UID:
almafu_9961311134302883
Umfang:
1 online resource (xiv, 657 pages) :
,
digital, PDF file(s).
Ausgabe:
Second edition.
ISBN:
9781108648936
,
1108648932
,
9781108585088
,
1108585086
Serie:
Cambridge Aerospace Series
Inhalt:
Acquire complete knowledge of the basics of air-breathing turbomachinery with this hands-on practical text. This updated new edition for students in mechanical and aerospace engineering discusses the role of entropy in assessing machine performance, provides a review of flow structures, and includes an applied review of boundary layer principles. New coverage describes approaches used to smooth initial design geometry into a continuous flow path, the development of design methods associated with the flow over blade shape (cascades loss theory) and annular type flows, as well as a discussion of the mechanisms for the setting of shaft speed. This essential text is also fully supported by over 200 figures, numerous examples, and homework problems, many of which have been revised for this edition.
Anmerkung:
Title from publisher's bibliographic system (viewed on 20 Nov 2023).
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Cover -- Half-title -- Series information -- Title page -- Imprints page -- Dedication -- Contents -- 1 Introduction to Gas Turbine Engines -- 1.1 Definition -- 1.2 Advantages of Gas Turbine Engines -- 1.3 Applications of Gas Turbine Engines -- 1.4 The Gas Generator -- 1.5 Air Intake and Inlet Flow Passage -- 1.6 Engine Exhaust Component -- 1.7 Multispool Engine Arrangements -- 1.8 Thermodynamic Cycle in a Single-Combustor Engine -- 1.9 Importance of Metallurgical Progress -- 2 Overview of Turbomachinery Nomenclature -- 2.1 Definition of a Turbomachine -- 2.2 General Classification of Turbomachines -- 2.3 Stage Definition -- 2.4 Coordinate System -- 2.5 Velocity Diagrams -- 2.6 Multiple Staging -- 2.7 Viscosity and Compressibility Factors -- 2.8 Stator/Rotor Interaction -- Reference -- 3 Aerothermodynamics of Turbomachines and Design-Related Topics -- 3.1 Assumptions and Limitations -- 3.2 Energy-Conservation Law -- 3.3 Introduction of Total Properties -- 3.4 Ideal Gas as a Working Medium -- 3.5 Entropy-Based Loss Coefficient -- 3.6 Comments -- 3.7 Compressibility of the Working Medium -- 3.8 Sonic Speed in Ideal Gases -- 3.9 Mach Number and Compressibility of a Flow Field -- 3.10 Total Properties in Terms of the Mach Number -- 3.11 Definition of the Critical Mach Number -- 3.12 Total Properties in Terms of the Critical Mach Number -- 3.13 Definition of the Pitch Line in Turbomachines -- 3.14 Continuity Equation in Terms of Total Properties -- 3.15 Isentropic Flow in Varying-Area Passages -- 3.16 The Sonic State -- 3.17 Nozzle and Diffuser-Like Airfoil Cascades -- 3.18 Bernoulli's Equation: Applicability and Limitations -- 3.19 Favorable and Unfavorable Pressure Gradients -- 3.20 Design Point and Off-Design Operation Modes -- 3.21 Choice of the Design Point -- 3.22 Variable-Geometry Turbomachines.
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3.23 Means of Assessing Turbomachinery Performance -- 3.24 Total-Relative Flow Properties -- 3.25 Introduction to the Relative Critical Mach Number -- 3.26 Losses in Constant-Area Annular Ducts (Fanno Process) -- 3.27 Fanno Flow Relationships -- 3.28 Exhaust Diffusers -- 3.29 Definition of the Momentum Thickness -- Problems -- References -- 4 Energy Transfer between a Fluid and a Rotor -- 4.1 Axial Momentum Equation -- 4.2 Radial Momentum Equation -- 4.3 Tangential Momentum Equation -- 4.4 Stationary and Rotating Frames of Reference -- 4.5 Flow and Airfoil Angles -- 4.6 Components of Energy Transfer -- 4.7 Definition of the Stage Reaction -- 4.8 Reaction of Axial-Flow Stages -- 4.9 Introduction of the Utilization Factor -- 4.10 Impulse Turbines -- 4.11 Reaction Turbines -- 4.12 Fifty Percent Reaction Turbines -- 4.13 Reaction-Alternative Option -- 4.14 Reaction-Related Topic Summary -- 4.15 Invariant Thermophysical Properties -- 4.16 Importance of the Invariant Properties -- 4.17 Total-Relative Properties -- 4.18 Incidence and Deviation Angles -- 4.19 Comments -- 4.20 Remark -- 4.21 Flow in Vaneless Passages -- 4.22 Flow across Bends -- 4.23 Flat Plate Parallel to the Flow -- 4.24 Flat Plate Normal to the Flow Direction -- 4.25 Flow over Airfoil Sections -- 4.26 Pressure Distribution -- 4.27 Effect of Compressibility -- 4.28 Blade Terminology -- 4.29 Fluid Angles -- 4.30 Cascades of Blades -- 4.31 Theoretical Methods -- 4.32 Flow Deviation -- 4.33 Energy Transfer and Loss in Terms of Lift and Drag -- 4.34 Arrangement of Blades -- 4.35 Optimum Performance of a Stagger: Degree of Reaction -- 4.36 Optimum Stage Performance: Effect of Blade Spacing -- 4.37 Free- versus Forced-Vortex Flows -- 4.38 Discussion of Vortex Flow -- 4.39 Effects of Vortex Flows on Design -- 4.40 Blade-to-Blade Hub-to-Casing Drag Coefficients.
