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Effects of boundary layer control method on hydrodynamic characteristics and tip vortex creation of a hydrofoil

Ghadimi, P ; Sharif University of Technology | 2017

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  1. Type of Document: Article
  2. DOI: 10.1515/pomr-2017-0047
  3. Publisher: De Gruyter Open Ltd , 2017
  4. Abstract:
  5. There is currently a significant focus on using boundary layer control (BLC) approach for controlling the flow around bodies, especially the foil sections. In marine engineering this is done with the hope of increasing the lift - to - drag ratio and efficiency of the hydrofoils. In this paper, effects of the method on hydrodynamic characteristics and tip vortex formation of a hydrofoil are studied. Steady water injection at the tip of the hydrofoil is simulated in different conditions by using ANSYS-CFX commercial software. Validity of the proposed simulations is verified by comparing the obtained results against available experimental data. Effects of the injection on the lift, drag, and lift - to - drag ratio are studied and the ranges within which the injection has the most positive or negative effects, are determined. Furthermore, flow pattern and pressure variation are studied upon the water injection to determine the most positive and negative case and to ascertain the main reasons triggering these phenomena
  6. Keywords:
  7. Boundary layer control ; Hydrofoil ; NACA 0015 ; Steady water injection ; Tip vortex ; Aerodynamics ; Boundary layers ; Drag ; Flow patterns ; Fluid dynamics ; Hydrodynamics ; Hydrofoils ; Lift drag ratio ; Marine engineering ; Oil well flooding ; Vortex flow ; Wind tunnels ; Boundary-layer control ; Commercial software ; Foil section ; Hydrodynamic characteristics ; Lift to drag ratio ; NACA 0015 ; Pressure variations ; Tip vortex ; Water injection
  8. Source: Polish Maritime Research ; Volume 24, Issue 2 , 2017 , Pages 27-39 ; 12332585 (ISSN)
  9. URL: https://content.sciendo.com/view/journals/pomr/24/2/article-p27.xml