AixLib.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.InternalResistancesTwoUTubeNegative

# .AixLib.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.Validation.InternalResistancesTwoUTubeNegative

Validation of the thermal resistances using the method of Bauer et al. (2011) for a double U-tube borehole

## Information

This example validates the implementation of AixLib.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.internalResistancesTwoUTube for the evaluation of the internal thermal resistances of a double U-tube borehole.

In this case, the shank spacing is defined such that the pipes are close to the borehole wall, rendering the short-circuit thermal resistances negative. The capacity location `x` is then automatically set to zero.

## Revisions

- November 22, 2023, by Michael Wetter:
  Corrected use of `getInstanceName()` which was called inside a function which is not allowed.
  This is for IBPSA, #1814.
- June 21, 2018, by Massimo Cimmino:
  First implementation.

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