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NTIS 바로가기Journal of Korea Water Resources Association = 한국수자원학회논문집, v.47 no.8, 2014년, pp.703 - 715
This study aims to investigating the effect of Schmidt number (
핵심어 | 질문 | 논문에서 추출한 답변 |
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부유사의 이동은 어떤 과정을 통해 발생하는가? | 부유사의 이동은 이송과 확산 과정을 통해 지속적으로 발생하며 이송-확산 방정식으로 모형화된다. 이송-확산 방정식은 난류가 충분히 발달된 흐름에서 평균 흐름 방향으로의 이송을 의미하는 항과 무작위한 난류 및 분자운동에 의한 확산을 의미하는 항으로 구성된다. | |
플럭의 구조를 프랙탈 기하학을 통해 이해하는 목적은? | 본 연구에서는 점착성 유사의 응집과정을 모형화하기 위해 플럭의 구조를 프랙탈 기하학을 통해 이해한다. Khelifa and Hill (2006)은 플럭 내부를 일차입자가 얼마나 조밀하게 채우고 있는가를 의미하는 프랙탈 차원을 지수법칙으로 표현하였다. | |
점착성 유사와 비점착성 유사에 공통적으로 구성한 계산영역은? | 본 연구에서는 점착성 유사와 비점착성 유사를 대상으로 하며 흐름 조건을 주기를 가지는 진동 흐름(Oscillatory Flow)과 유속의 크기와 방향이 일정한 흐름(흐름, Current)으로 구분하여 수치 실험을 수행하였다. 두 경우 모두 하나의 크기가 4 mm인 격자를 적용하여 총 2.0 m 높이의 계산영역을 구성하였다. 비점착성 유사의 입자 크기는 매우 가는 모래에 해당되는 100 μm로 가정하였으며 일차입자의 크기는 4 μm를 적용하였다. |
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