Recent content by sayak

yes you did. that is why a spinning ball swerves in the air.

The force being referred to here is FRICTION. Viscosity is something like the friction coefficient you get when you are considering a solid surface. There is the famous Newton's law of viscosity that state Shear Stress [N/m^2]=viscosity*Normal_Velocity_Gradient. So the fluid encounters...

Hello! I am doing Master's in CFD coding in India. we are developing a C-based general purpose code that can solve various fluid and thermal problems. No LES though. We are only implementing the 2-eqn models .

I have a lot of e-books on mechanical engineering. Is there a resource folder of some sort in which I can upload them?

I will basically say the same thing as above. If you consider inviscid flow only then from 0 to 90 pressure decreases and then from 90 to 180 the pressure again increases in such a way that pressure at 0 (front of ball) and pressure at 180 (back of ball) is same. There are analytical solutions...

As far as I am aware Div(V)=0 is the only condition for incompressible flows. If Div(V) is not zero, flow is not incompressible and vice versa. So necessary and sufficient.

do you want an undergraduate textbook or a post graduate one? a good beginner textbook of fluid mechanics is by Frank M. White (Mc-Graw Hill) Andersonn's aerodynamics is also excellent If you are interested in engine design you should look up books on IC engines.