내부조파기법을 활용한 Navier-Stokes 방정식 모형의 고립파 처오름 수치모의
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 하태민 | - |
dc.contributor.author | 김형준 | - |
dc.contributor.author | 조용식 | - |
dc.date.accessioned | 2024-01-10T02:06:01Z | - |
dc.date.available | 2024-01-10T02:06:01Z | - |
dc.date.issued | 2010-09 | - |
dc.identifier.issn | 1226-6280 | - |
dc.identifier.issn | 2287-6138 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/193871 | - |
dc.description.abstract | 급경사에서의 고립파의 처오름을 예측하기 위해 3차원 수치모형에 내부조파기법을 도입하여 수치모형실험을 수행하였다. 수치모형은 Navier-Stokes 방정식을 유한차분법을 이용하여 계산하는 동수압 모형으로서, 난류의 해석을 위해서 상대적으로 큰 에디(eddy)만을 고려하는 SANS(spatially averaged Navier-Stokes) 방정식을 푸는 LES(large-eddy-simulation) 기반의 수치모형을 사용한다. 엇갈림 격자체계에서 유한차분법을 사용하여 지배방정식을 해석하는 모형으로서 수치기법으로 Two-step projection 기법을 사용하여 SANS 방정식을 풀었으며, Poisson 방정식을 Bi-CGSTAB 기법을 이용하여 풀고 압력장을 계산하였다. 또한, 자유수면의 추적을 위하여 2차 정확도의 VOF(volume-of-fluid) 기법을 사용하였다. 먼저 고립파를 3차원 공간의 일정 수심상에서 내부조파하여 해석해와 비교한 후 분산오차에 대해 분석하였다. 그리고 고립파를 내부조파하여 급경사에서의 고립파의 처오름 및 처내림 현상을 예측하고 수리모형 실험결과와 비교 및 분석하였다. | - |
dc.description.abstract | A three-dimensional numerical model called NEWTANK is employed to investigate solitary wave run-up with an internal wave-maker on a steep slope. The numerical model solves the spatially averaged Navier- Stokes equations for two-phase flows. The LES(large-eddy-simulation) approach is adopted to model the turbulence effect by using the Smagorinsky SGS(sub-grid scale) closure model. A two-step projection method is adopted in numerical solutions, aided by the Bi-CGSTAB(Bi-Conjugate Gradient Stabilized) method to solve the pressure Poisson equation for the filtered pressure field. The second-order accurate VOF(volume-of-fluid) method is used to track the distorted and broken free surface. A solitary wave is first internally generated and propagated over a constant water depth in the three-dimensional domain. Numerically predicted results are compared with analytical solutions and numerical errors are analyzed in detail. The model is then applied to study solitary wave run-up on a steep slope and the obtained results are compared with available laboratory measurements. | - |
dc.format.extent | 11 | - |
dc.language | 한국어 | - |
dc.language.iso | KOR | - |
dc.publisher | 한국수자원학회 | - |
dc.title | 내부조파기법을 활용한 Navier-Stokes 방정식 모형의 고립파 처오름 수치모의 | - |
dc.title.alternative | Numerical Simulation of Solitary Wave Run-up with an Internal Wave-Maker of Navier-Stokes Equations Model | - |
dc.type | Article | - |
dc.publisher.location | 대한민국 | - |
dc.identifier.doi | 10.3741/JKWRA.2010.43.9.801 | - |
dc.identifier.bibliographicCitation | 한국수자원학회 논문집, v.43, no.9, pp 801 - 811 | - |
dc.citation.title | 한국수자원학회 논문집 | - |
dc.citation.volume | 43 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | 801 | - |
dc.citation.endPage | 811 | - |
dc.identifier.kciid | ART001482064 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | kci | - |
dc.subject.keywordAuthor | internal wave-maker | - |
dc.subject.keywordAuthor | navier-stokes equations | - |
dc.subject.keywordAuthor | NEWTANK | - |
dc.subject.keywordAuthor | solitary wave | - |
dc.subject.keywordAuthor | run-up | - |
dc.subject.keywordAuthor | internal wave-maker | - |
dc.subject.keywordAuthor | navier-stokes equations | - |
dc.subject.keywordAuthor | NEWTANK | - |
dc.subject.keywordAuthor | solitary wave | - |
dc.subject.keywordAuthor | run-up | - |
dc.subject.keywordAuthor | 내부조파 | - |
dc.subject.keywordAuthor | Navier-Stokes 방정식 | - |
dc.subject.keywordAuthor | NEWTANK | - |
dc.subject.keywordAuthor | 고립파 | - |
dc.subject.keywordAuthor | 처오름 | - |
dc.identifier.url | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=01866548&target=NART&cn=JAKO201028552428566 | - |
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