0
RESEARCH PAPERS

A Parallelized Coupled Navier-Stokes/Vortex-Panel Solver

[+] Author and Article Information
Sven Schmitz

Department of Mechanical and Aeronautical Engineering,  University of California Davis, One Shields Ave, Davis, CA 95616-5294shschmitz@ucdavis.edu

Jean-Jacques Chattot

Department of Mechanical and Aeronautical Engineering,  University of California Davis, One Shields Ave, Davis, CA 95616-5294jjchattot@ucdavis.edu

J. Sol. Energy Eng 127(4), 475-487 (Jun 02, 2005) (13 pages) doi:10.1115/1.2035707 History: Received January 28, 2005; Revised May 30, 2005; Accepted June 02, 2005

A Navier-Stokes solver, CFX V5.6, is coupled with an in-house developed Vortex-Panel method for the numerical analysis of wind turbines. The Navier-Stokes zone is confined to the near-field around one wind turbine blade, the Vortex-Panel method models the entire vortex sheet of a two-bladed rotor and accounts for the far-field. This coupling methodology reduces both numerical diffusion and computational cost. The parallelized coupled solver (PCS) is applied to the NREL Phase VI rotor configuration under no-yaw conditions. Fully turbulent flow is assumed using thek-ϵandk-ωturbulence models. Results obtained are very encouraging for fully attached flow. For separated and partially stalled flow, results are in good agreement with experimental data. Discrepancies observed between the turbulence models are attributed to different prediction of the onset of separation. This is revealed by two-dimensional (2D) results of the S809 airfoil.

Copyright © 2005 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

NREL Phase VI Rotor (NREL)

Grahic Jump Location
Figure 2

Methodology of coupled solver

Grahic Jump Location
Figure 3

(a) NS zone; (b) Grid detail at blade tip

Grahic Jump Location
Figure 4

(a) Bound vortex; (b) Helicoidal vortex filament

Grahic Jump Location
Figure 5

2D grid spacing (60 points)

Grahic Jump Location
Figure 22

Isosurface of vorticity (VWind=11m∕s)

Grahic Jump Location
Figure 21

Spanwise lift coefficient (VWind=11m∕s)

Grahic Jump Location
Figure 20

Spanwise lift coefficient (VWind=7m∕s)

Grahic Jump Location
Figure 19

Spanwise circulation distribution

Grahic Jump Location
Figure 18

Spanwise pressure coefficient (VWind=10m∕s)

Grahic Jump Location
Figure 17

Spanwise pressure coefficient (VWind=9m∕s)

Grahic Jump Location
Figure 16

Spanwise pressure coefficient (VWind=7m∕s)

Grahic Jump Location
Figure 15

Tangential force coefficients (NREL phase VI, no yaw)

Grahic Jump Location
Figure 14

Normal force coefficients (NREL phase VI, no yaw)

Grahic Jump Location
Figure 13

Nondimensional wall distance y+(VWind=7m∕s)

Grahic Jump Location
Figure 12

Isosurface of vorticity (VWind=7m∕s)

Grahic Jump Location
Figure 11

Streamlines in front of blade (VWind=7m∕s)TIP=left, ROOT=right

Grahic Jump Location
Figure 10

Torque vs wind speed (NREL phase VI, no yaw)

Grahic Jump Location
Figure 9

U-contours for S809 airfoil

Grahic Jump Location
Figure 8

Drag coefficient for S809 airfoil

Grahic Jump Location
Figure 7

Lift coefficient for S809 airfoil

Grahic Jump Location
Figure 6

S809 profile polar (grid convergence)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In