Kenneth Kuan-Yun Kuo, Ragini Acharya

Applications of Turbulent and Multiphase Combustion (eBook, PDF)

• Format: PDF

Produktbeschreibung

A hands-on, integrated approach to solving combustion problems in diverse areas An understanding of turbulence, combustion, and multiphase reacting flows is essential for engineers and scientists in many industries, including power genera-tion, jet and rocket propulsion, pollution control, fire prevention and safety, and material processing. This book offers a highly practical discussion of burning behavior and chemical processes occurring in diverse materials, arming readers with the tools they need to solve the most complex combustion problems facing the scientific community today. The second of a two-volume work, Applications of Turbulent and Multiphase Combustion expands on topics involving laminar flames from Professor Kuo's bestselling book Principles of Combustion, Second Edition, then builds upon the theory discussed in the companion volume Fundamentals of Turbulent and Multiphase Combustion to address in detail cutting-edge experimental techniques and applications not covered anywhere else. Special features of this book include: * Coverage of advanced applications such as solid propellants, burning behavior, and chemical boundary layer flows * A multiphase systems approach discussing basic concepts before moving to higher-level applications * A large number of practical examples gleaned from the authors' experience along with problems and a solutions manual Engineers and researchers in chemical and mechanical engineering and materials science will find Applications of Turbulent and Multiphase Combustion an indispensable guide for upgrading their skills and keeping up with this rapidly evolving area. It is also an excellent resource for students and professionals in mechanical, chemical, and aerospace engineering.

---

Dieser Download kann aus rechtlichen Gründen nur mit Rechnungsadresse in A, B, BG, CY, CZ, D, DK, EW, E, FIN, F, GR, HR, H, IRL, I, LT, L, LR, M, NL, PL, P, R, S, SLO, SK ausgeliefert werden.

Produktdetails

• Verlag: John Wiley & Sons
• Seitenzahl: 600
• Erscheinungstermin: 13. April 2012
• Englisch
• ISBN-13: 9781118130681
• Artikelnr.: 38235037

Autorenporträt

Kenneth K. Kuo is Distinguished Professor of Mechanical Engineering and Director of the High Pressure Combustion Laboratory (HPCL) in the Department of Mechanical and Nuclear Engineering of the College of Engineering at The Pennsylvania State University.??Professor Kuo established the HPCL and is recognized as one of the leading researchers and experts in propulsion-related combustion. Ragini Acharya is Senior Research Scientist at United Technologies Research Center. She received her PhD from The Pennsylvania State University in 2008. Dr. Acharya's research expertise includes development of multiphysics, multiscale, multiphase models, fire dynamics, numerical methods, and scientific computing. She has authored or coauthored multiple technical articles in these areas.

