Analysis of Submerged 2D Hydrofoils with Finite Depth

Document Type : Original Article

Authors

1 Mechanical engineering, Ferdowsi university of Mashhad

2 Msc. student of Mechanical engineering Ferdowsi university of Mashhad, Iran

Abstract

Investigation of the hydrodynamic parameters of the moving objects under the free surface in order to study the effects of velocity, curvature, thickness and angle of attack of hydrofoils has been initiated since many years. The computational fluid dynamics software, FLUENT, provides the solution of the governing equations with VOF method for two phases flows. The RSM turbulence model is used in this article which is more accurate generally. In the present study, the effects of free surface and finite depth on the hydrofoils characteristics are investigated simultaneously and compared with those derived from the BEM method and validated with the existing and experimental values. The results show that for the hydrofoils in the more depth, the lift and drag coefficients and lift to drag fraction increases. Furthermore, in shallow water flows, the hydrofoils with higher camber and lower angle of attack have better performance and the downstream waves damp earlier.

Keywords

References

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History

  • Receive Date: 05 April 2019
  • Revise Date: 01 March 2020
  • Accept Date: 23 June 2020
  • Publish Date: 20 February 2020

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