Numerical Simulation of Water-Exchange due to Overtopped Breakwaters

월파허용방파제에 의한 해수교환 수치모의

  • Kim, In-Ho (Department of Constructional Disaster Prevention Engineering, Kangwon National Univ.) ;
  • Lee, Jung-Lyul (School of Civil and Environmental Engineering, Sungkyunkwan Univ.)
  • 김인호 (강원대학교 공학대학 건설방재공학과) ;
  • 이정렬 (성균관대학교 공과대학 사회환경시스템공학과)
  • Received : 2010.05.06
  • Accepted : 2010.06.18
  • Published : 2010.06.30

Abstract

This study presents a numerical simulation of sea water-exchange as a preliminary accessing tool of water quality in the protected shore behind a overtopped breakwater. The overtopped breakwater is taken into account for a safe swimming and beach protection. The overtopping rate is calculated by empirical models and the consequent currents, known as wave-induced currents, are calculated under the conditions of H.W.O.S.T and L.W.O.S.T. The rate of sea water exchange is used to evaluate the characteristics of sea water exchange and calculated through the simulation processes such as advective discharging through the outlets and random-walking diffusion of particles released within a basin. The numerical results show that the overtopped waves sufficiently improve the water exchange without healthless stagnation of contaminated mass and the consequent currents are not too strong for swimming.

Keywords

Wave overtopping;Water-exchange;Overtopped breakwater;Random-walking method;Wave-induced current;H.W.O.S.T;L.W.O.S.T

Acknowledgement

Supported by : 강원대학교

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