/// <summary>
/// Pump gas from this mixture to the output mixture.
/// Amount depends on target pressure.
/// </summary>
/// <param name="mixture">The mixture to pump the gas from</param>
/// <param name="output">The mixture to pump the gas to</param>
/// <param name="targetPressure">The target pressure to reach</param>
/// <returns>Whether we could pump air to the output or not</returns>
public bool PumpGasTo(GasMixture mixture, GasMixture output, float targetPressure)
{
var outputStartingPressure = output.Pressure;
var pressureDelta = targetPressure - outputStartingPressure;
if (pressureDelta < 0.01)
{
// No need to pump gas, we've reached the target.
return(false);
}
if (!(mixture.TotalMoles > 0) || !(mixture.Temperature > 0))
{
return(false);
}
// We calculate the necessary moles to transfer with the ideal gas law.
var transferMoles = pressureDelta * output.Volume / (mixture.Temperature * Atmospherics.R);
// And now we transfer the gas.
var removed = mixture.Remove(transferMoles);
Merge(output, removed);
return(true);
}
/// <summary>
/// Releases gas from this mixture to the output mixture.
/// If the output mixture is null, then this is being released into space.
/// It can't transfer air to a mixture with higher pressure.
/// </summary>
public bool ReleaseGasTo(GasMixture mixture, GasMixture?output, float targetPressure)
{
var outputStartingPressure = output?.Pressure ?? 0;
var inputStartingPressure = mixture.Pressure;
if (outputStartingPressure >= MathF.Min(targetPressure, inputStartingPressure - 10))
{
// No need to pump gas if the target is already reached or input pressure is too low.
// Need at least 10 kPa difference to overcome friction in the mechanism.
return(false);
}
if (!(mixture.TotalMoles > 0) || !(mixture.Temperature > 0))
{
return(false);
}
// We calculate the necessary moles to transfer with the ideal gas law.
var pressureDelta = MathF.Min(targetPressure - outputStartingPressure, (inputStartingPressure - outputStartingPressure) / 2f);
var transferMoles = pressureDelta * (output?.Volume ?? Atmospherics.CellVolume) / (mixture.Temperature * Atmospherics.R);
// And now we transfer the gas.
var removed = mixture.Remove(transferMoles);
if (output != null)
{
Merge(output, removed);
}
return(true);
}