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

Calculation of pressure loss for a valve with different geometries at overall flow regime for incompressible and single-phase fluid flow in dependence of its opening.

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

M_FLOW = dp_severalGeometryOverall_MFLOW(IN_con, IN_var, dp)

IN_con	Type: dp_severalGeometryOverall_IN_con Description: Input record for function dp_severalGeometryOverall_MFLOW
IN_var	Type: dp_severalGeometryOverall_IN_var Description: Input record for function dp_severalGeometryOverall_MFLOW
dp	Type: Pressure (Pa) Description: Pressure loss

M_FLOW	Type: MassFlowRate (kg/s) Description: Mass flow rate