Introduction to Fluid Mechanics Chapter 10 Fluid Machinery
- Slides: 33
Introduction to Fluid Mechanics Chapter 10 Fluid Machinery © Fox, Pritchard, & Mc. Donald
Main Topics ü Introduction and Classification of Fluid Machines ü Turbomachinery Analysis ü Performance Characteristics ü Applications to Fuid Systems © Fox, Pritchard, & Mc. Donald
Introduction and Classification of Fluid Machines ü Positive Displacement ü Turbomachines • Radial-Flow (Centrifugal) • Axial-Flow • Mixed-Flow © Fox, Pritchard, & Mc. Donald
Introduction and Classification of Fluid Machines ü Machines for Doing Work on a Fluid • • Pumps Fans Blowers Compressors © Fox, Pritchard, & Mc. Donald
Introduction and Classification of Fluid Machines ü Machines for Doing Work on a Fluid © Fox, Pritchard, & Mc. Donald
Introduction and Classification of Fluid Machines ü Machines for Doing Work on a Fluid © Fox, Pritchard, & Mc. Donald
Introduction and Classification of Fluid Machines ü Machines for Extracting Work (Power) from a Fluid • Hydraulic Turbines (Impulse and Reaction) • Gas Turbines (Impulse and Reaction) © Fox, Pritchard, & Mc. Donald
Introduction and Classification of Fluid Machines ü Machines for Extracting Work (Power) from a Fluid © Fox, Pritchard, & Mc. Donald
Turbomachinery Analysis üThe Angular Momentum Principle Apply to Control Volume: © Fox, Pritchard, & Mc. Donald
Turbomachinery Analysis üEuler Turbomachine Equation Mechanical Power: Theoretical Head: © Fox, Pritchard, & Mc. Donald
Turbomachinery Analysis üVelocity Diagrams © Fox, Pritchard, & Mc. Donald
Turbomachinery Analysis ü 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 © Fox, Pritchard, & Mc. Donald
Turbomachinery Analysis ü Example: Idealized Centrifugal Pump (Continued) Head Equation: Shutoff Head: © Fox, Pritchard, & Mc. Donald
Turbomachinery Analysis ü Example: Idealized Centrifugal Pump (Continued) © Fox, Pritchard, & Mc. Donald
Turbomachinery Analysis ü Machines for Doing Work on a Fluid Hydraulic Power: Pump Efficiency: © Fox, Pritchard, & Mc. Donald
Turbomachinery Analysis ü Machines for Extracting Work (Power) from a Fluid Hydraulic Power: Turbine Efficiency: © Fox, Pritchard, & Mc. Donald
Performance Characteristics ü Machines for Doing Work on a Fluid © Fox, Pritchard, & Mc. Donald
Performance Characteristics ü Machines for Extracting Work (Power) from a Fluid © Fox, Pritchard, & Mc. Donald
Performance Characteristics ü Dimensional Analysis and Specific Speed Flow Coefficient: Head Coefficient: Power Coefficient: © Fox, Pritchard, & Mc. Donald
Performance Characteristics ü Dimensional Analysis and Specific Speed Torque Coefficient: © Fox, Pritchard, & Mc. Donald
Performance Characteristics ü Dimensional Analysis and Specific Speed: Specific Speed (Customary Units): © Fox, Pritchard, & Mc. Donald
Performance Characteristics ü Dimensional Analysis and Specific Speed © Fox, Pritchard, & Mc. Donald
Performance Characteristics ü Similarity Rules For Dynamic Similarity: … and … … so … © Fox, Pritchard, & Mc. Donald
Applications to Fluid Systems ü Machines for Doing Work on a Fluid © Fox, Pritchard, & Mc. Donald
Applications to Fluid Systems ü Machines for Doing Work on a Fluid • Pump Wear © Fox, Pritchard, & Mc. Donald
Applications to Fluid Systems ü Machines for Doing Work on a Fluid • Pumps in Series © Fox, Pritchard, & Mc. Donald
Applications to Fluid Systems ü Machines for Doing Work on a Fluid • Pumps in Parallel © Fox, Pritchard, & Mc. Donald
Applications to Fluid Systems ü Machines for Doing Work on a Fluid • Fans, Blowers, and Compressors © Fox, Pritchard, & Mc. Donald
Applications to Fluid Systems ü Machines for Doing Work on a Fluid • Fans, Blowers, and Compressors © Fox, Pritchard, & Mc. Donald
Applications to Fluid Systems ü Machines for Doing Work on a Fluid • Fans, Blowers, and Compressors © Fox, Pritchard, & Mc. Donald
Applications to Fluid Systems ü Machines for Doing Work on a Fluid • Positive-Displacement Pumps © Fox, Pritchard, & Mc. Donald
Applications to Fluid Systems ü Machines for Doing Work on a Fluid • Propellers Speed of Advance Coefficient: Thrust, Torque, Power Coefficients, and Propeller Efficiency © Fox, Pritchard, & Mc. Donald
Applications to Fluid Systems ü Machines for Extracting Work (Power) from a Fluid • Hydraulic Turbines • Wind-Power Machines © Fox, Pritchard, & Mc. Donald
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