- #1
Bakery87
- 11
- 0
I'm dropping a sphere from a known height, and it enters a viscous fluid. I know the initial velocity as it enters the fluid, from there I need the velocity as it falls through the fluid (as a function of time).
I know it should approach it's settling velocity (terminal velocity) and from there I can use stokes law to get the terminal velocity. What I need is the velocity as it approaches that point. Assuming no spin of the sphere. I know the fluid's density and viscosity, sphere density, and initial velocity as it enters the fluid.
I can find this equation for a skydiver falling through the air, but since the air has very little viscosity it does not contribute to the buoyancy of the skydiver.
I know it should approach it's settling velocity (terminal velocity) and from there I can use stokes law to get the terminal velocity. What I need is the velocity as it approaches that point. Assuming no spin of the sphere. I know the fluid's density and viscosity, sphere density, and initial velocity as it enters the fluid.
I can find this equation for a skydiver falling through the air, but since the air has very little viscosity it does not contribute to the buoyancy of the skydiver.