def __init__(self, U_max, t, unit, s, K, compute_width):
'''Unit and s characterize domain, t, K - time parameters,
U_max is the maximal magnitude of inflow velocity.'''
Expression.__init__(self)
self.U_max, self.t, self.K = U_max, t, K
# Channel width
self.w = compute_width(unit)
# Midpoint on the inflow
M = [4*unit*cos(5*pi/4) + s*sin(5*pi/4) - 0.5*self.w*cos(5*pi/4),
4*unit*sin(5*pi/4) - s*cos(5*pi/4) - 0.5*self.w*sin(5*pi/4)]
self.M = M
def __init__(self, U_max, t, unit, s, K, compute_width):
'''Unit and s characterize domain, t, K - time parameters,
U_max is the maximal magnitude of inflow velocity.'''
Expression.__init__(self)
self.U_max, self.t, self.K = U_max, t, K
# Channel width
self.w = compute_width(unit)
# Midpoint on the inflow
M = [
4 * unit * cos(5 * pi / 4) + s * sin(5 * pi / 4) -
0.5 * self.w * cos(5 * pi / 4), 4 * unit * sin(5 * pi / 4) -
s * cos(5 * pi / 4) - 0.5 * self.w * sin(5 * pi / 4)
]
self.M = M
def __init__(self, expr):
self.expr = expr
self.values = None
self.points = None
Expression.__init__(self)