Inhaltsangabe

Preface xvii

1 Solid Propellants and Their Combustion Characteristics 1

1.1 Background of Solid Propellant Combustion, 4

1.1.1 Definition of Solid Propellants, 4

1.1.2 Desirable Characteristics of Solid Propellants, 4

1.1.3 Calculation of Oxygen Balance, 5

1.1.4 Homogeneous Propellants, 6

1.1.5 Heterogeneous Propellants (or Composite Propellants), 7

1.1.6 Major Types of Ingredients in Solid Propellants, 8

1.1.7 Applications of Solid Propellants, 16

1.1.8 Material Characterization of Propellants, 16

1.1.9 Thermal Profile in a Burning Solid Propellant, 18

1.2 Solid-Propellant Rocket and Gun Performance Parameters, 43

1.2.1 Performance Parameters of a Solid Rocket Motor, 44

1.2.2 Performance Parameters of Solid-Propellant Gun Systems, 61

2 Thermal Decomposition and Combustion of Nitramines 72

2.1 Thermophysical Properties of Selected Nitramines, 76

2.2 Polymorphic Forms of Nitramines, 78

2.2.1 Polymorphic Forms of HMX, 80

2.2.2 Polymorphic Forms of RDX, 82

2.3 Thermal Decomposition of RDX, 88

2.3.1 Explanation of Opposite Trends on alpha- and ß-RDX Decomposition with Increasing Pressure, 90

2.3.2 Thermal Decomposition Mechanisms of RDX, 92

2.3.3 Formation of Foam Layer Near RDX Burning Surface, 106

2.4 Gas-Phase Reactions of RDX, 109

2.4.1 Development of Gas-Phase Reaction Mechanism for RDX Combustion, 111

2.5 Modeling of RDX Monopropellant Combustion with Surface Reactions, 125

2.5.1 Processes in Foam-Layer Region, 126

2.5.2 Reactions Considered in the Foam Layer, 128

2.5.3 Evaporation and Condensation Consideration for RDX, 128

2.5.4 Boundary Conditions, 130

2.5.5 Numerical Methods Used for RDX Combustion Model with Foam Layer, 131

2.5.6 Predicted Flame Structure, 132

3 Burning Behavior of Homogeneous Solid Propellants 143

3.1 Common Ingredients in Homogeneous Propellants, 147

3.2 Combustion Wave Structure of a Double-Base Propellant, 148

3.3 Burning Rate Behavior of a Double-Base Propellant, 149

3.4 Burning Rate Behavior of Catalyzed Nitrate-Ester Propellants, 155

3.5 Thermal Wave Structure and Pyrolysis Law of Homogeneous Propellants, 158

3.5.1 Dark Zone Residence Time Correlation, 166

3.6 Modeling and Prediction of Homogeneous Propellant Combustion Behavior, 167

3.6.1 Multi-Ingredient Model of Miller and Anderson, 171

3.7 Transient Burning Characterization of Homogeneous Solid Propellant, 187

3.7.1 What is Dynamic Burning?, 188

3.7.2 Theoretical Models for Dynamic Burning, 190

Chapter Problems, 208

4 Chemically Reacting Boundary-Layer Flows 209

4.1 Introduction, 210

4.1.1 Applications of Reacting Boundary-Layer Flows, 211

4.1.2 High-Temperature Experimental Facilities Used in Investigation, 211

4.1.3 Theoretical Approaches and Boundary-Layer Flow Classifications, 212

4.1.4 Historical Survey, 212

4.2 Governing Equations for Two-Dimensional Reacting Boundary-Layer Flows, 216

4.3 Boundary Conditions, 221

4.4 Chemical Kinetics, 224

4.4.1 Homogeneous Chemical Reactions, 224

4.4.2 Heterogeneous Chemical Reactions, 226

4.5 Laminar Boundary-Layer Flows with Surface Reactions, 229

4.5.1 Governing Equations and Boundary Conditions, 229

4.5.2 Transformation to (xi, eta) Coordinates, 229

4.5.3 Conditions for Decoupling of Governing Equations and Self-Similar Solutions, 232

4.5.4 Damk¨ohler Number for Surface Reactions, 233

4.5.5 Surface Combustion of Graphite Near the Stagnation Region, 234

4.6 Laminar Boundary-Layer Flows With Gas-Phase Reactions, 239

4.6.1 Governing Equations and Coordinate Transformation, 239

4.6.2 Damk¨ohler Number for Gas-Phase Reactions, 240

4.6.3 Extension to Axisymmetric Cases, 242

4.7 Turbulent Boundary-Layer Flows with Chemical Reactions, 243

4.7.1 Introduction, 243

4.7.2 Boundary-Layer Integral Matrix Procedure of Evans, 243

