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대한토목학회논문집 = Journal of the Korean Society of Civil Engineers, v.34 no.3, 2014년, pp.859 - 871
이우동 (국립경상대학교 해양산업연구소) , 허동수 (국립경상대학교 해양토목공학과)
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In order to analyze the density current due to salt and temperature difference, this study develops new numerical model (LES-WASS-3D ver. 2.0) by introducing state equation for salt and temperature and 3D advection-diffusion equation to existing 3D numerical wave tank (LES-WASS-3D ver. 1.0). To veri...
| 핵심어 | 질문 | 논문에서 추출한 답변 |
|---|---|---|
| 밀도류가 무엇인가? | 유체의 밀도가 불균일한 분포를 이루고 있을 때, 수평적인 압력경도로 인하여 흐름이 발생하는 데 이것을 밀도류라 한다. 이에 유체를 다루는 많은 분야(해양, 해안, 하천, 기상, 기계 등)에서 관심을 가지고 많은 연구들이 진행되고 있다. | |
| 밀도류를 해석하기 위해서 중요한 것은? | 밀도류를 해석하기 위해서는 유체의 정확한 밀도산정이 매우 중요하며, 본 연구에서는 Gill (1982)이 제안한 수온과 염분에 따른 물의 밀도산정식 Eq. (4)를 도입한다. 여기서 ρ0는 4°C 물의 밀도이다. | |
| 유체의 밀도(ρ)와 동점성계수(v) 산정을 위한 상태방정식은 어떤 변수를 갖는 함수인가? | 밀도류의 해석을 위하여 지배방정식에 대입되는 유체의 밀도(ρ)와 동점성계수(v)를 정확히 산정하기 위해서는 영향을 미치는 요소의 정량적인 산정이 매우 중요하다. 물의 밀도와 동점성계수의 산정을 위한 상태방정식은 온도(T)와 염분(S)의 함수이다. 따라서 본 연구에서는 온도와 염분에 관한 3차원 이류-확산 방정식 Eqs. |
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