pressureLoss_m_flow_totalPressureReturn pressure drop from constant loss factor and mass flow rate (dp = f(m_flow)) |
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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
Inputs (7)
| m_flow |
Type: MassFlowRate (kg/s) Description: Mass flow rate from port_a to port_b |
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| rho_a_des |
Type: Density (kg/m³) Description: Density at port_a, mass flow in design direction a -> b |
| rho_b_des |
Type: Density (kg/m³) Description: Density at port_b, mass flow in design direction a -> b |
| rho_b_nondes |
Type: Density (kg/m³) Description: Density at port_b, mass flow against design direction a <- b |
| rho_a_nondes |
Type: Density (kg/m³) Description: Density at port_a, mass flow against design direction a <- 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) |
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