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轴流风扇的优化设计及其对电机冷却性能的影响

摘要第5-6页
Abstract第6-7页
Chapter 1 Introduction第11-21页
    1.1 Research Purpose and Significance第11-13页
    1.2 International and Domestic Scope of Research第13-19页
        1.2.1 Importance of Axial Flow Fan and Scope of Research第13-16页
        1.2.2 The Research Scope of Numerical Analysis第16-17页
        1.2.3 Scope of Research on Electric Motors第17-18页
        1.2.4 Scope of CFD Analysis of Turbo-machinery第18-19页
    1.3 Main Contents of the Research第19-21页
Chapter 2 Theory of the Axial Flow Fan第21-38页
    2.1 Overview of Fans第21-22页
    2.2 Difference between Fans, Blowers and Compressors第22页
    2.3 Axial Flow Fans第22-24页
        2.3.1 Types of Axial Flow Fan第23-24页
    2.4 Motion and Velocity Triangle第24-25页
        2.4.1 Motion of a Fluid over a Blade第24-25页
        2.4.2 Triangle of Velocity第25页
    2.5 Lift Theory of Axial Flow Fan第25-33页
        2.5.1 Geometric Parameters of the Airfoil第25-26页
        2.5.2 Aerodynamic characteristics of Individual and Connected airfoil第26-30页
        2.5.3 Equation of Energy第30页
        2.5.4 Selection of Fan第30-33页
    2.6 Performance of Axial Flow Fan第33-36页
        2.6.1 Theoretical Analysis of the Factors Affecting the Fan Performance第34-36页
    2.7 Summary第36-38页
Chapter 3 Computational Method-Computational Fluid Dynamics第38-53页
    3.1 Overview of Computational Fluid Dynamics第38-40页
    3.2 Advantages of Computational Fluid Dynamics第40-41页
    3.3 Applications of Computational Fluid Dynamics第41-43页
    3.4 Computational Fluid Dynamics Basic第43-47页
        3.4.1 Flow Physics Modeling第43-44页
        3.4.2 Turbulence Closure第44-45页
        3.4.3 Numerical Simulation Technique第45-47页
    3.5 Governing Equations of Computational Fluid Dynamics第47-48页
        3.5.1 Mass Conservation Equation第47页
        3.5.2 Conservation Equation of Momentum第47-48页
    3.6 Turbulence第48-49页
    3.7 Discretization Method第49-51页
    3.8 Summary第51-53页
Chapter 4 Physical Model and Mesh Generation第53-63页
    4.1 Overview of Solidworks第53-55页
    4.2 Establishment of Physical Models第55-57页
        4.2.1 Blade or Airfoil第56-57页
        4.2.2 Twist of a Blade第57页
        4.2.3 Number of blades第57页
    4.3 Overview of Meshing第57-58页
    4.4 Types of Mesh第58页
        4.4.1 Structured Grids第58页
        4.4.2 Unstructured Grids第58页
    4.5 Mesh Generation Process第58-59页
    4.6 General Measures of Mesh Quality第59页
    4.7 Commercial Meshing Software第59-60页
    4.8 Meshing Flow Diagram第60页
    4.9 Import and Repair of the Geometry第60页
    4.10 Mesh Generation and Independence Test第60-61页
    4.11 Summary第61-63页
Chapter 5 Results and Discussion第63-79页
    5.1 Overview第63-64页
    5.2 Steps in Solving CFD Problem第64页
    5.3 Computational Method and Boundary Conditions第64-67页
        5.3.1 Turbulence Models and its Selection第66页
        5.3.2 Overview of Shear-Stress Transport (SST) k-ω Model第66页
        5.3.3 Detail of Equations of Shear-Stress Transport (SST) k-ω Model第66-67页
    5.4 Flow in a Rotating Reference Frame第67-70页
        5.4.1 Introduction第67-68页
        5.4.2 MRF Model第68-69页
        5.4.3 SRF Model第69页
        5.4.4 Convergence第69-70页
    5.5 Discussion on Results第70-78页
        5.5.1 Relation of Pressure and Volumetric Flow Rate第70-71页
        5.5.2 Relation of Pressure and Efficiency第71页
        5.5.3 Effect of Installation Angle on Volumetric Flow Rate and Efficiency第71-73页
        5.5.4 Pressure and Velocity Contours on the Blades第73-74页
        5.5.5 Effect of Number of Blades on Volumetric Flow Rate第74-76页
        5.5.6 Comparison of Turbulence Models第76-78页
    5.6 Summary第78-79页
Chapter 6 Effect of Turbulence Intensity on the Cooling Performance of the Motor第79-90页
    6.1 Overview第79页
    6.2 Effect of Physical Model on Numerical Analysis第79-81页
    6.3 Effect of Blade trimming on the Volumetric Flow Rate第81-83页
    6.4 Effect of Turbulent Intensity on Fan and Motor第83-88页
        6.4.1 Discussion on Turbulence Intensity第83页
        6.4.2 Effect of Turbulence Intensity第83-87页
        6.4.3 Effect of Turbulence Intensity on Heat Transfer of the Motor第87-88页
    6.5 Accuracy of Numerical Results第88页
    6.6 Summary第88-90页
Conclusion第90-92页
References第92-97页
Academic Achievements第97-98页
Expression of Thanks第98页

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