14.7 A vertical pipe is shown in Figure

14.11 and is filled with a fluid of density

1100 kg m*3.

The top section of the pipe (1) has a radius

of ?1 = 0:05 m while the bottom section

(2) has a radius of ?2 = 0:03 m.

Initially the fluid at point 1 is stationary.

With this condition what is ...

(a) ...the volume-flow-rate of the fluid

at point 1?

(b) ...the volume-flow-rate of the fluid

at point 2?

(c) ...the speed of the fluid at point 2?

(d) ...the gauge pressure of the fluid at

point 2?

(e) ...the difference in pressure

between the two points

?? = ?2 * ?1?

If the fluid speed at point 1 is 1:5 m s*1

and the pressure at point 1 is still+4:0 kPa

(gauge) then what is ...

(f ) ...the volume-flow-rate of the fluid

at point 1?

(g) ...the volume-flow-rate of the fluid

at point 2?

(h) ...the speed of the fluid at point 2?

(i) ...the gauge pressure of the fluid at

point 2?

(j) ...the difference in pressure

between the two points

?? = ?2 * ?1?

P. 1 (gauge) = +4.0 kPa 0.75 m 2 Figure 14.11