Ball Drop

Ball-Drop Multistage Fracturing

Equation used to calculate ball speed in fluid:

V=sqrt(4*g*d(rhos-rho)/rho/(3*Cd))

Terminal velocity - follow wikipedia

where

V - Velocity

g - gravitational accelerations

d - diameter of spherical object

rhos - density of object

rho - density of fluid

Cd - drag coefficient (Drag coefficient - follow wikipedia), calculated as:

re - Reynolds number

re=rho*V*d/mu

where

rho - density of the fluid

V - velocity of the fluid with respect to the object

d - diameter of spherical object

my - viscosity of the fluid

Reynolds number - follow wikipedia