`gnome.ops.density`¶

Module Contents¶

`init_density`(sc, num_released[, water, substance, ...])	Initializes the density of the last num_rel elements of a spill container (sc),
`recalc_density`(sc[, water, aggregate])	Recalculates the density of the elements in a spill container. This is necessary
`_get_k_rho_weathering_dens_update`(substance, temp_in_k)	use lru_cache on substance. substance is expected to be a GnomeOil,

gnome.ops.density.init_density(sc, num_released, water=None, substance=None, aggregate=True)¶

Initializes the density of the last num_rel elements of a spill container (sc), taking into account environmental conditions.

Parameters:

sc – spill container
num_rel – int
water – Water object to use. If None, uses default values
substance – gnome.spills.substance.Substance or subclass thereof
aggregate – Flag for whether to trigger mass balance updates in spill container

gnome.ops.density.recalc_density(sc, water=None, aggregate=True)¶: Recalculates the density of the elements in a spill container. This is necessary if ‘mass_components’ have changed. :param sc: spill container :param water: Water object to use. If None, uses default :param aggregate: Flag for whether to trigger mass balance updates in spill container

gnome.ops.density._get_k_rho_weathering_dens_update(substance, temp_in_k)¶: use lru_cache on substance. substance is expected to be a GnomeOil, if this object stays the same, then return the cached value for k_rho This depends on initial mass fractions, initial density and fixed component densities