4.7.3 Marching-Integration Procedure of Patankar and Spalding, 257

4.7.4 Metal Erosion by Hot Reactive Gases, 272

4.7.5 Thermochemical Erosion of Graphite Nozzles of Solid Rocket Motors, 281

4.7.6 Turbulent Wall Fires, 316

5 Ignition and Combustion of Single Energetic Solid Particles 330

5.1 Why Energetic Particles Are Attractive for Combustion Enhancement in Propulsion, 335

5.2 Metal Combustion Classification, 336

5.3 Metal Particle Combustion Regimes, 341

5.4 Ignition of Boron Particles, 344

5.5 Experimental Studies, 351

5.5.1 Gasification of Boron Oxides, 352

5.5.2 Chemical Kinetics Measurement, 353

5.5.3 Boron Ignition Combustion in a Controlled Hot Gas Environment, 354

5.6 Theoretical Studies of Boron Ignition and Combustion, 362

5.6.1 First-Stage Combustion Models, 362

5.6.2 Second-Stage Combustion Models, 365

5.6.3 Chemical Kinetic Mechanisms, 365

5.6.4 Methods for Enhancement of Boron Ignition, 367

5.6.5 Verification of Diffusion Mechanism of Boron Particle Combustion, 369

5.6.6 Chemical Identification of the Boron Oxide Layer, 371

5.7 Theoretical Model Development of Boron Particle Combustion, 372

5.7.1 First-Stage Combustion Model, 372

5.7.2 Second-Stage Combustion Model, 377

5.7.3 Comparison of Predicted and Measured Combustion Times, 381

5.8 Ignition and Combustion of Boron Particles in Fluorine-Containing Environments, 384

5.8.1 Multidiffusion Flat-Flame Burner, 385

5.8.2 Test Conditions, 387

5.8.3 Experimental Results and Discussions, 388

5.8.4 Surface Reaction of (BO)n with HF(g), 393

5.8.5 Surface Reaction of (BO)n with F(g), 394

5.8.6 Governing Equations During the First-Stage Combustion of Boron Particles, 395

5.8.7 Model for the "Clean" Boron Consumption Process (Second-Stage Combustion), 396

5.8.8 Numerical Solution, 403

5.9 Combustion of a Single Aluminum Particle, 410

5.9.1 Background, 413

5.9.2 Physical Model, 414

5.9.3 Aluminum-Combustion Mechanism, 417

5.9.4 Condensation Aspect of Model of Beckstead et al. (2005), 419

5.9.5 General Mathematical Model, 422

5.9.6 Boundary Conditions, 424

5.9.7 Dn Law in Aluminum Combustion, 429

5.10 Ignition of Aluminum Particle in a Controlled Postflame Zone, 437

5.11 Physical Concepts of Aluminum Agglomerate Formation, 439

5.11.1 Evolution Process of Condensed-Phase Combustion Products, 440

5.12 Combustion Behavior for Fine and Ultrafine Aluminum Particles, 443

5.12.1 10 mum Aluminum Particle--Early Transitional Structure, 444

5.12.2 100 nm Aluminum Particle--Late Transitional Structure, 446

5.13 Potential Use of Energetic Nanosize Powders for Combustion and Rocket Propulsion, 447

Chapter Problems, 452

Project No. 1, 452

Project No. 2, 454

6 Combustion of Solid Particles in Multiphase Flows 456

6.1 Void Fraction and Specific Particle Surface Area, 462

6.2 Mathematical Formulation, 463

6.2.1 Formulation of the Heat Equation for a Single Particle, 469

6.3 Method of Characteristics Formulation, 472

6.3.1 Linearization of the Characteristic Equations, 476

6.4 Ignition Cartridge Results, 477

6.5 Governing Equations for the Mortar Tube, 484

6.5.1 Initial Conditions, 488

6.5.2 Boundary Conditions, 488

6.5.3 Numerical Methods for Mortar Region Model, 490

6.6 Predictions of Mortar Performance and Model Validation, 491

6.7 Approximate Riemann Solver: Roe-Pike Method, 496

6.8 Roe's Method, 499

6.9 Roe-Pike Method, 501

6.10 Entropy Condition and Entropy Fix, 502

6.11 Flux Limiter, 503

6.12 Higher Order Correction, 504

6.13 Three-Dimensional Wave Propagation, 504

Appendix A: Useful Vector and Tensor Operations 507

Appendix B: Constants and Conversion Factors Often Used in Combustion 534

Appendix C: Naming of Hydrocarbons 538

Appendix D: Particle Size-U.S. Sieve Size and Tyler Screen Mesh Equivalents 541

Bibliography 544

Index 571