Skip to main content

Posts

Showing posts from October, 2013

Drag Co-efficients (Cd)

You can follow the article written in GK Publisher about Drag co-efficient for your GATE exams:
Forces on Submerged bodies:
Drag Co-efficient (Cd):
It is dependent upon REynolds number at low and intermediate velocities but is independent at high velocity. However at high velocities, drag of co-efficients are related to the Mach number which has negligible effect at low velocities.
Cd = Drag force per unit projected area of body or flow / (p.U2/2)
In general  Cd = f(Re, Fr, M and Body Shape)