Mass flow rate is "PAV"

volume flow rate is "AV"

NOTE: the equation : A1v1: A2V2 is called the equation of continuity.

Example 1; water flows through apipe of radius 10cm at speed of 20m/s. Calculate the mass flow rate ( p: 1000 kg/m3) .

Solution

M:PAV : 1000kg * 10cm * 2m/s : 20,000kg/s

Exercise

The speed of water flowing in pipe of radius 8cm in 3m/s. Calculate the volume flow rate. How long will it take to fill rectangular pool with water if the dimensions of the pool are 8cm*5cm*4cm.

**Bernoulli's princple**

Bernoulli's principle states that where velocity of fluid is high, the pressure is law and where the velocity is law, the pressure is high.

The formula of Bernoulli's equation is;

P1+1/2pv12+pgh1 : P2+1/2pv22+pgh2

Writer: max'ed c. Nuur

Writer: max'ed c. Nuur