Introduction to the Book | p. 1 |
What is Hydrodynamics? | p. 1 |
What is Vibration? | p. 2 |
Interrelationship of Hydrodynamics and Vibration | p. 4 |
Overview of Contents | p. 5 |
References | p. 7 |
Basic Theory of Hydrodynamics | p. 9 |
Introduction | p. 9 |
Equations of Motion | p. 10 |
Fluid Flow and Continuity | p. 10 |
Rotational Flow | p. 11 |
Potential Function | p. 12 |
Laplace Equation | p. 12 |
Bernoulli's Equations | p. 13 |
Laminar and Turbulent Flow | p. 14 |
Steady Drag and Lift Force | p. 18 |
Vorticity Parameter, Reduced Velocity and Strouhal Number | p. 24 |
Moving Structures in Fluid | p. 26 |
Free Surface Flows | p. 34 |
Kinematical Condition at the Floor | p. 36 |
Kinematical Condition at the Free Surface | p. 37 |
Dynamic Condition at the Free Surface | p. 38 |
Linear Wave Theory | p. 39 |
Oscillatory Drag and Inertia Forces | p. 42 |
Summary of Hydrodynamic Forces | p. 45 |
Combined Steady and Oscillating Flows | p. 46 |
Exercises | p. 49 |
References | p. 50 |
Basic Theory of Vibration | p. 51 |
Introduction | p. 51 |
Periodic Vibration | p. 52 |
Linear Single Degree of Freedom System | p. 54 |
Transient Response | p. 56 |
Forced Linearly Damped System | p. 63 |
Energy Dissipation | p. 68 |
Mechanical Oscillation | p. 69 |
Nonlinear Single Degree of Freedom System | p. 73 |
Phase-Plane Diagram | p. 75 |
Nonlinearly Damped Free Vibration | p. 76 |
Nonlinearly Damped Forced Vibration | p. 80 |
General Nonlinear Damping | p. 81 |
Nonlinear Restoring Force | p. 82 |
Duffing's Equation | p. 86 |
Nonlinear Damping and Restoring Force | p. 90 |
Vibration of a Rigid Body | p. 95 |
Linear Multi-Degree Freedom System | p. 100 |
Two Degree-of-Freedom System | p. 100 |
Multi-Mass System | p. 106 |
Multiple Degree-of-Freedom System | p. 107 |
Nonlinear Multiple Degree of Freedom Systems | p. 108 |
Continuous Systems | p. 110 |
Modes of Vibration | p. 111 |
Vibration of an Elastic Structure | p. 112 |
Self-Excited Vibration | p. 115 |
Exercises | p. 116 |
References | p. 118 |
Experiments in Hydrodynamics and Vibration | p. 119 |
Introduction | p. 119 |
Planning a Model Test | p. 120 |
Benefits of Model Testing | p. 121 |
Requirements of a Facility | p. 121 |
Description of Test Facilities | p. 122 |
Current Generating Facility | p. 122 |
Towing Tanks | p. 127 |
Planar Motion Mechanism | p. 129 |
Wave Generating Facility | p. 132 |
Random Wave Generation | p. 134 |
Wind Tunnels | p. 135 |
Modeling Laws | p. 137 |
Dimensional Method | p. 137 |
Froude Similitude | p. 139 |
Reynolds Similitude | p. 140 |
Strouhal Similitude | p. 143 |
Cauchy Similitude | p. 144 |
Dynamic Similarity | p. 146 |
Hydrodynamic Model | p. 148 |
Modeling of Rigid Structure | p. 148 |
Modeling of Elastic Structure | p. 149 |
Modeling of Mooring Line | p. 150 |
Modeling of Riser | p. 153 |
Vibration Instruments | p. 158 |
Accelerometers | p. 160 |
Motion Sensors | p. 161 |
Load Measuring Device | p. 163 |
Design of a Load Cell | p. 165 |
Design of a Propeller Dynamometer | p. 169 |
Waterproofing of Transducers | p. 170 |
Excitation Level for Transducers | p. 171 |
In-Situ Vibration Measurements | p. 171 |
Exercises | p. 173 |
References | p. 173 |
Statistical Theory in Vibration | p. 175 |
Introduction | p. 175 |
Random Variables and Processes | p. 176 |
Probability Distribution Function | p. 178 |
Probability Density Function | p. 179 |
Gaussian Distribution | p. 181 |
Rayleigh Distribution | p. 183 |
Weibull Distribution | p. 184 |
Gumbel Distribution | p. 185 |
Power Spectrum and Statistics | p. 186 |
Extreme Values and Envelope Functions | p. 189 |
Extreme Value Function | p. 189 |
Design Extreme Value | p. 190 |
Response Spectra | p. 193 |
Transfer Function | p. 194 |
Cross Spectral Analysis | p. 198 |
Error Analysis | p. 199 |
Exercises | p. 202 |
References | p. 206 |
Random Vibration | p. 207 |
Introduction | p. 207 |
Random Single Degree of Freedom Linear System | p. 207 |
Non-Harmonic Vibration | p. 208 |
Random Vibration | p. 211 |
Response of SDOF System to Random Input | p. 212 |
Frequency Domain Analysis | p. 212 |
Frequency domain linear system | p. 213 |
Frequency domain nonlinear system | p. 214 |
