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叶顶间隙对多级轴流压气机匹配的影响规律及机理研究

摘要第3-4页
Abstract第4页
List of abbreviations (nomenclature)第7-8页
List of formula symbols第8-14页
Chapter 1: Introduction第14-16页
Chapter 2: Literature review第16-31页
    2.1 Matching of a multi-stage compressor第16-24页
        2.1.1 Explanation of stage matching according to Cumpsty第16-19页
        2.1.2 Stage characteristics in matching第19-20页
        2.1.3 Influence of Tip Clearance on Matching第20-23页
        2.1.4 Blockage in a compressor第23-24页
    2.2 Recent developments in matching第24-26页
        2.2.1 Inverse Method第24页
        2.2.2 Extension of single stage characteristic maps第24-26页
    2.3 Tip clearance flow第26-30页
        2.3.1 Tip clearance variation第28-29页
        2.3.2 Existence of optimum tip gap第29页
        2.3.3 Tip modification第29-30页
    2.4 Summary and aim definition第30-31页
Chapter 3: Methodology and setup第31-43页
    3.1 Methodology第31-33页
        3.1.1 Tip gap variation第32-33页
        3.1.2 Investigation Quantities第33页
    3.2 Numerical simulation第33-43页
        3.2.1 Basics on CFD第33-35页
        3.2.2 General setup第35页
        3.2.3 Turbulence Modelling第35-36页
        3.2.4 Computational mesh第36-38页
        3.2.5 Mesh close to solid elements: Y+ values第38-40页
        3.2.6 Mesh quality第40页
        3.2.7 Boundary conditions第40-41页
        3.2.8 Convergence第41页
        3.2.9 Simulation Procedure第41-42页
        3.2.10 Treatment of Redesigns第42-43页
Chapter 4: Simulation Results第43-74页
    4.1 Tip gap influence on the whole compressor第43-46页
    4.2 Tip gap influence on the stages of the compressor第46-51页
        4.2.1 Stall behaviour with increasing tip gap第49-51页
    4.3 Matching of the compressor: Theory第51-56页
    4.4 Matching of the compressor: Results第56-68页
        4.4.1 Matching at small tip gaps第56-58页
        4.4.2 Matching at medium tip gaps第58-59页
        4.4.3 Matching at large tip gaps第59-61页
        4.4.4 Tip gap influence on matching: Summary第61页
        4.4.5 Improving the Matching第61-68页
    4.5 Influence of the tip gap on flow angles第68-74页
        4.5.1 Influence of mass flow on stage efficiency and flow angles第70-72页
        4.5.2 Blade redesign in tip region第72-74页
Chapter 5: Conclusion and outlook第74-78页
    5.1 Conclusion第74-76页
    5.2 Outlook第76-78页
Bibliography第78-82页
致谢/Acknowledgement第82-84页
个人简历/Resume第84页

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