Fluid flow problem with the momentum balance equation

1. Sep 20, 2012

abstracted6

All problem info, and my work is done in the attached pdf.

Basically, I'm not sure that I have done it correctly.

Attached Files:

• 1.4-1, fluid flow.pdf
File size:
428.5 KB
Views:
101
2. Sep 21, 2012

LawrenceC

What is the formula for the area of a circle in terms of diameter?

3. Sep 21, 2012

abstracted6

Ooops

Fp = -$\rho$vj2$\frac{\pi}{4}$(D12 - D22)

4. Sep 21, 2012

LawrenceC

Looks good to me.

5. Sep 21, 2012

rude man

Comment: interesting problem; case where change in momentum is vΔm instead of the usual mΔv.