def plate_l(self):
"""The length of the plates in the plate settlers."""
plate_l = (self.q /
(self.plate_n * self.floc_chan_w * self.plate_capture_vel *
np.cos(self.plate_angle.to(u.rad)))) - (
self.plate_s * np.tan(self.plate_angle.to(u.rad)))
plate_l_rounded = ut.ceil_step(plate_l.to(u.cm), 1.0 * u.cm)
return plate_l_rounded
def chan_n(self):
"""The minimum number of channels based on the maximum
possible channel width and the maximum length of the channels.
"""
if self.q < 16 * u.L / u.s:
return 1
else:
chan_n = (((self.vol /
(self.polycarb_sheet_w * self.end_water_depth)) +
self.ent_l) / self.chan_l).to_base_units()
if self.chan_n_parity is 'even':
return ut.ceil_step(chan_n, step=2)
elif self.chan_n_parity is 'odd':
return ut.ceil_step(chan_n, step=2) - 1
elif self.chan_n_parity is 'any':
return ut.ceil_step(chan_n, step=1)
def chan_w(self):
"""The channel width."""
chan_w = ut.ceil_step(ut.max(self.chan_w_min_gt, self.chan_w_min),
step=1 * u.cm)
return chan_w