1. Introduction to Fluid Mechanics
Chapter 10
Fluid Machinery

2. Main Topics Introduction and Classification of Fluid Machines
Turbomachinery Analysis
Performance Characteristics
Applications to Fuid Systems

3. Introduction and Classification of Fluid Machines
Positive Displacement
Turbomachines
Radial-Flow (Centrifugal)
Axial-Flow
Mixed-Flow

4. Introduction and Classification of Fluid Machines
Machines for Doing Work on a Fluid
Pumps
Fans
Blowers
Compressors

5. Introduction and Classification of Fluid Machines
Machines for Doing Work on a Fluid

6. Introduction and Classification of Fluid Machines
Machines for Doing Work on a Fluid

7. Introduction and Classification of Fluid Machines
Machines for Extracting Work (Power) from a Fluid
Hydraulic Turbines (Impulse and Reaction)
Gas Turbines (Impulse and Reaction)

8. Introduction and Classification of Fluid Machines
Machines for Extracting Work (Power) from a Fluid

9. Turbomachinery Analysis
The Angular Momentum Principle
Apply to Control Volume:

10. Turbomachinery Analysis
Euler Turbomachine Equation
Mechanical Power:
Theoretical Head:

11. Turbomachinery Analysis
Velocity Diagrams

12. Turbomachinery Analysis
Example: Idealized Centrifugal Pump
Negligible torque due to surface forces (viscous and pressure).
Inlet and exit flow tangent to blades.
Uniform flow at inlet and exit.
Zero inlet tangential velocity

13. Turbomachinery Analysis
Example: Idealized Centrifugal Pump (Continued)
Head Equation:
Shutoff Head:

14. Turbomachinery Analysis
Example: Idealized Centrifugal Pump (Continued)

15. Turbomachinery Analysis
Machines for Doing Work on a Fluid
Hydraulic Power:
Pump Efficiency:

16. Turbomachinery Analysis
Machines for Extracting Work (Power) from a Fluid
Hydraulic Power:
Turbine Efficiency:

17. Performance Characteristics
Machines for Doing Work on a Fluid

18. Performance Characteristics
Machines for Extracting Work (Power) from a Fluid

19. Performance Characteristics
Dimensional Analysis and Specific Speed
Flow Coefficient:
Head Coefficient:
Power Coefficient:

20. Performance Characteristics
Dimensional Analysis and Specific Speed
Torque Coefficient:

21. Performance Characteristics
Dimensional Analysis and Specific Speed
Specific Speed:
Specific Speed (Customary Units):
Specific Speed (Customary Units):

22. Performance Characteristics
Dimensional Analysis and Specific Speed

23. Performance Characteristics
Similarity Rules
For Dynamic Similarity:
… and …
… so …

24. Applications to Fluid Systems
Machines for Doing Work on a Fluid

25. Applications to Fluid Systems
Machines for Doing Work on a Fluid
Pump Wear

26. Applications to Fluid Systems
Machines for Doing Work on a Fluid
Pumps in Series

27. Applications to Fluid Systems
Machines for Doing Work on a Fluid
Pumps in Parallel

28. Applications to Fluid Systems
Machines for Doing Work on a Fluid
Fans, Blowers, and Compressors

29. Applications to Fluid Systems
Machines for Doing Work on a Fluid
Fans, Blowers, and Compressors

30. Applications to Fluid Systems
Machines for Doing Work on a Fluid
Fans, Blowers, and Compressors

31. Applications to Fluid Systems
Machines for Doing Work on a Fluid
Positive-Displacement Pumps

32. Applications to Fluid Systems
Machines for Doing Work on a Fluid
Propellers
Speed of Advance Coefficient:
Thrust, Torque, Power Coefficients, and Propeller Efficiency

33. Applications to Fluid Systems
Machines for Extracting Work (Power) from a Fluid
Hydraulic Turbines
Wind-Power Machines