WOLFRAM SYSTEMMODELER

dp_nominalDensityViscosity_DP

Generic pressure loss | calculate mass flow rate | nominal operation point | pressure loss law (exponent) | density and dynamic viscosity dependence

Wolfram Language

In[1]:=
SystemModel["Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalDensityViscosity_DP"]
Out[1]:=

Information

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, nominal dynamic viscosity) at an operation point via interpolation. This generic function considers the pressure loss law via a pressure loss exponent and the influence of density and dynamic viscosity 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_nominalDensityViscosity_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.

Syntax

DP = dp_nominalDensityViscosity_DP(IN_con, IN_var, m_flow)

Inputs (3)

IN_con

Type: dp_nominalDensityViscosity_IN_con

Description: Input record for function dp_nominalDensityViscosity_DP

IN_var

Type: dp_nominalDensityViscosity_IN_var

Description: Input record for function dp_nominalDensityViscosity_DP

m_flow

Type: MassFlowRate (kg/s)

Description: Mass flow rate

Outputs (1)

DP

Type: Pressure (Pa)

Description: Output for function dp_nominalDensityViscosity_DP