.BuildingSystems.Technologies.DistrictHeatingNetworks.UndergroundPipes.BaseClasses.DHN_Umodels.UPrescribed .BuildingSystems.Technologies.DistrictHeatingNetworks.UndergroundPipes.BaseClasses.DHN_Umodels.UPrescribed
Values for U1 and U2 are defined by the parameters U1_constant and U2_constant respectively.