This information is part of the Modelica Standard Library maintained by the Modelica Association.

Calculation of a generic pressure loss in dependence of nominal fluid variables (e.g., nominal density) via interpolation from an operation point. This generic function considers the pressure loss law via a nominal pressure loss (dp_nom), a pressure loss coefficient (zeta_TOT) and a pressure loss law exponent (exp) as well as the influence of density on pressure loss.

Generally this function is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. On the other hand the function dp_nominalPressureLossLawDensity_MFLOW is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. See more information.

DP = dp_nominalPressureLossLawDensity_DP(IN_con, IN_var, m_flow)

IN_con	Type: dp_nominalPressureLossLawDensity_IN_con Description: Input record for function dp_nominalPressureLossLawDensity_DP
IN_var	Type: dp_nominalPressureLossLawDensity_IN_var Description: Input record for function dp_nominalPressureLossLawDensity_DP
m_flow	Type: MassFlowRate (kg/s) Description: Mass flow rate

DP	Type: Pressure (Pa) Description: Output for function dp_nominalPressureLossLawDensity_yesAJac_DP