Conical Mesh with blockMesh?
 

Is there a way to create a conical volume with blockMesh ?

Then, would it be possible to impose only a couple a value (U for example) on the outer boundary (circle) ?

Thank you

Ok I found an example of meshing here :
http://openfoamwiki.net/index.php/Si...nical_diffuser

However, I would like to prescribe radial velocities on the sides of the cone (not the "inlet" and "outlet").

Is there an existing boundary condition that I can use to impose radial velocities in spherical coordinates ?

Maybe groovyBC can help you there, which offers parametrized boundary conditions.