Page 18 - ebook fluid mechanics_finalize

FLUID MECHANICS

Figure 1.3 : Pressure Diagram

Example 1 :

A pressure gauge connected to a pipe to drain the water. Reading on the gauge

2
2
indicates a pressure equal to 70.2 kN/m . Express the value (kN/m ) in of the
absolute pressure in the pipe.

Solution :

Pressure Gauge, PG = 70.2 kN/m 2

Atmospheric , PAtm=101.3 kN/m 2

p = p + p
Abs G atm

3
3
PAbs = 70.2 x 10 + 101.3 x 10
3
= 171.5 x 10

2
= 171.5 kN/m

7