velocity profile

liu

Hello all,

I have a problem on fluid dynamics and I will appreciate if some one could give some insight or point me towards the right direction.

I have an enclosure, say a hollow cylinder, with air flow from the bottom of the cylinder. the top of the cylinder has is closed with a couple of small holes bored out. the air escapes from the top through these bored holes.

my question is when air enters the hollow cylinder with a certain flow rate , it has a certain velocity and when it escapes through the top holes, it has another set of velocity. the diameter of the cylinder is much much bigger than the hole. how do I analyze the velocity profile of the air near the holes on the top without using any cfd simulation softwares. the air velocity will pick up while going through the small holes on the top, so does the fluid starts accelerating as it proceeds towards the hole. if so at what part of the cylinder. I will really appreciate the help.

Thanks