Buch, Englisch
Reihe: Wiley-ASME Press Series
CFD Modeling, Simulations, and Applications
Buch, Englisch
Reihe: Wiley-ASME Press Series
ISBN: 978-1-394-32416-3
Verlag: John Wiley & Sons Inc
Autoren/Hrsg.
Fachgebiete
Weitere Infos & Material
Preface xiii
Acknowledgments xv
1 Introduction 1
1.1 Definition and Importance of Pumps 1
1.1.1 Definition of Pumps 1
1.1.2 The Importance of Pumps 1
1.2 Classification and Structural Forms of Pumps 2
1.2.1 Pump Classification 2
1.2.2 Impeller Pump Overflow Components and Structural Forms 3
1.2.2.1 Overflow Components of Impeller Pump 3
1.2.2.2 Structural Forms of Blade Pumps 4
1.3 Application of Pump 11
References 15
2 Basic Principles and Physical Concepts of Pumps 16
2.1 Calculation of Velocity Triangles 16
2.1.1 Motion Analysis 16
2.1.2 Velocity Triangle 17
2.1.3 Velocity Triangle at Blade Inlet and Outlet 19
2.1.3.1 Blade Inlet Velocity Triangle 19
2.1.3.2 The Velocity Triangle at the Blade Outlet 20
2.2 The Theory of Energy Conversion in Pumps 21
2.2.1 Mechanical Loss and Mechanical Efficiency 21
2.2.2 Volume Loss and Volume Efficiency 22
2.2.3 Hydraulic Loss and Hydraulic Efficiency 22
2.3 Similarity Laws 23
2.3.1 Basic Concepts of Similarity Laws 23
2.3.1.1 Geometric Similarity 24
2.3.1.2 Kinematic Similarity 24
2.3.1.3 Dynamic Similarity 24
2.3.1.4 Similarity Criterion for Pipe Flow—Reynolds Criterion 24
2.3.1.5 Similarity Criterion for Free Surface Flow—Froude Criterion 25
2.3.1.6 Similarity Criterion for Flow in Pump Impellers—Euler Criterion 25
2.3.2 Law of Pump Similarity 25
2.3.2.1 First Similarity Law—Flow Rate Similarity 26
2.3.2.2 Second Similarity Law—Head Similarity 26
2.3.2.3 Third Similarity Law—Shaft Power Similarity 27
2.3.3 Specific Speed 27
2.3.3.1 Derivation of the Specific Speed Formula 27
2.3.3.2 Explanation of Specific Speed 28
References 29
3 Design Methods for Vane Pumps 30
3.1 Hydraulic Design of the Centrifugal and Mixed Flow Pump 30
3.1.1 Determination of Design Parameters and Their Hydraulic Structural Solutions 30
3.1.1.1 Provide Parameters and Requirements for the Design 30
3.1.1.2 Pump Shaft Power P and Rated Power P'g of the Prime Mover 36
3.1.1.3 Determination of Pump Inlet and Outlet Diameters 36
3.1.2 Hydraulic Design of the Impeller 37
3.1.2.1 Pump Shaft Diameter and Impeller Hub Diameter 37
3.1.2.2 Similarity Conversion Method 39
3.1.2.3 Calculation of Key Impeller Dimensions Using the Velocity Coefficient Method 43
3.1.2.4 Blade Drawing 60
3.1.3 Hydraulic Design of the Suction Chamber 74
3.1.3.1 Conical Suction Chamber 74
3.1.3.2 Annular Suction Chamber 75
3.1.3.3 Semi-Spiral Suction Chamber 76
3.2 Hydraulic Design of the Vortex Pump 79
3.2.1 Introduction to Axial-Flow Pumps 79
3.2.2 Structure Parameters and Design Theory 79
3.2.2.1 Cylindrical Layer Independence Hypothesis 80
3.2.2.2 Structural Parameters 81
3.2.2.3 Design Theory 83
3.2.3 Design the Axial-Flow Pump Impeller Using the Airfoil Lift Method 83
3.2.3.1 Airfoil and Its Characteristics 83
3.2.3.2 Fundamental Governing Equation for Axial-Flow Pump Blade Design Using the Airfoil
Lift Method 85
3.2.4 Axial-Flow Pump Impeller Design Using Streamline Theory 87
3.2.4.1 Governing Differential Equation for Flow at Impeller Discharge 87
3.2.4.2 Free Vortex and Forced Vortex 87
3.2.4.3 Circulation Correction and Streamline-Based Design Methodology 88
3.2.4.4 Blade Inlet Incidence Angle 89
3.2.4.5 Evolution of Profile Radius and Airfoil Thickness Distribution 90
3.2.4.6 Blade Contouring Procedure 91
3.2.5 Axial-Flow Pump Guide Vane Design 95
3.2.5.1 Guide Vane Structural Parameter Selection 95
3.2.5.2 Streamline Method for Axial-Flow Pump Guide Vane Design 96
3.3 Hydraulic Design of the Volute Casing 98
3.3.1 Hydraulic Design Principles of the Volute Casing 99
3.3.2 Hydraul