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4.41 Wall (or Annulus) Friction Loss -- 4.42 Secondary Flow Loss -- Problems -- References -- 5 Dimensional Analysis, Maps, and Specific Speed -- 5.1 Introduction -- 5.2 Geometrical Similarity -- 5.3 Dynamic Similarity -- 5.4 Buckingham's π Theorem: Incompressible Flows -- 5.5 Application to Compressible-Flow Turbomachines -- 5.6 Compressor and Turbine Maps -- 5.7 Choking of Compressors and Turbines -- 5.8 Specific Speed -- 5.9 Application to Incompressible-Flow Turbomachines -- 5.10 Application to Compressible-Flow Turbomachines -- 5.11 Design Role of the Specific Speed -- 5.12 Traditional Specific-Speed Approximations -- Problems -- 6 Radial Equilibrium Theory -- 6.1 Assumptions -- 6.2 Implications -- 6.3 Derivation of the Radial Equilibrium Equation -- 6.4 Special Forms of the Radial Equilibrium Equation -- 6.5 Further Simplifications -- Problems -- 7 Polytropic (Small-Stage) Efficiency -- 7.1 Derivation of the Polytropic Efficiency -- 7.2 Multistage Compressors and Turbines -- Problems -- 8 Axial-Flow Turbines -- 8.1 Stage Definition -- 8.2 The Preliminary Design Process -- 8.3 First Step: Investigate a Single-Stage Configuration -- 8.4 Second Step: Define the Stage-to-Stage Work Split -- 8.5 Third Step: Stage-by-Stage Turbine Design -- 8.6 Stage Design: A Simplified Approach -- 8.7 Definition of the Incidence and Deviation Angles -- 8.8 Detailed Design of Airfoil Cascades -- 8.9 Airfoil Cascade Geometry Variables -- 8.10 Airfoil Aerodynamic Loading -- 8.11 Geometrical Discontinuities -- 8.12 Performance-Controlling Variables -- 8.13 Aspect Ratio -- 8.14 Tip Clearance Effects -- 8.15 Reynolds Number Effect -- 8.16 Incidence Angle Effect -- 8.17 Suction-Side Flow Diffusion -- 8.18 Location of the Front Stagnation Point -- 8.19 Trailing-Edge Thickness -- 8.20 Design-Oriented Empirical Correlations.
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8.21 Stacking of the Vane and Blade Airfoil Sections -- 8.22 Shaft-Work Extraction in Low Aspect-Ratio Blades -- 8.23 The Supersonic Stator Option -- 8.24 Comment -- 8.25 Shape of the Stagnation Streamlines -- 8.26 Simple Component Adaptation Means -- 8.27 Hot-to-Cold Dimensions Conversion -- 8.28 Cooling Flow Extraction and Path of Delivery -- 8.29 Comment -- Problems -- References -- 9 Axial-Flow Compressors -- 9.1 Introduction -- 9.2 Comparison with Axial-Flow Turbines -- 9.3 Stage Definition and Multiple Staging -- 9.4 Normal Stage Definition -- 9.5 Standard Airfoil Profiles -- 9.6 Real Flow Effects: Effect of the Incidence Angle -- 9.7 Effect of the Reynolds Number -- 9.8 Effect of the Mach Number -- 9.9 Tip Clearance Effect -- 9.10 Compressor Off-Design Characteristics -- 9.11 Rotating Stall and Total Surge -- 9.12 Compressor Behavior during Starting -- 9.13 Means of Suppressing Startup Problems -- Problems -- Reference -- 10 Radial-Inflow Turbines -- 10.1 Introduction -- 10.2 Components of Energy Transfer -- 10.3 Flow Angles -- 10.4 Stage Reaction -- 10.5 Other Performance-Related Dimensionless Variables -- 10.6 Total-Relative Properties and Critical Mach Number -- 10.7 Conventional-Stage Geometrical Configurations -- 10.8 Compressibility Effects -- 10.9 Stage Design Approach -- 10.10 Closed-Form Loss Correlations -- 10.11 Effect of the ''Scallop'' Radius and Backface Clearance -- 10.12 Stage Placement in a Multistage Turbine -- 10.13 Cooling Techniques -- Problems -- References -- 11 Centrifugal Compressors -- 11.1 Component Identification -- 11.2 Impeller Inlet System -- 11.3 Inlet-Duct Total-Pressure Loss -- 11.4 Compressor Thermodynamics -- 11.5 Impeller Blading Options -- 11.6 Components of Energy Transfer and Stage Reaction -- 11.7 Performance Consequences of the Static Head -- 11.8 Performance Consequences of the Dynamic Head.
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11.9 Acceleration Components within the Impeller -- 11.10 Slip Phenomenon -- 11.11 Slip Factor -- 11.12 Stage Total-to-Total Efficiency -- 11.13 Volute Flow Field -- 11.14 One-Dimensional Approach to Volute Design -- 11.15 Total-to-Static Efficiency -- 11.16 Tip Clearance Effect -- 11.17 Multiple Staging -- 11.18 Impeller-Stator Unsteady Flow Interaction -- Problems -- References -- 12 Turbine-Compressor Matching -- 12.1 Problem Category 1 -- 12.2 Problem Category 2 -- 12.3 Performance-Related Variables in Propulsion Systems -- 12.4 Mechanism of Shaft-Speed Setting -- 12.5 Gas Generator Operating Lines on Compressor Maps: Constant T[sub(t4)]/T[sub(t2)] Lines -- 12.6 Outer Loop -- 12.7 Inner Loop -- 12.8 Required Postprocessing Work -- Problems -- Index.
Weitere Ausg.:
ISBN 9781108491822
Weitere Ausg.:
ISBN 1108491820
Sprache:
Englisch
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