Effect of capillary tube's shape on capillary rising regime for viscos fluids

Soroush, F ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1088/1757-899X/350/1/012016
  3. Publisher: Institute of Physics Publishing , 2018
  4. Abstract:
  5. When properties of the displacing fluid are considered, the rising profile of the penetrating fluid in a capillary tube deviates from its classical Lucas-Washburn profile. Also, shape of capillary tube can affect the rising profile in different aspects. In this article, effect of capillary tube's shape on the vertical capillary motion in presence of gravity is investigated by considering the properties of the displacing fluid. According to the fact that the differential equation of the capillary rising for a non-simple wall type is very difficult to solve analytically, a finite element simulation model is used for this study. After validation of the simulation model with an experiment that has been done with a simple capillary tube, shape of the capillary tube's wall is changed in order to understand its effects on the capillary rising and different motion regimes that may appear according to different geometries. The main focus of this article is on the sinusoidal wall shapes and comparing them with a simple wall. © Published under licence by IOP Publishing Ltd
  6. Keywords:
  7. Differential equations ; Nanostructured materials ; Tubes (components) ; Different geometry ; Finite element simulation model ; Simulation model ; Vertical capillaries ; Wall types ; Capillary tubes
  8. Source: 2017 International Conference on Nanomaterials and Biomaterials, ICNB 2017, 11 December 2017 through 13 December 2017 ; Volume 350, Issue 1 , 2018 ; 17578981 (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/1757-899X/350/1/012016