The Energy Storage and Transfer Package pane is used to activate the Energy Storage and Transfer package. The EST: GWE Energy Storage and Transfer Package pane is on the MODFLOW Packages and Programs dialog box under Groundwater Transport| | GWE: Groundwater Energy Transport Process.
ZERO_ORDER_DECAY_WATER—is a text keyword to indicate that zero-order decay will occur in the aqueous phase. That is, decay occurs in the water and is a rate per volume of water only, not per volume of aquifer (i.e., grid cell). Use of this keyword requires that DECAY_WATER (Decay_Water_Temperature data set) is specified in the GRIDDATA block of the EST input file.
ZERO_ORDER_DECAY_SOLID—is a text keyword to indicate that zero-order decay will occur in the solid phase. That is, decay occurs in the solid and is a rate per mass (not volume) of solid only. Use of this keyword requires that DECAY_SOLID (Decay_Solid_Temperature data set) is specified in the GRIDDATA block of the EST input file.
DENSITY_WATER—density of water used by calculations related to heat storage and conduction. This value is set to 1,000 kg/m3 if no overriding value is specified. A user-specified value should be provided for models that use units other than kilograms and meters or if it is necessary to use a value other than the default.
HEAT_CAPACITY_WATER—heat capacity of water used by calculations related to heat storage and conduction. This value is set to 4,184 J/kg/C if no overriding value is specified. A user-specified value should be provided for models that use units other than kilograms, joules, and degrees Celsius or it is necessary to use a value other than the default.
LATENT_HEAT_VAPORIZATION—latent heat of vaporization is the amount of energy that is required to convert a given quantity of liquid into a gas and is associated with evaporative cooling. While the EST package does not simulate evaporation, multiple other packages in a GWE simulation may. To avoid having to specify the latent heat of vaporization in multiple packages, it is specified in a single location and accessed wherever it is needed. For example, evaporation may occur from the surface of streams or lakes and the energy consumed by the change in phase would be needed in both the SFE and LKE packages. This value is set to 2,453,500 J/kg if no overriding value is specified. A user-specified value should be provided for models that use units other than joules and kilograms or if it is necessary to use a value other than the default.
