Contents Preface xi 1 Introduction 1 2 Model Testing 8 2.1 Falling Body in a Vacuum 2.2 Pendulum 2.3 Water Waves 2.4 Drag Force on a Sphere 2.5 Viscous Drag on a Flat Plate 2.6 Viscous Drag on General Bodies 2.7 Hydrofoil Lift and Drag 2.8 Screw Propeller 2.9 Drag on a Ship Hull 2.10 Propeller-Hull Interactions 2.11 Unsteady Force on an Accelerating Body 2.12 Vortex Shedding 9 10 11 13 16 18 20 24 27 32 34 38 2.13 Wave Force on a Stationary Body 2.14 Body Motions in Waves 2.15 Ship Motions in Waves 39 42 46 Problems References 3 The Motion of a Viscous Fluid 3.1 Description of the Flow 3.2 Conservation of Mass and Momentum 3.3 The Transport Theorem 3.4 The Continuity Equation 3.5 Euler's Equations 3.6 Stress Relations in a Newtonian Fluid 3.7 The Navier-Stokes Equations 3.8 Boundary Conditions 3.9 Body Forces and Gravity 3.10 The Flow between Two Parallel Walls 3.11 The Flow through a Pipe 3.12 External Flow past One Flat Plate 3.13 Unsteady Motion of a Flat Plate 46 50 53 54 56 57 59 59 60 62 63 64 65 66 67 69 3.14 Laminar Boundary Layers: Steady Flow Past a Flat Plate 3.15 Laminar Boundary Layers: Steady Two-Dimensional Flow 3.16 Laminar Boundary Layers: Closing Remarks 3.17 Turbulent Flow: General Aspects 3.18 Turbulent Boundary Layer on a Flat Plate 3.19 The 1/7-Power Approximation 3.20 Roughness Effects on Turbulent Boundary Layers 3.21 Turbulent Boundary Layers: Closing Remarks Problems References 4 The Motion of an Ideal Fluid 4.1 Irrotational Flows 4.2 The Velocity Potential 4.3 Bernoulli's Equations 4.4 Boundary Conditions 4.5 Simple Potential Flows 4.6 The Stream Function 72 78 85 85 88 95 96 98 98 100 102 103 105 107 109 111 115 4.7 The Complex Potential 4.8 Conformal Mapping 4.9 Separation of Variables 118 119 123 4.10 Fixed Bodies and Moving Bodies 4.11 Green's Theorem and Distributions of Singularities 4.12 Hydrodynamic Pressure Forces 4.13 Force on a Moving Body in an Unbounded Fluid 4.14 General Properties of the Added-Mass Coefficients 4.15 The Added Mass of Simple Forms 4.16 The Body-Mass Force 4.17 Force on a Body in a Nonuniform Stream 4.18 The Method of Images Problems References 5 Lifting Surfaces 5.1 Two-Dimensional Hydrofoil Theory 5.2 Linearized Two-Dimensional Theory 5.3 The Lifting Problem 5.4 Simple Foil Shapes 126 127 132 135 140 144 148 149 152 154 157 159 161 164 168 172 5.5 Drag Force on a Two-Dimensional Foil 5.6 Two-Dimensional Source and Vortex Distributions 5.7 Singular Integral Equations 5.8 Three-Dimensional Vortices 5.9 Three-Dimensional Planar Lifting Surfaces 5.10 Induced Drag 5.11 Lifting-Line Theory 5.12 Cavity Flows 5.13 Symmetric Cavity Flows 5.14 Supercavitating Lifting Foils 5.15 Unsteady Hydrofoil Theory 5.16 Oscillatory Time Dependence 5.17 The Sinusoidal Gust Problem 5.18 Transient Problems Problems References 6 Waves and Wave Effect 176 177 180 188 191 197 200 206 208 215 220 226 229 230 232 235 237 6.1 Linearized Free-Surface Condition 6.2 Plane Progressive Waves 238 240 6.3 Finite-Depth Effects 6.4 Nonlinear Effects 6.5 Mass Transport 6.6 Superposition of Plane Waves 6.7 Group Velocity 6.8 Wave Energy 6.9 Two-Dimensional Ship Waves 6.10 Three-Dimensional Ship Waves 6.11 The Method of Stationary Phase 6.12 Energy Radiation and Wave Resistance 6.13 Thin-Ship Theory of Wave Resistance 6.14 Wave Pattern Analysis 6.15 Body Response in Regular Waves 6.16 Hydrostatics 6.17 Damping and Added Mass 6.18 Wave-Exciting Force and Moment 243 247 251 252 257 260 266 270 275 278 281 284 285 290 295 300 6.19 Motion of Floating Bodies in Regular Waves 6.20 Ocean Waves 6.21 Motions of Bodies in Irregular Waves Problems References 7 Hydrodynamics of Slender Bodies 7.1 Slender Body in an Unbounded Fluid 7.2 Longitudinal Motion 7.3 The Lateral Force 7.4 Ship Maneuvering: The Hydrodynamic Forces 7.5 Ship Maneuvering: The Equations of Motion 7.6 Slender Bodies in Waves 7.7 Strip Theory for Ship Motions 7.8 Slender Bodies in Shallow Water Problems References 307 311 320 321 325 328 329 335 338 343 349 354 362 373 382 384 Appendix 387 Index 391