FLOW MEASUREMENT DEVICE AND PUMP

1. FLUID MECHANICS
Presentation on
 Pitot tube
 Centrifugal pump
Group members are
 Bazla
 Hafsa Nadir Khan
 Hania zahra
 Javeria Siddiqui
 Kehkashan Matia Omair
 Maha Khan
 Maheen Shahid

2. INTRODUCTION
PITOT TUBE
 It was invented by Henri Pitot a French engineer in 18 century and was modernized by
Henry Darcy a French scientist in early 19 century.
 A pitot tube which is also called pitot probe is a flow measuring device used to measure
fluid (liquid,gas) flow velocity.
 The fluid flow rate in a duct canbe estimated from:
 Volume flow rate (cubic feet per minute)= duct area (square feet)× flow velocity (feet per
minute)

3. TYPES
 PITOT TUBE

4. Working Principle
• Pitot tube :
1) Static pressure
2) Dynamic pressure
3) Stagnation pressure

5. Velocity equation

6. CONSTRUCTION:
PITOT TUBE
Fluid
enter
Pitot tube have
hole to measure
the stagnation
pressure or impact
pressure

7. WORKING
Pitot tube
Fluid enter into pitot tube
Velocity of fluid reduce
Due to stagnation pressure ,
pressure energy increase
Head of pitot tube fill with fuild

8. CENTRIFUGAL PUMP
 A centrifugal pump is a hydraulic machine which converts mechanical energy into
hydraulic energy. Example agriculture, petroleum and petrochemical pumping
Explanation
Centrifugal force Rotational energy
Introduction

9. • CENTRIFUGAL PUMP

10. 2. Centrifugal pump
• The pump works on the principle
of the force vortex flow.
• Liquid enters at the impeller
• Velocity energy of liquid is
converted to pressure energy

11. Main parts of
centrifugal pump
are
• shaft
•Impeller
•Casing
•Delivery valve
•Suction pipe with a
foot valve and strainer

12. WORKING OF CENTRIFUGAL PUMP
Important points :
Foot valve
and strainer
Suction
pipe
Eye of
impeller
impeller
casing
Delivery
pipe
•CENTRIFUGAL
FORCE: due to
which fluid rotate
• CONTINUTY
EQUATION : area
increase & velocity
decrease
• BERNOULLI
EQUATION

13. WORKING
Fluid enter through
foot valve
Rotate in casing
At the end of casing
area increase &
velocity decrease
Out from delivery pipe