Journal of Marine Science and Technology

Journal of Marine Science and Technology

Effect of power-law fluid behavior Index on Hydrofoil Lift and drag coefficient in Laminar Flow

Document Type : Original Manuscript

Author
Hesamoddin Ravanbakhsh
Naval Architecture and Marine Engineering, Faculty of Marine Engineering, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran.
10.22113/jmst.2018.126343.2143
Abstract
Calculating the forces acting from the fluid to different structures is a field of interest to many researchers. Lift and drag forces are the most important parameters in the hydrofoil issues. Given that the Newtonian Fluid assumption is common in most studies in this field; in this paper, the forces imposed on a hydrofoil in a laminar non-Newtonian fluid flow have been investigated. The model is Power law for non-Newtonian fluid, and is simulated for three dilatants, Newtonian and pseudo plastic fluid at angles of attack of zero, 5, 10, 15, 20 and 25 degrees, and behavior indexes of 0.5, 1 and 1.5 is considered. Creating Mesh, Processing, and Post-Processing Computing This research is done by three free and open source softwares, G-Mesh, Open FOAM, and Para view. For validation, the lift and drag coefficients in the behavior index 1, that's mean Newtonian fluid, are consistent with similar results. As the angle increases, the dilatant fluid separation phenomenon occurs earlier; also Lowering lift coefficient for this concentrated fluid occurs at a larger angle of attack.
 
Keywords
Hydrofoil
Power law fluid
Lift
Drag
Laminar Flow

Subjects

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Journal of Marine Science and Technology
Volume 21, Issue 3
Summer 2023
Pages 54-61

  • Receive Date 06 April 2018
  • Revise Date 07 May 2018
  • Accept Date 09 May 2018
  • Publish Date 23 September 2022