| 학회 | 한국화학공학회 |
| 학술대회 | 2022년 봄 (04/20 ~ 04/23, 제주국제컨벤션센터) |
| 권호 | 28권 1호, p.1023 |
| 발표분야 | [주제 12] 화학공학일반(부문위원회 발표) |
| 제목 | Capillary Rise of Yield Stress Fulids |
| 초록 | Cell & DNA solutions, blood, food, cosmetics, and polymer mixtures are examples of yield stress fluids (YSFs). They frequently wet narrow channels, as seen in a blood test for virus and a recovery of crude oil. In this talk, we present the capillary rise of various YSFs in vertical glass capillaries, and find a unique rise curve distinct from Newtonian fluids; the rise slows down to a plateau in the middle, followed by the sudden increase to the final equilibrium. We show that this plateau is originated from a competition between Laplace pressure and the yield stress. Furthermore, it is also found that the second rise from the plateau greatly depends on the relaxation of meniscus, i.e., wetting front. This work is supported by National Research Foundation of Korea (NRF-021R1A6A3A13046176). Keywords : Yield stress fluid, capillary action, porous media, oil recovery |
| 저자 | 김한을1, 최시영2 |
| 소속 | 1KAIST, 2한국과학기술원 |
| 키워드 | 이동현상(Transport Phenomena) |
| 원문파일 | 초록 보기 |
