[hunt_mat]

Originally Posted by Mike
;9552

Does anyone please tell me if inviscid flow can be rotational or not? What is the nature of rotational flow?

The answer is yes, you can get inviscid flows that has vorticity. All you need is . in 2D, one possible source of vorticity are shear flows. I've actually written a paper on this that's free to download. What you can do, is choose a function and call it the vorticity, and then solve the Euler equations to find the velocity profile.

Depending on your fluid being compressible or not, can also be a source of vorticity, others have mentioned shock waves as a source of vorticity.

In 2D, the vorticity is a scalar function, and will remain in the fluid for all time. https://en.wikipedia.org/wiki/Vorticity_equation