- #1
boileroo
- 12
- 0
Homework Statement
An enclosed vertical tube rotates about its vertical axis at w=3000rpm. At the axis, r=0, P=1.5bar and T=293K.
What is the pressure distribution as a function of r? And hence calculate the pressure at r=2m.
The Attempt at a Solution
I have seen this type of questions before with a horizontal tube, where the pressure difference across an element is balanced out by the centripetal force (ie [P-(P+dP)]A = rho*A*w2*r dr).
I would appreciate some help adapting this to work for the tube aligned vertically as stated above. Obviously the mass of the element must also be taken into account, but I am struggling to figure out how! Thank you