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Mathematical Modeling of Partial-Porous Circular Cylinders with Water Waves

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  • Min-Su Park
  • Weoncheol Koo

Abstract

The interaction of water waves with partially porous-surfaced circular cylinders was investigated. A three-dimensional numerical modeling was developed based on the complete mathematical formulation of the eigenfunction expansion method in the potential flow. Darcy’s law was applied to describe the porous boundary. The partial-porous cylinder is composed of a porous-surfaced body near the free surface, and an impermeable-surfaced body with an end-capped rigid bottom below the porous region. The optimal ratio of the porous portion to the impermeable portion can be adopted to design an effective ocean structure with minimal hydrodynamic impact. To scrutinize the hydrodynamic interactions in partial-porous circular cylinders, the computational fluid domain is divided into three regions: an exterior region, inner porous body regions, and regions beneath the body. Wave excitation forces and wave run-up on multibodied partial-porous cylinders are calculated and compared for various porous-portion ratios and wave conditions, all of which significantly influence the hydrodynamic property.

Suggested Citation

  • Min-Su Park & Weoncheol Koo, 2015. "Mathematical Modeling of Partial-Porous Circular Cylinders with Water Waves," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-19, January.
    • Handle: RePEc:hin:jnlmpe:903748
    DOI: 10.1155/2015/903748
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