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系統識別號 U0026-0701202004562700
論文名稱(中文) 離心壓縮器性能和流量損失的CFD分析
論文名稱(英文) CFD ANALYSIS ON CENTRIFUGAL COMPRESSOR PERFORMANCE AND FLOW LOSSES
校院名稱 成功大學
系所名稱(中) 航空太空工程學系
系所名稱(英) Department of Aeronautics & Astronautics
學年度 108
學期 1
出版年 109
研究生(中文) 馬杰
研究生(英文) Daljit Majil Dhanabal
電子信箱 daljitaero96@gmail.com
學號 P46077014
學位類別 碩士
語文別 英文
論文頁數 150頁
口試委員 指導教授-賴維祥
口試委員-葉思沂
口試委員-闕志哲
中文關鍵字 CFD  離心壓縮機  葉輪  流量損失  等熵效率  渦輪增壓器,微型渦輪機 
英文關鍵字 CFD  Centrifugal Compressor  Impeller  Flow losses  Isentropic Efficiency  Turbocharger  Microturbine 
學科別分類
中文摘要 本研究工作主要在探討微型渦輪裝置中典型離心壓縮器的效率和流量損失。由於效率在離心壓縮器的性能中至關重要,而離心壓縮器的性能優於其他壓縮器。本研究設計一款單級離心壓縮器,並參考TD-08渦輪增壓器進行了基本分析計算,並使用ANSYS 2019 R3 CFX進行了1D,2D和3D數值模擬, CFD結果提供了後掠角的變化目前研究工作的另一個重要設計參數。使用現有文獻中的適當數學模型來計算處理離心壓縮器中的損失。通過更改葉輪的幾何參數,對葉片1和葉片2的流動損失進行了分析。經由分析葉片1和葉片2的不同幾何構型,發現了具有優化設計點的新的優化葉片,可以將葉片1的效率提高到2.7%,將葉片2的效率提高到1.9%。相對流場損失降低到令人滿意的水平。
英文摘要 The present work deals with efficiency and flows losses of a typical centrifugal compressor in microturbine. Since efficiency plays a vital role in the performance of centrifugal compressor. A single-stage centrifugal compressor has been designed with basic analytical calculation with reference of TD-08 turbocharger which is also undergone for 1D, 2D and 3D numerical simulation using an academic version of ANSYS 2019 R3 CFX, CFD results were found and variations of backswept angle gives another design parameter for current research work. Blade 1 and blade 2 has been analyzed for flow losses by changing geometry parameters of the impeller, discussed in existing research works. Flow losses have been calculated using an appropriate mathematical Model found in the existing literature which deals with losses in a centrifugal compressor. By analyzing Blade 1 and blade 2 for different geometry configuration, new optimized blades with optimized design points have been found that can enhance the efficiency up to 2.7% for blade 1 and 1.9% for blade 2. Relatively flow losses also reduced to a satisfactory level.
論文目次 Table of Contents
摘要…………..………………………………………………………………I
Abstract……………………………………………………………………...II
Acknowledgement………………………………………………………….III
Table of Contents…………………………………………………………...IV
List of Tables..……………………………………………………………VIII
List of Graphs ……………………………………………………………..XV
List of Figures……………...……………………………………….…..XVIII
Nomenclatures…………………………………………………………... XIX

Chapter 1: Introduction 1
1.1 Motivation 1
1.2 Microturbine 1
1.3 Turbocharger 5
1.4 Centrifugal Compressor 7
1.5 Research Problem 9
1.6 CFD 9
1.7 Meshing 11
1.8 Boundary Conditions 13
1.9 Turbulence Model 14
1.10 Computational tools 17
Chapter 2: Literature Survey 28
2.1 General Design Process of Centrifugal Compressor 28
2.2 Effect Splitter Blades 29
2.3 Effect of Diffuser Configuration 30
2.4 Numerical Simulation of Centrifugal Compressor 30
2.5 Influence of Volute Configuration 31
2.6Losses in Centrifugal Compressor 32
2.7 Computational Tools 33
Chapter 3: 1-D Design and Analysis 34
3.1 TD-08 34
3.2 Design Calculations 35
3.3 1-D Analysis 40
3.4 1-D Results 42
Chapter 4: 2-D Simulation of Impeller 43
4.1 Blade Generation 43
4.2 Throughflow Analysis 44
4.3 Boundary Conditions 43
4.4Results 45
Chapter 5: Grid Generation of Impeller 50
5.1 Turbogrid 50
5.2 Importance of Meshing 50
5.3 Mesh Counts and Settings 51
5.4 Meshed Impeller 53
5.5 Mesh Analysis 56
Chapter 6: 3D Simulation of Impeller 57
6.1 Turbulence Model 57
6.2 Boundary Conditions 59
6.3 Results 60
6.4 Analysis for Different Configuration 67
Chapter 7: Determination of Design Point for Reduced flow loss and Enhanced Performance 75
7.1 Blade 1 & Blade 2 75
7.2Influence of parameters 75
7.3 Optimization of Blade 1 76
7.4 Optimization of Blade 2 94
Chapter 8: Volute & Diffuser 116
8.1 Diffuser Model 119
8.2Volute Model 131
Chapter 9: Results & Discussion 134
9.1 Contours 136
9.2 Graphical Data of Blade 3 137
9.3 Graphical Data of Blade 4 140
9.4 Post Processing Data of Diffuser & Volute 142
9.5 Performance of Optimized Blade Design Points 144
9.6 Discussion of Optimized Blade Design Points 145
Chapter 10: Conclusions 148
References

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[3] Giovanna Cavazzini, Giorgio Pavesi, Alberto Santolin, Guido Ardizzon , Renzo Lorenzi; Using splitter Blades to improve suction Performance of Centrifugal Impeller pumps: journal of power and energy 2014
[4] S. Shaaban; Design optimization of a Centrifugal Compressor vaneless diffuser; International journal of refrigeration 2015
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[9] Rui Chen, Xiaoyang; Total Pressure Losses Mechanism of Centrifugal Compressor; Mechanical Engineering Research 2014
[10] Barend W. Botha, Adriaan Moolman; Determining the impact of the Different Losses on Centrifugal Compressor Design; R&D journal 2005.
[11] Cheng Xu, Michael Muller; Development and Design of a Centrifugal Compressor Volute; International Journal Of Rotating Machinery 2005.
[12] Munzer Shehadeh Yousef Ebaid, Qusai Zuhair Mohammad Al-Hamdan; Design of single stage Centrifugal Compressor as part of a microturbine running at 6000rpm, Developing a Maximum of 60kW Power Output; American Journal of Aerospace Engineering 2017.
[13] ANSYS TurboSystem User's Guide
[14] Applied Computational Fluid Dynamics, Lecture notes by André Bakker
[15] ANSYS VistaCCD User's Guide
[16] ANSYS Turbogrid User's Guide
[17] ANSYS Bladegen User's Guide
[18] ANSYS VistaTF User's Guide
[19] ANSYS CFX User's Guide
[20] CATIA User's Guide
[21] Centrifugal Compressors: a strategy for aerodynamic Design and Analysis / Ronald H. Aungier.
[22] Compressor aerodynamics / N.A. Cumpsty.

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