Abstract

The methods to determine the hydrodynamic coefficients for the fixed type artificial reefs which were constructed to control ecological system in coastal waters are compared and discussed by model test results. To calculate the wave forces, least square method show good agreement with the experimental results and more stability than maximum force component method or Fourier decomposition method. This modified least square method of weighting the square of measured force turned out to be the most feasible method for maximum force. Using the feasible method, hydrodynamic characteristics for artificial reefs on uniform slopes offshore and breaking zone were studied. They were properly related to Keulegan-Carpenter's number and found larger than previous results. Wave force coefficients for artificial reefs around breaking zone were distributed from 1.5 to 2.5, and the mean value was 2.0. Drag force components were more in evidence than inertia force in maximum force which is important parameter to evaluate stability for high-permeability structures. A formula for the calculation of the maximum force for artificial reefs design is proposed, using structural dimension, water particle velocity and Keulegan-Carpenter's number.

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4. Jeong, Chil-Hoon ; Kim, Heon-Tae 2007. "Numerical Analysis of the Flow Field around Artificial Reefs" 한국수산학회지 = Journal of the Korean Fisheries Society, 40(1): 31~38  원문보기 상세보기
5. Sohn, Byung-Kyu 2008. "The Hydraulic Characteristics of Artificial Reefs Used to Construct Seaweed Beds" 한국수산학회지 = Journal of the Korean Fisheries Society, 41(3): 215~220  원문보기 상세보기
6. Sohn, Byung-Kyu ; Yi, Byung-Ho ; Yoon, Han-Sam 2011. "Hydraulic Characteristics of Train Carriage Artificial Reef in Wave and Current Field Conditions" 한국마린엔지니어링학회지 = Journal of the Korean Society of Marine Engineering, 35(1): 108~117  원문보기 상세보기
7. Baek, Seung Hwa ; Shin, Bum-Shick ; Kim, Kyu-Han 2014. "Hydraulic model test for corrugated artificial reef stability" 한국산학기술학회논문지 = Journal of the Korea Academia-Industrial cooperation Society, 15(8): 5327~5332  원문보기 상세보기