Hydrodynamics of Ship Propellers

Technical introduction to ship propeller hydrodynamics, for researchers in ocean technology, naval architecture, mechanical engineering.

This book deals with flows over propellers operating behind ships, and the hydrodynamic forces and moments which the propeller generates on the shaft and on the ship hull. The first part of the book is devoted to fundamentals of the flow about hydrofoil sections and wings, propellers in uniform flow and pragmatic design guides for analysis and performance. The second part covers the development of unsteady section and blade forces arising from operation in non-uniform hull wakes. The problem of a non-cavitating, wide-bladed propeller in a wake is treated by a new and completely developed theory. A final chapter discusses the optimisation of efficiency of compound propulsors. The authors have taken great care to clearly describe physical concepts and mathematical steps. An appendix provides a concise introduction to (or reprise of) the mathematical techniques used.

Preface; Notation; Abbreviations; 1. Brief review of basic hydrodynamic theory; 2. Properties of distributions of singularities; 3. Kinematic boundary conditions; 4. Steady flows about thin, symmetrical sections in two-dimensions; 5. Pressure distributions and lift on flat and cambered sections at small angles of attack; design of hydrofoil sections; 7. Real fluid effects and comparisons of theoretically and experimentally determined characteristics; 8. Cavitation; 9. Actuator disk theory; 10. Wing theory; 11. Lifting-line representation of propellers; 12. Propeller design via computer and practical considerations; 13. Hull-wake characteristics; 14. Pressure fields generated by blade loading and thickness in uniform flows; comparisons with measurements; 15. Pressure fields generated by blade loadings in hull wakes; 16. Vibratory forces on simple surfaces; 17. Unsteady forces on two-dimensional sections and hydrofoils of finite span in gusts; 18. Lifting-surface theory; 19. Correlations of theories with measurements; 20. Outline of theory of intermittently cavitating propellers; 21. Forces on simple bodies generated by intermittent cavitation; 22. Pressures on hulls of arbitrary shape generated by blade loading, thickness and intermittent cavitation; 23. Propulsor configurations for increased efficiency; Appendices; Mathematical compendium; References; Index.

Deals with flows over propellers and the hydrodynamic forces and moments which the propeller generates on the shaft and on the ship hull. The first part of the book is devoted to fundamentals of uniform flow. The second part covers unsteady section and blade forces arising from operation in non-uniform hull wakes.