| Description |
1 online resource. |
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text file |
| Series |
Mechanical Engineering Theory and Applications Ser.
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Mechanical Engineering Theory and Applications Ser.
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| Bibliography |
Includes bibliographical references and index. |
| Summary |
"The aim of this book is to identify that extra high-pressure ratio (such as about 70) civil aero engine low emissions combustors and extra high fuel air ratio (FAR) (such as FAR greater than 0.051) military aero engine combustors make up the next generation of aero combustors. The aero thermal design of these combustors is very different from previous combustors and the major design points are proposed. Two types of high-pressure low emissions combustor design have been suggested: one is without fuel staging and the other is with fuel staging. The high FAR combustor design is brand new. The layout of the next-generation aero combustor is very different. There are no primary holes, no intermediate holes, and no dilution holes. They all have direct mixing combustion. For low-emissions combustors, it is lean direct mixing (LDM) combustion. For high-FAR combustors, it is stoichiometric direct mixing combustion. Combustion air fraction is very high (such as greater than 75%). That will induce idle condition lean blow out (LBO) issue. The present book has proposed several design approaches to solve idle LBO issue, which are effective. Pilot fuel air combustion is designed at idle condition. For civil combustor, maximum condition is designed for low emissions, while for high FAR combustor, maximum condition is designed for non-visible smoke, low luminous flame radiation and good combustion efficiency. For each type of combustor, the fuel air module configuration is designed, which is the most essential part of combustor design. The brand-new combustor cooling design has used a compound angle tangential inlet cooling hole configuration. Such a cooling design provides high cooling effectiveness. The diffuser configuration is totally new. It is an air bleeding diffuser, directly stretching forward to contact the dome. The bled air flows to the annular channel as cooling air. Aero combustor development is discussed in this book. In particular, the combustor developments from technology readiness level (TRL) 3 to TRL level 6 have been discussed in detail. Also reported is the technology to run combustor development tests correctly. Three topics of related combustion research by the present author are summarized in the brochure. They are: a. Fuel injection and co-flowing air combination. The key point is, for next generation combustor development, the designer should not only think about atomization. The combination of fuel injection and co-flowing air should be considered together as a whole device. b. Fuel spray evaporation calculation, the key is an engineering calculation of multi-component fuel evaporation shall be used. c. Non-luminous flame radiation calculation, which has been significantly updated. The present book is a summary of the author's ten years of study on next-generation aero combustors after retirement. It represents advanced aero combustor technology level"-- Provided by publisher. |
| Contents |
Intro -- TECHNICAL NOTES ON NEXTGENERATION AERO COMBUSTORDESIGN-DEVELOPMENT ANDRELATED COMBUSTIONRESEARCH -- TECHNICAL NOTES ON NEXTGENERATION AERO COMBUSTORDESIGN-DEVELOPMENT ANDRELATED COMBUSTIONRESEARCH -- Contents -- Preface -- Chapter 1Introduction to Aero CombustorDesign -- 1.1. Starting Points of Aero Combustor Design -- 1.1.1. Fuel Type -- 1.1.2. Engine Application -- 1.1.3. Requirements of Aero Combustor -- 1.1.4. Engine Cycle Parameters -- 1.1.5. Geometrical Dimension Limitations -- 1.2. Combustor Operational and Practical Requirements -- 1.3. Performance Requirements |
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1.3.1. Combustion Efficiency -- 1.3.2. Total Pressure Loss Coefficient -- 1.3.3. Liner Exit Distribution -- 1.3.4. Ground Idle Condition Lean Blow Out (LBO) -- 1.3.5. High Altitude Ignition -- 1.3.6. Smoke Level -- 1.3.7. Gaseous Exhaust Emissions -- 1.4. Combustor Working Parameters -- 1.4.1. Pressure -- 1.4.2. Temperature -- 1.4.3. Air Flow Rate -- 1.4.4. Fuel Flow Rate -- 1.4.5. Fuel Injector Pressure Drop -- 1.4.6. Combustor Fuel-Air Ratio (FAR) -- 1.4.7. Liner Fuel-Air Ratio -- 1.4.8. Liner Effective Flow Area ACd -- 1.4.9. Combustion Instability Pressure Fluctuation |
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1.5. Technology Development Program Aero Combustorand Type Engine Aero Combustor Design -- 1.6. Combustor Aero Thermal Design and MechanicalDesign -- 1.7. Preliminary Design and Detail Design -- Chapter 2Briefing on Next GenerationAero Combustor Design -- 2.1. What Are the Next Generation Aero Combustors? -- 2.2. High Pressure Civil Aero Combustor Can Not UseLPP Combustion -- 2.3. LDM Combustion Not LDI Combustion -- 2.4. High FAR Combustor Needs Direct Mixing Combustionbut Not Lean -- 2.5. Next Generation Aero Combustors Need Very HighCombustion Air Fractions |
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2.6. Next Generation Aero Combustor Layout -- Chapter 3Type One High Pressure LowEmissions Civil AeroCombustor (without FuelStaging) Preliminary Design -- 3.1. Determination of Single Module Combustor LinerDiameter -- 3.2. Fuel Air Module Configuration -- 3.3. Idle Condition Design -- 3.4. Design Air Flow Pattern -- 3.5. Main Fuel Air Combustion Design -- 3.6. Main Fuel Injection Design -- 3.7. Main Air Module Design -- 3.8. Single Module Tubular Combustor Cooling Design -- Chapter 4Type One High Pressure LowEmissions Combustor (withoutFuel Staging) Detail Design -- 4.1. Full Annular Liner Design |
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4.2. Transient Operation Design -- 4.3. Full Annular Combustor Cooling Design -- 4.3.1. Outer Liner Cooling Design -- 4.3.2. Non-Uniform Cooling Hole Axial Spacing -- 4.3.3. Inner Liner Cooling Design -- 4.4. Cooling Calculation -- 4.5. Combustor Inlet Diffuser Design -- Chapter 5Type Two High Pressure LowEmissions Combustor (with FuelStaging) Design -- 5.1. Fuel Air Module -- 5.2. Fuel Staging -- 5.3. Comparison of Two Types Low Emissions CombustorDesign -- Chapter 6Design of High FAR Combustor -- 6.1. Combustion Air Fraction -- 6.2. Combustion Organization Design |
| Local Note |
eBooks on EBSCOhost EBSCO eBook Subscription Academic Collection - North America |
| Subject |
Aircraft gas-turbines -- Combustion.
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Aircraft gas-turbines -- Combustion. |
| Genre/Form |
Electronic books.
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| Added Author |
Dang, Jin (Mechanical engineer), author.
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| Other Form: |
Print version: Chin, Jushan. Technical notes on next generation aero combustor design-development and related combustion research New York : Nova Science Publishers, Inc., [2021] 9781536197242 (DLC) 2021043692 |
| ISBN |
1685071090 |
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9781685071097 (electronic book) |
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9781536197242 (paperback) |
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