Velocity of Air in Wessel.

Velocity = volumetric flowrate / cross-sectional area.

What does "perfect" mean?

This last batch of questions looks like homework to me.

hi dear ,

calculate the volume of vessel v=2πRL

be sure perfect

L =the length of vessel

π =3.14 R=internal raduis

calculate the time by stop watch

Q = Volume \ Time

velocity = Q \ cross section area

choose your unite in calculation per meter

to have velocity m\s

smile engineer : B.R.abo Ismail

What you compute is NOT the vessel volume but ONLY the mantel area!

The cross area is A= π*R^2 and *L = V

Are sure about the right use of the word "perfect"?

ooooo dear

i am very sorry , i was very tired .

you are alright

The cross area is A= π*R^2 and *L = V

perfect = there is no loss due to collision between vessel and fluid

that i understand .

In fact your answer is not totally correct since the velocity is NOT same across the whole section. The distribution depends on:

- ratio between entry area and cross section

- ration between length and diameter (if cylinder)

- ratio between out let and cross area.

- inlet air velocity

And the answer cannot be done before the OP explains what is the meaning of "perfect" in his question.

hi , iam very sorry for any mistake ,error .

please give us the correct answer .

i wiat your answer .

You did not answer the question about "perfect".