Developing Flow of Power-Law Fluids in Circular Tube Having Superhydrophobic Transverse Grooves

Authors

  • Ming Wei Lee School of Aerospace Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Penang, Malaysia
  • Kok Hwa Yu School of Mechanical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Penang, Malaysia
  • Yew Heng Teoh School of Mechanical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Penang, Malaysia
  • Han Wei Lee School of Mechanical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Penang, Malaysia
  • Mohd Azmi Ismail School of Mechanical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Penang, Malaysia

Keywords:

superhydrophobic, entrance length, water-repellent, surface roughness, laminar flow, non-Newtonian fluid

Abstract

This study presents a numerical investigation on developing flow of inelastic nonNewtonian fluids in a circular tube having alternating superhydrophobic grooves and ribs arranged transversely to the flow direction. Laminar, steady and incompressible flow of non-Newtonian power-law fluid flowing in a circular tube having superhydrophobic transverse grooves of L = 0.1 and ? = 0.5 is considered. The influences arising from the presence of superhydrophobic surfaces (SHS) on radial velocity profile development, centerline velocity distribution and hydrodynamic entrance length are examined. For Reynolds numbers ranging from ???????? = 1 × 10?4 to ???????? = 1, numerical results show that the hydrodynamic entrance lengths arising from flow over superhydrophobic transverse grooves for non-Newtonian fluid with powerlaw index in the range 0.5 ? ???? < 1.5 are consistently longer than that of smooth surface.

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Published

2020-12-14

How to Cite

Wei Lee, M. ., Hwa Yu, . K. ., Heng Teoh, Y. ., Wei Lee, H. ., & Ismail, M. A. . (2020). Developing Flow of Power-Law Fluids in Circular Tube Having Superhydrophobic Transverse Grooves. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 56(1), 1–9. Retrieved from https://www.akademiabaru.com/submit/index.php/arfmts/article/view/2480

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