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Boussinesq 방정식을 이용한 규칙파의 연파해석

Title
Boussinesq 방정식을 이용한 규칙파의 연파해석
Other Titles
Stem Wave Analysis of Regular Waves using a Boussinesq Equation
Author
윤성범
Keywords
연파; 규칙파; 2층 Boussinesq방정식; 고차 조화성분; 비선형성; stem waves; regular waves; two-layer Boussinesq equations #higher harmonics #nonlinearity of waves
Issue Date
2007-10
Publisher
한국해안해양공학회
Citation
한국해안해양공학회지, v. 19, No. 5, Page. 446 - 456
Abstract
본 연구에서는 Lynett and Liu(2004a, b)에 의해 유도된 2층 Boussineaq방정식을 이용하여 일정수심상의 규칙파 조건에서 직립벽을 따른 연파를 해석하고, 수리모형실험결과 및 포물형근사식에 의한 해석결과와 비교하였다. 두 가지 수치모형에 의한 해석결과는 수리실험결과와 비교적 잘 일치하였으나, 입사각이 증가할수록 Boussinesq 모형이 포물형모형보다 우수한 결과를 주는 것으로 나타났다. 특히 파랑의 비선형성에 의한 고차 조화성분의 발생은 Boussinesq모형에서만 관찰되었다. Numerical analyses of stem waves, the interaction between incident and reflected waves of obliquely incident regular waves along a vertical wall in a constant water depth, are presented. For the numerical model of the analysis, the two-layer Boussinesq equations developed by Lynett and Liu(2004a,b) are employed. Numerical results are compared with both laboratory measurements and those obtained using parabolic approximation model. The overall comparisons between the results from the two numerical models and the experiments are good. However, the two-layer Boussinesq model is more accurate than the parabolic approximation model as the angle of incident waves increases. In particular, the higher harmonic generation due to the wave nonlinearity is captured only in the Boussinesq model.
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE06219942&language=ko_KRhttps://repository.hanyang.ac.kr/handle/20.500.11754/106986
ISSN
1976-8192
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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