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The fluid dynamic basis for actuator disc and rotor theories /
Annotation
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Amsterdam, Netherlands :
IOS Press,
2018.
|
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Intro; Title Page; Contents; Preface; Reading guide; Acknowledgements; Nomenclature; 1. More than a century of rotor research; 1.1. Introduction; 1.2. History of the actuator disc momentum theory; 1.2.1. The British School; 1.2.2. The German and Russian School; 1.2.3. The contribution of Joukowsky and Betz to the vortex theory of propellers; 1.2.4. The Betz-Joukowsky limit for wind turbines; 1.3. From actuator disc to rotor aerodynamics; 1.4. Why this book?; 2. Force fields in fluid dynamics; 2.1. Introduction; 2.2. The equation of motion and the coordinate systems
- 2.3. Equivalence of the kinematic and dynamic methods2.4. Conservative and non-conservative force fields; 2.5. Force fields and energy; 2.5.1. Work done by force fields; 2.5.2. Choice of reference system; 2.5.3. Pressure as a conservative force in momentum balances; 2.5.4. Pressure interpreted as potential energy; 2.6. Definition of (non- )conservative forces as used in this book; 2.7. Evaluation; 3. Force fields and vorticity; 3.1. Introduction; 3.2. The role of Helmholtz's conservation laws; 3.3. Generation of actuator disc vorticity; 3.4. Convection of actuator disc vorticity
- 3.5. Convection of rotor vorticity3.6. Evaluation; 4. The disc as representation of a rotor; 4.1. Introduction; 4.2. Loads and power of a Joukowsky disc and rotor; 4.2.1. The actuator disc equation; 4.2.2. The rotor blade; 4.2.3. Power and thrust coefficients for Joukowsky discs / rotors; 4.3. The transition from a B-bladed rotor to the Joukowsky disc; 4.4. Comparison of the flow fields of a disc and rotor; 4.5. Evaluation; 5. Analysis of Froude's actuator disc flows; 5.1. Introduction; 5.2. One-dimensional momentum theory; 5.2.1. The momentum balance
- 5.2.2. Momentum theory without conservative forces5.2.3. Momentum theory including conservative forces; 5.2.4. Momentum theory applied per stream annulus; 5.3. Numerical assessment of Froude's actuator disc performance; 5.3.1. The model and accuracy of computation; 5.3.2. Comparison of calculated performance with momentum theory results; 5.3.3. Comparison with experimental results; 5.4. Flow details; 5.4.1. Flow and pressure patterns; 5.4.2. Properties of the wake boundary; 5.4.3. Pressure and velocity distribution at the disc; 5.4.4. Pressure at the axis; 5.4.5. Momentum balance per annulus
- 5.5. An engineering model for the velocity at a wind turbine disc5.6. Evaluation; 6. Analysis of Joukowsky's actuator disc flows; 6.1. Introduction; 6.2. Two dimensional momentum theory; 6.2.1. The equations for a Joukowsky disc; 6.2.2. The disc load; 6.2.3. The far wake outside the vortex core; 6.2.4. The vortex core; 6.2.5. The momentum, mass and energy balance; 6.3. Limit values of the Joukowsky momentum theory; 6.3.1. Results for, 0.; 6.3.2. Propeller discs with a wake of constant radius and with wake expansion; 6.3.3. The static disc or disc in hover