Journal of Mechanical Science and Technology

, Volume 30, Issue 11, pp 5019–5028 | Cite as

Numerical investigations of solidification around a circular cylinder under forced convection

  • Truong V. Vu
  • Anh V. Truong
  • Ngoc T. B. Hoang
  • Duong K. Tran
Article

Abstract

We present numerical investigations of solidification around a cooled circular cylinder in the presence of forced convection. The numerical method is based on the front-tracking/finite difference and interpolation techniques. The solidification interface is represented by connected elements that move on a fixed, rectangular grid. The no-slip and Dirichlet temperature boundary conditions are imposed by the linear interpolation. The interpolation method was first validated through comparisons of the present results with some other numerical results for flow in an annulus, flow in an enclose with a conduction solid body and flow over a heated cylinder. We then used the method to investigate the solidification process around a cold cylinder by varying various parameters such as the Reynolds number Re, the Prandtl number Pr, the Stefan number, the thermal conductivity ratio ksl, the non-dimensional temperature of the introduced liquid θ0, and the solid-to-liquid density ratio ρsl. Numerical results indicate that an increase in any of Re, Pr and θ0 results in a decrease in the area of the solidification region around the cylinder. In contrast, increasing ksl increases the region of the solid phase. Investigation on St and ρsl reveals that the solidification rate increases with an increase in St or a decrease in ρsl. However, St and ρsl have a minor effect on the final product of the solidification process.

Keywords

Circular cylinder Forced convection Front-tracking Linear interpolation Solidification 

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Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Truong V. Vu
    • 1
  • Anh V. Truong
    • 1
  • Ngoc T. B. Hoang
    • 1
  • Duong K. Tran
    • 1
  1. 1.School of Transportation EngineeringHanoi University of Science and TechnologyHanoiVietnam

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