Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
권호 표지
DOI QR코드

DOI QR Code

Study on Flow Interaction between Bubble and Phase Change Material according to Injection Location

주입 위치에 따른 기포와 상변화물질의 유동 상호 작용에 관한 연구

  • Min Hyeok Kim (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Yun Young Ji (Department of Smart Fab. Technology, Sungkyunkwan University) ;
  • Dong Kee Sohn (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Han Seo Ko (School of Mechanical Engineering and Department of Smart Fab. Technology, Sungkyunkwan University)
  • Received : 2023.10.17
  • Accepted : 2023.11.24
  • Published : 2023.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, we conducted analysis of bubble dynamics and flow of liquid phase change material(PCM) using shadowgraphy and particle image velocimetry(PIV). Characteristics of internal flow varied depending on locations of injection when solid PCM was liquefied from heated vertical wall. When bubbles rose immediately, they exhibited elliptical shape and zigzag trajectory. In contrast, when bubbles rose after merging at the bottom of solid PCM, with equivalent diameter for the inter-wall distance of 0.64 or greater, they showed a jellyfish shape and strong rocking behavior. It was observed by the PIV that the small ellipse bubbles made most strong flow inside the liquid PCM. Furthermore, the flow velocity was highest in the case of front injection, as the directions of temperature gradients and bubble-driven flow were aligned. The results underscore the significant influence of injection location on various characteristics, including bubble size, shape, rising path of bubbles, and internal flow.

Keywords

Acknowledgement

본 연구는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(NRF-2021R1A2C1006166)(NRF-2019R1A2C2003176).

References

  1. Zenit, R. and Magnaudet, J., 2008, "Path instability of rising spheroidal air bubbles: a shape-controlled process," Physics of Fluids, Vol. 20(6), pp.061702
  2. Saffman, P. G., 1956, "On the rise of small air bubbles in water," Journal of Fluid Mechanics, Vol. 1(3), pp.249~275 https://doi.org/10.1017/S0022112056000159
  3. Ellingsen, K. and Risso, F., 2001, "On the rise of an ellipsoidal bubble in water: oscillatory paths and liquid-induced velocity," Journal of Fluid Mechanics, Vol. 440, pp.235~268. https://doi.org/10.1017/S0022112001004761
  4. Kim, S., Chung, J. H., Lee, J. W., Sohn, D. K., and Ko, H. S., 2019, "Study on optimum structure of air-lift bio-reactor using numerical analysis of two-phase flow," Journal of the Korean Society of Visualization, Vol. 17(3), pp.24~31. https://doi.org/10.5407/JKSV.2019.17.3.024
  5. Maeng, H. and Park, H., 2021, "An experimental study on the heat transfer by a single bubble wake rising near a vertical heated wall," International Journal of Heat and Mass Transfer, Vol. 165, pp.120590.
  6. Moon, E., and Kim, D., 2022, "Interaction between a rising toroidal bubble and a free surface," Journal of the Korean Society of Visualization, Vol. 20(2), pp.55~62. https://doi.org/10.5407/JKSV.2022.20.2.055
  7. Huang, S. F., 2023, "Mechanism study of bubble dynamics under the buoyancy effects," Nuclear Analysis, Vol. 2(1), pp.100060.
  8. Liu, L., Hongjie, Y. and Guojian, Z., 2015, "Experimental studies on the shape and motion of air bubbles in viscous liquids," Experimental Thermal and Fluid Science, Vol. 62, pp.109~121. https://doi.org/10.1016/j.expthermflusci.2014.11.018
  9. Baled, H. O., Xing, D., Katz, H., Tapriyal, D., Gamwo, I. K., Soong, Y., Bamgbade, B. A., Wu, Y., Liu, K. McHugh, M. A. and Enick, R. M., 2014, "Viscosity of n-hexadecane, n-octadecane and n-eicosane at pressures up to 243 MPa and temperatures up to 534 K," The Journal of Chemical Thermodynamics, Vol. 72, pp.108~116. https://doi.org/10.1016/j.jct.2014.01.008
  10. Choi, S. H., Sohn, D. K. and Ko, H. S., 2021, "Performance enhancement of latent heat thermal energy storage by bubble-driven flow," Applied Energy, Vol. 302, pp.117520.
  11. De Vries, A.W.G., Biesheuvel, A. and Van Wijngaarden, L., 2002, "Notes on the path and wake of a gas bubble rising in pure water," International journal of multiphase flow, Vol. 28(11), pp.1823~1835. https://doi.org/10.1016/S0301-9322(02)00036-8
  12. Celata, G. P., Cumo, M., D'Annibale, F. and Tomiyama, A. 2004, "The wake effect on bubble rising velocity in one-component systems," International journal of multiphase flow Vol. 30(7~8), pp.939~961. https://doi.org/10.1016/j.ijmultiphaseflow.2004.04.007
  13. Yan, H. J., Zhang, H. Y., Zhang, H. M., Liao, Y. X. and Liu, L. 2023. "Three-dimensional dynamics of a single bubble rising near a vertical wall: Paths and wakes," Petroleum Science. Vol. 20, pp.1874~1884. https://doi.org/10.1016/j.petsci.2023.02.014
  14. Phan, C. M., 2021, "The surface tension and interfacial composition of water/ethanol mixture," Journal of Molecular Liquids, Vol. 342, pp.117505.
  15. Chang, S. S., Maurey, J. R. and Pummer, W. J., 1983, "Solubilities of two n-alkanes in various solvents," Journal of Chemical and Engineering Data, Vol. 28(2), pp.187~189. https://doi.org/10.1021/je00032a017