Model of a linear DC resistor that can vary with respect to temperature.
The model implements the Ohm's law
V = R(T) i.
The resistance R(T) varies depending on the temperature T as
R(T) = R (1 + α (T - Tref)),
where the resistance R is the reference value of the
resistance, α is the linear temperature coefficient, and
Tref is the reference temperature. The
temperature T is the temperature of the heat port if
useHeatPort = true.
P_nominal to avoid an error when
translating the model in Dymola's pedantic mode.