WOLFRAM SYSTEM MODELER

pressureLoss_m_flow

Return pressure drop from constant loss factor and mass flow rate (dp = f(m_flow))

Wolfram Language

In[1]:=

SystemModel["Modelica.Fluid.Fittings.BaseClasses.QuadraticTurbulent.pressureLoss_m_flow"]

Out[1]:=

Information

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

Compute pressure drop from constant loss factor and mass flow rate (dp = f(m_flow)). For small mass flow rates(|m_flow| < m_flow_small), the characteristic is approximated by a polynomial in order to have a finite derivative at zero mass flow rate.

Syntax

dp = pressureLoss_m_flow(m_flow, rho_a, rho_b, data, m_flow_small)

Inputs (5)

m_flow	Type: MassFlowRate (kg/s) Description: Mass flow rate from port_a to port_b
rho_a	Type: Density (kg/m³) Description: Density at port_a
rho_b	Type: Density (kg/m³) Description: Density at port_b
data	Type: LossFactorData Description: Constant loss factors for both flow directions
m_flow_small	Default Value: 0.01 Type: MassFlowRate (kg/s) Description: Turbulent flow if \|m_flow\| >= m_flow_small

Outputs (1)

dp	Type: Pressure (Pa) Description: Pressure drop (dp = port_a.p - port_b.p)