g/cm3 Silt– Particle density = 2.798 g/cm3 Clay – Particle density = 2.837 g/cm3
Stokes Law: Compute the settling velocities of each of these grain sizes using Stoke’s Law. Assume the following “average” grain sizes for your settling velocity calculations. Hint: List assumption for density of water in relation to a “reasonable” in-situ water temperature. Comment on the reasonableness of your results! a. Clay: 0.004 mm b. Silt: 0.030 mm c. Fine Sand: 0.25 mm d. Medium Sand: 1.2 mm e. Fine Gravel: 9.5 mm f. Coarse Gravel: 75 mm Gravel – Particle density = 2.625 g/cm3 Coarse Sand – Particle density = 2.655 g/cm3 Fine Sand – Particle density = 2.659 g/cm3 Silt– Particle density = 2.798 g/cm3 Clay – Particle density = 2.837 g/cm3

Explanation / Answer

a) 1.6280048742661E-5 m/s

b) 0.0008963110667996 m/s

c) 0.057431871053506 m/s

d) 1.3232303090728 m/s

e) 81.231998449097 m/s

f) 5062.9361914257 m/s

All other condition remaining fixed only the density(almost constant or small change) and increasing particle diameter from clay to gravel thus with increasing particle diameter and mass the settling velocity increases from clay to course gravel.

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