# coding=utf-8
"""Volume Flow Rate data type."""
from __future__ import division
from .base import DataTypeBase
from .volume import Volume
from .volumeflowrateintensity import VolumeFlowRateIntensity
[docs]class VolumeFlowRate(DataTypeBase):
"""Volume Flow Rate
"""
_units = ('m3/s', 'ft3/s', 'L/s', 'cfm', 'gpm', 'mL/s', 'fl oz/s', 'L/h', 'gph')
_si_units = ('m3/s', 'L/s', 'mL/s', 'L/h')
_ip_units = ('ft3/s', 'cfm', 'gpm', 'fl oz/s', 'gph')
_min = 0
_abbreviation = 'dV/dt'
_normalized_type = VolumeFlowRateIntensity
def _m3_s_to_ft3_s(self, value):
return value * 35.3147
def _m3_s_to_L_s(self, value):
return value * 1000.
def _m3_s_to_cfm(self, value):
return value * 2118.88
def _m3_s_to_gpm(self, value):
return value * 15850.3231
def _m3_s_to_mL_s(self, value):
return value * 1000000.
def _m3_s_to_floz_s(self, value):
return value * 33814.
def _m3_s_to_L_h(self, value):
return value * 3600000.
def _m3_s_to_gph(self, value):
return value * 951019.
def _ft3_s_to_m3_s(self, value):
return value / 35.3147
def _L_s_to_m3_s(self, value):
return value / 1000.
def _cfm_to_m3_s(self, value):
return value / 2118.88
def _gpm_to_m3_s(self, value):
return value / 15850.3231
def _mL_s_to_m3_s(self, value):
return value / 1000000.
def _floz_s_to_m3_s(self, value):
return value / 33814.
def _L_h_to_m3_s(self, value):
return value / 3600000.
def _gph_to_m3_s(self, value):
return value / 951019.
[docs] def to_unit(self, values, unit, from_unit):
"""Return values converted to the unit given the input from_unit."""
return self._to_unit_base('m3/s', values, unit, from_unit)
[docs] def to_ip(self, values, from_unit):
"""Return values in IP and the units to which the values have been converted."""
if from_unit in self.ip_units:
return values, from_unit
elif from_unit == 'L/s':
return self.to_unit(values, 'cfm', from_unit), 'cfm'
elif from_unit == 'mL/s':
return self.to_unit(values, 'fl oz/s', from_unit), 'fl oz/s'
elif from_unit == 'L/h':
return self.to_unit(values, 'gph', from_unit), 'gph'
else:
return self.to_unit(values, 'ft3/s', from_unit), 'ft3/s'
[docs] def to_si(self, values, from_unit):
"""Return values in SI and the units to which the values have been converted."""
if from_unit in self.si_units:
return values, from_unit
elif from_unit == 'cfm':
return self.to_unit(values, 'L/s', from_unit), 'L/s'
elif from_unit == 'fl oz/s':
return self.to_unit(values, 'mL/s', from_unit), 'mL/s'
elif from_unit == 'gph':
return self.to_unit(values, 'L/h', from_unit), 'L/h'
else:
return self.to_unit(values, 'm3/s', from_unit), 'm3/s'