Three-dimensional model of waves passing submerged porous structures

Jaw-Fang Lee, P. I. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper a three-dimensional model of waves passing submerged porous structures is presented. The boundary element method is used to describe flows in the porous structure and waves passing above the structure. Linear wave theory is used to describe the wave fields, and the theory of waves in the porous structures proposed by Sollitt and Cross (1972) is used for the porous structures. The present effort is to combine a wave model and a porous wave model for three-dimensional problems. A simple grid generation program is also developed to facilitate the numerical computation. The numerical model is first verified by the results of waves passing submerged impermeable structures. Then the model is used to study three-dimensional effects of submerged porous structures on passing waves. Wave profiles along the centerline of the structure in the wave field are used to compare with two-dimensional results. The results show that the present model can duplicate the cases of waves passing submerged impermeable structures. For the cases of submerged porous structures, the results show that in comparison with the two-dimensional problem there exist diffraction effects due to the submerged structures. Since the structures are submerged the incident waves are transmitted over the structure while waves are partially reflected. Due to the submerged structures the transmitted waves generate focusing behind the center of the structures. Three-dimensional wave patterns are presented, and characteristics of transmitted waves are also investigated.

Original languageEnglish
Title of host publicationProceedings of the 1999 Ninth International Offshore and Polar Engineering Conference (Volume 3), Brest, France, 30 May - 4 June 1999
EditorsJ S Chung, M Olagnon, C H Kim, A Francescutto, J S Chung, M Olagnon, C H Kim, A Francescutto
PublisherInternational Society of Offshore and Polar Engineers
Pages363-367
Number of pages5
ISBN (Print)1880653427
Publication statusPublished - 1999
EventProceedings of the 1999 Ninth International Offshore and Polar Engineering Conference - Brest, France
Duration: 1999 May 301999 Jun 4

Other

OtherProceedings of the 1999 Ninth International Offshore and Polar Engineering Conference
CountryFrance
CityBrest
Period99-05-3099-06-04

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)
  • Engineering(all)
  • Environmental Science(all)

Fingerprint Dive into the research topics of 'Three-dimensional model of waves passing submerged porous structures'. Together they form a unique fingerprint.

  • Cite this

    Lee, J-F., & Chen, P. I. (1999). Three-dimensional model of waves passing submerged porous structures. In J. S. Chung, M. Olagnon, C. H. Kim, A. Francescutto, J. S. Chung, M. Olagnon, C. H. Kim, & A. Francescutto (Eds.), Proceedings of the 1999 Ninth International Offshore and Polar Engineering Conference (Volume 3), Brest, France, 30 May - 4 June 1999 (pp. 363-367). International Society of Offshore and Polar Engineers.