MSc in Oil & Gas and Offshore Engineering

Course Information Package

Course Unit TitleADVANCED OFFSHORE HYDRODYNAMICS AND WAVE MECHANICS
Course Unit CodeMOE508
Course Unit DetailsMSc Oil & Gas and Offshore Engineering (Required Courses) -
Number of ECTS credits allocated7
Learning Outcomes of the course unitBy the end of the course, the students should be able to:
  1. Hydrostatics and floating stability.
  2. Description of the wave environment through analytical theories and stochastic approaches.
  3. Description of the wave environment through analytical theories and stochastic approaches.
  4. Evaluation of wave loading on slender marine structures in real fluids (Morison Type Loading).
  5. Evaluation of the wave loading and motions of large – volume structures using analytical, numerical and approximate methodologies with particular emphasis to special geometric configurations commonly used in offshore applications.
  6. Evaluation of the wave loading and motions spectral characteristics in irregular seas.
Mode of DeliveryFace-to-face
PrerequisitesNONECo-requisitesNONE
Recommended optional program componentsNONE
Course Contents

Module A -Hydrostatic and stability analysis of floating systems

·        Buoyancy forces.

·        Initial stability.

·        The wall sided formula and large angle stability.

·        The pressure integration technique.

·        Trim and stability booklet.

·        Certifying authorities regulations.

 

Module B –Deterministic Wave Theories

·        Linear wave Theory.

·        Stokes waves of 2nd, 3rd and 5thorder.

·        Wave Groups.

·        Mean wave energy and energy flux. 

·        Transformation of weaves approaching to the shore.

 

Module C -Stochastic representation of sea waves

·        Basic properties of random waves.

·        Sea power spectra.

·        Short- and long-term wave statistics.

·        Statistics of maxima and extremes.

·        Definition of environmental design conditions.

 

Module D -Potential flow phenomena around 2D structures in unbounded fluid domains

·        Constant potential flow phenomena around restrained and moving cylindrical and arbitrarily shaped cross-sections.

·        Introduction to the concept of hydrodynamic mass.

 

Module E - Wave induced loads on slender marine structures

·        Morison type loading for restrained and moving bodies.

·        Methods for equivalent linearization of the non-linear drag forces. 

·        Relative importance of inertia versus drag dominated force components

·        Applications.

 

Module F - Wave induced loads and motions on large volume structures

·        Diffraction and radiation problems: Linear theory.

·        Concepts of hydrodynamic mass, damping and wave exciting forces.

·        Analytical,numerical and approximate solutions.

·        Simplified analysis based on Froude - Krylov concept.

·        Representative results for typical offshore structures.

·        Equation of motions of arbitrarily shaped floating bodies in waves.

·        Spectral approach to wave loads and motion predictions

 

Recommended and/or required reading:
Textbooks
  • O.M. Faltinsen, “Sea Loads on Ships and Offshore Structures”, Cambridge University Press, Cambridge Ocean Technology Series, Cambridge, New York, 1990
  • J.N. Newman, “Marine Hydrodynamics”, MIT Press, Cambridge, Mass., 1977
  • T. Sarpkaya, “Wave Forces on Offshore Structures”, Cambridge University Press, New York, 2010
  • Journee and Massie, “Offshore Hydromechanics”, Delft University of Technology, 2001.
References
    Planned learning activities and teaching methods

    The taught part of course is delivered to the students by means oflectures, conducted with the help of computer presentations. Lecture notes andpresentations will be available through the web for students to use incombination with the textbooks.

    Lectures will be supplemented with homeworkassignments to develop knowledge and computational skills on the variousmodulus of the course (hydrostatic stability, regular and irregular waves andmodelling of random seas, computation of wave loads on slender and large volumemarine structures.
    Assessment methods and criteria
    Assignments15%
    Tests15%
    Readings10%
    Final Exam60%
    Language of instructionEnglish
    Work placement(s)NO