طراحی تیغه توربین بادی در آباکوس با استفاده از پایتون 

def transformCoords(airfoilFile, twist=0.0, chord=1.0, PA_Loc=0.25, **kwargs):
    """ Returns the twisted Coordinates

    Parameters
    ----------
    airfoilFile, str: file name which contains the coordinates of airfoil used,
    twist, float: twist in degrees, default=0
    chord, float: chord in metres, default=1 (unit chord)
    rad_Loc, float: radial Location of the airfoil in blade, default=0
    PA_Loc, float: Pitch axis location in percent of chord, default=0.25,
                   Quarter-Chord location. (0 to 1)

    Returns
    ----------
    nd array: Coordinates rotated about pitch axis location 
    """
    rotationMatrix = lambda theta: np.array([ [np.cos(theta),   np.sin(theta)],
                                              [-np.sin(theta),  np.cos(theta)] ])
    twist = np.deg2rad(twist)
    coords = np.loadtxt(airfoilFile, dtype=float, **kwargs)
    PA_Loc *= chord           # % P.A*chord
    coords[:, 0] -= PA_Loc    # Translate the x/c coordinates to the pitch axis
    twistedCoords = np.zeros((coords.shape[0] + 1, 2))    
    
    coords_dash = np.dot(rotationMatrix(twist), coords.T).T
    x_dash, y_dash = coords_dash[:, 0], coords_dash[:, 1]
    twistedCoords[:-1, 0], twistedCoords[:-1, 1] = x_dash, y_dash
    
    #Join the first and last nodes to form a closed profile, very important for Abaqus
    twistedCoords[-1, 0], twistedCoords[-1, 1] = x_dash[0], y_dash[0]      
    twistedCoords *= chord   # Scale x/c and y/c to the chord
    return twistedCoords

fig, ax = plt.subplots()
for angle in range(-20, 30, 10):
    twistedCoords_1 = transformCoords("S822.txt", twist=angle, chord=1.0, PA_Loc=0.25, skiprows=2)
    ax.plot(twistedCoords_1[:, 0], twistedCoords_1[:, 1], label="%2d" % angle);
ax.legend(loc=2)