Free-surface Wave Interaction with a Horizontal Cylinder

M.S. thesis by Peter Oshkai. Department of Mechanical Engineering and Mechanics. Lehigh University.
  • Acknowledgements
  • List of figures
  • Abstract
  • 1. Introduction

    1.1 Circular cylinder in oscillatory flow

    1.2 Circular cylinder in orbital flow/orbital motion

    1.3 Circular cylinder beneath a nominally-stationary free-surface

    1.4 Unresolved issues

  • 2. Experimental system and techniques

    2.1 Wave tank

    2.2 Experimental apparatus

    2.3 Strain gauge assembly

    2.4 Laser scanning and image acquisition techniques

    2.5 Image processing and interrogation

  • 3. Wave interaction with a well-submerged cylinder: patterns of vorticity and velocity-streamline topology
  • 4. Relation of instantaneous loading of cylinder to patterns of vorticity
  • 5. Identification of force contributions due to individual vortices
  • 6. Effects of degree of submergence of cylinder

    6.1 Initial stage of development of patterns of vorticity

    6.2 Inermediate stage of development of patterns of vorticity

    6.3 Final stage of development of patterns of vorticity

  • 7. Concluding remarks
  • References
  • Appendix A: Definition of Keulegan-Carpenter number and related issues
  • Appendix D: Oscillations of the cylinder in an incident wave: effects of phase shift
  • Appendix E: Additional images
    poshkai@me.uvic.ca