Time Domain Analysis | p. 216 |
Time domain linear system | p. 217 |
Time domain nonlinear system | p. 218 |
Random Decrement Technique | p. 222 |
Random Response of Multi-Degree of Freedom System | p. 225 |
Multi-Moduled Time-Domain Solution | p. 225 |
Response of Nonlinear Systems to Random Input | p. 231 |
Stochastic Linearization of Force | p. 231 |
Stochastic Linearization of Response | p. 233 |
Numerical Methods in Stochastic Dynamics | p. 235 |
Eigenvalues and Eigenvectors | p. 235 |
Structure Finite Element Method | p. 237 |
Response Statistics in Random Excitation | p. 239 |
Exercises | p. 245 |
References | p. 247 |
Fluid Structure Interaction | p. 249 |
Introduction | p. 249 |
Structures in Steady Flow | p. 250 |
Vertical Cylinder in Uniform Flow | p. 254 |
Vertical Cylinder in Shear Flow | p. 257 |
Horizontal Cylinder in Uniform Flow | p. 261 |
Horizontal Cylinder in Shear Flow | p. 263 |
Blockage Factor in Steady Flow | p. 269 |
Structures in Waves | p. 271 |
Linear Diffraction Theory | p. 272 |
Two-Body Interaction Problem | p. 276 |
Fluid-Structure Finite Element Method | p. 278 |
Stability of Motion | p. 279 |
Structure Damping | p. 284 |
Damping of a TLP in Heave | p. 285 |
Damping in Ship Roll | p. 286 |
Skin friction | p. 287 |
Eddy making damping | p. 290 |
Lift damping | p. 294 |
Wave damping | p. 295 |
Bilge-keel damping | p. 295 |
Damping results | p. 297 |
Roll Suppression | p. 302 |
Tensioned Riser Analysis | p. 303 |
Flexible Line Analysis | p. 308 |
Coupled Dynamic Analysis | p. 311 |
Exercises | p. 313 |
References | p. 314 |
Fluid Induced Vibration | p. 317 |
Introduction | p. 317 |
Flow-Induced Vortices | p. 319 |
Formation of Vortices | p. 319 |
Reynolds and Strouhal Dependence | p. 321 |
Vortex Formation in Steady Uniform Flow | p. 321 |
Vortex Formation in Shear Flow | p. 323 |
Vortex Formation in Oscillatory Flow | p. 325 |
Theory of Vortex-Induced Vibration | p. 327 |
Empirical VIV Models | p. 330 |
Transverse Oscillator Model | p. 331 |
Analytic VIV Model | p. 335 |
Eigenfrequencies of Structures | p. 344 |
Vortex-Induced Vibration of Risers, Cables and Pipelines | p. 346 |
VIV of Risers | p. 346 |
VIV of Cables | p. 348 |
VIV of Subsea Pipeline | p. 355 |
Interference Effect in Vortex-Induced Vibration | p. 357 |
VIV between Two Closely Spaced Cylinders | p. 358 |
VIV among Multiple Cylinders | p. 361 |
VIV Spoilers | p. 362 |
Streamline Geometry | p. 363 |
Super Smooth Surface | p. 364 |
External Damper | p. 365 |
Pneumatic Damper | p. 367 |
Damping Plate | p. 367 |
Helical Strakes | p. 369 |
Wavy Edge | p. 371 |
External Disturbance | p. 372 |
Porosity | p. 374 |
Tension Control | p. 376 |
Exercises | p. 377 |
References | p. 377 |
Practical and Design Case Studies | p. 383 |
Introduction | p. 383 |
Damping Experiment of a Tethered TLP Caisson | p. 383 |
Caisson with Leaf Springs | p. 384 |
Caisson with Coil Springs | p. 387 |
Field Experiment of Vibration of a Riser | p. 390 |
Collision Within Riser Group | p. 390 |
Towing of Riser | p. 393 |
Impact Loading on a Fixed Platform | p. 397 |
Current Effect on Jacket | p. 398 |
Jacket Structure in Regular Waves | p. 400 |
Pile Structure in Random Waves | p. 402 |
Sloshing in a Hydroelastic Vertical Caisson | p. 405 |
Simplified Sloshing Theory | p. 407 |
Elastic Model Design | p. 415 |
Elastic Model Tests | p. 416 |
Articulated Tower Instability in Waves | p. 422 |
Theory of Inclined Tower | p. 422 |
Model Test of Inclined Tower | p. 424 |
Analysis of SLIM Response | p. 425 |
Hydroelasticity of a Multi-Moduled Structure | p. 428 |
Mobile Offshore Base | p. 429 |
Analysis of a MOB | p. 430 |
Dynamics of a Flexible Jack-Up Unit | p. 436 |
Hydrodynamic Jack-Up Analysis | p. 437 |
Jack-Up Structural Analysis | p. 438 |
Wave Response Method | p. 439 |
Response in Regular Waves | p. 441 |
Impact of a Submarine with a Jacket Structure | p. 444 |
Safety Check on Residual Strength | p. 445 |
Structural Damping | p. 446 |
References | p. 449 |
List of Symbols | p. 453 |
List of Acronyms | p. 457 |
Conversion Factors | p. 457 |
Author Index | p. 459 |
Subject Index | p. 463 |
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