# HydroGeoSphere/Thermal Energy

## Specified temperature fluxEdit

**ntime**Number of panels in the time-variable, specified temperature flux function. For each panel, enter the following:

- (a)
**ton_val, toff_val, bc_val, bc_temp**Time on [T], time off [T], specified volume flux (of liquid) [L^{3}/T] multiplied by the heat capacity [J kg^{−1}K^{−1}] and density [M/L^{3}] of the- boundary medium, temperature of water entering [K].

- (a)

Nodes in both the chosen faces and the currently active media (see Section 5.8.1) are assigned a time-variable temperature flux value.

Although a fluid volume flux **bc_val** is specified, this does not influence the flow solution in any way. It is merely intended to give the user a straightforward way to input a known amount of energy to the system, as a function of fluid volume and temperature.

**• • •**

The following instructions are used to define the atmospheric inputs discussed in Section 2.6.1.10, and summarized in Equation 2.121.

## Incoming Shortwave RadiationEdit

**ntime**Number of panels in the time-variable, incoming shortwave radiation function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], incoming shortwave radiation [M/T^{3}],^{↓}in Equation 2.122. Default value is 1.10 × 10^{2}J/(m^{2}s).**• • •**

- (a)

## Sinusoidal Incoming Shortwave RadiationEdit

**ntime**Number of panels in the time-variable, sinusoidal incoming shortwave radiation function. For each panel, enter the following:

- (a)
**ton_val, value, amp, phase, period**Time on [T], vertical shift (mid-point incoming shortwave radiation,^{↓}in Equation 2.122) [M/T^{3}], amplitude [M/T^{3}], phase, period [T].**• • •**

- (a)

## Cloud CoverEdit

**ntime**Number of panels in the time-variable, cloud cover function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], cloud cover [-], in Equation 2.124. Default value is 0.50.**• • •**

- (a)

## Incoming Longwave RadiationEdit

**ntime**Number of panels in the time-variable, incoming longwave radiation function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], incoming longwave radiation [M/T^{3}],^{↓}in Equation 2.125. Default value is 3.0 × 10^{2}J/(m^{2}s).**• • •**

- (a)

## Temperature of AirEdit

**ntime**Number of panels in the time-variable, air temperature function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], air temperature [K], in Equation 2.126. Default value is 15°C.**• • •**

- (a)

## Sinusoidal Temperature of AirEdit

**ntime**Number of panels in the time-variable, sinusoidal air temperature function. For each panel, enter the following:

- (a)
**ton_val, value, amp, phase, period**Time on [T], vertical shift (mid-point temperature, in Equation 2.126) [K], amplitude [K], phase, period [T].**• • •**

- (a)

These instructions are used to define the sensible heat flux in Equation 2.128 and latent heat flux in Equation 2.129.

## Density of AirEdit

**ntime**Number of panels in the time-variable, air density function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], density of air [M/L^{3}], in Equation 2.128. Default value is 1.225 kg/m^{3}.**• • •**

- (a)

## Specific Heat of AirEdit

**ntime**Number of panels in the time-variable, air specific heat function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], specific heat of air [L^{2}/(T^{2}K)], in Equation 2.128. Default value is 7.17 × 10^{2}J/(kg °K).**• • •**

- (a)

## Wind SpeedEdit

**ntime**Number of panels in the time-variable, wind speed function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], wind speed [L/T], in Equation 2.128. Default value is 1.0 m/s.**• • •**

- (a)

## Sinusoidal Wind SpeedEdit

**ntime**Number of panels in the time-variable, sinusoidal wind speed function. For each panel, enter the following:

- (a)
**ton_val, value, amp, phase, period**Time on [T], vertical shift (mid-point wind speed, in Equation 2.128) [L/T], amplitude [L/T], phase, period [T].**• • •**

- (a)

## Drag CoefficientEdit

**ntime**Number of panels in the time-variable, drag coefficient function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], drag coefficient [-], in Equation 2.128. Default value is 2.0 × 10^{−3}.**• • •**

- (a)

## Latent Heat of VapourizationEdit

**ntime**Number of panels in the time-variable, latent heat of vapourization function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], latent heat of vapourization [L^{2}/T^{2}], in Equation 2.129. Default value is 2.258 × 10^{6}J/kg.**• • •**

- (a)

## Specific Humidity of AirEdit

**ntime**Number of panels in the time-variable, air specific hunidity function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], specific humidity of air [M/M], in Equation 2.129. Default value is 0.01062.**• • •**

- (a)

## Soil-Water Suction at SurfaceEdit

**ntime**Number of panels in the time-variable, soil-water suction at surface function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], soil-water suction at surface [L], in Equation 2.131. Default value is 0.138 m.**• • •**

- (a)

## Saturation Vapour PressureEdit

**ntime**Number of panels in the time-variable, saturation vapour pressure function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], saturation vapour pressure [M/(L T^{2})], in Equation 2.132. Default value is 1.704 × 10^{3}Pa.**• • •**

- (a)

## Relative HumidityEdit

**ntime**Number of panels in the time-variable, relative humidity function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], relative humidity [-]. Default value is 0.75.**• • •**

- (a)

## Pressure of AirEdit

**ntime**Number of panels in the time-variable, air pressure function. For each panel, enter the following:

- (a)
**ton_val, value**Time on [T], air pressure [M/L T^{2}], in Equation 2.132. Default value is 1.013 × 10^{5}Pa.**• • •**

- (a)