functionpressureLoss_m_flow_totalPressure
Return pressure drop from constant loss factor and mass flow rate (dp = f(m_flow))
Extends from Modelica.Icons.Function (Icon for functions).
Information
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.
Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| SI.MassFlowRate | m_flow | Mass flow rate from port_a to port_b | |
| SI.Density | rho_a_des | Density at port_a, mass flow in design direction a -> b | |
| SI.Density | rho_b_des | Density at port_b, mass flow in design direction a -> b | |
| SI.Density | rho_b_nondes | Density at port_b, mass flow against design direction a <- b | |
| SI.Density | rho_a_nondes | Density at port_a, mass flow against design direction a <- b | |
| LossFactorData | data | Constant loss factors for both flow directions | |
| SI.MassFlowRate | m_flow_small | 0.01 | Turbulent flow if |m_flow| >= m_flow_small |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Pressure | dp | Pressure drop (dp = port_a.p - port_b.p) |