DMSModel:
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Double Multiple Streamtube Model.
Predict upwind and downwind interference parameters.
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Form:
[u, upm] = DMSModel(af,bld,rot,wnd,DynStlModel,ControlAlgo,
nItLim,nAngStps)
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Inputs
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af (1,1) Airfoil data structure
.reCL (1,:) Reynolds number
.alphaCL (1,:) Angle of attack (deg)
.cL (:,:) Lift coefficient
.reCD (1,:) Drag Reynolds number
.alphaCD (1,:) Angle of attack (deg)
.cD (:,:) Drag coefficient
.reCM (1,:) Reynolds number
.alphaCM (1,:) Angle of attack (deg)
.cM (:,:) Moment coefficient
.alpha0 (1,1) Angle of atack for zero lift
bld (1,1) Blade data structure
.c (1,1) Chord (m)
.H (1,1) Blade half length (m)
.thknss (1,1) Blade thickness (m)
rot (1,1) Rotor data structure
.R (1,1) Rotor radius (m)
.N (1,1) Number of blades
.omega (1,1) Rotor speed (rad/s)
.zR (1,1) Ground clearance (m)
wnd (1,1) Wind data structure
.Vinf (1,1) Free stream wind speed (m/s)
.alphaw (1,1) Wind shear component
.rho (1,1) Air density (kg/m^3)
.nu (1,1) Kinematic viscosity (m^2/2)
DynStlMdl (1,1) String specifying Dynamic Stall Model
ControlAlgo (1,1) String specifying Control Algorithm
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Outputs
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u (1,1) Upwind interference parameter
upm (1,1) Downwind interference parameter
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References
[1] I. Paraschivoiu, "Double-Multiple Streamtube Model for Studying
Vertical Axis Wind Turbines", Journal of Propulsion, Vol. 4, No. 4,
pp 370-377
[2] Y. Staelens, F. Saeed, and I. Paraschivoiu, "A straight-bladed
variable-pitch VAWT concept for improved power generation", Proc. 41st
Aerospace Sciences Meeting and Exhibit, 2003, Reno, NV; AIAA-2003-0524
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