ReynoldsNumber_m_flow

Return Reynolds number from m_flow, mu, D, A

Information

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

Simplified calculation of Reynolds Number for flow through pipes or orifices; using the mass flow rate m_flow instead of the velocity v to express inertial forces.

  Re = |m_flow|*diameter/A/μ
with
  m_flow = v*ρ*A

Syntax

Re = ReynoldsNumber_m_flow(m_flow, mu, D, A)

Inputs (4)

m_flow	Type: MassFlowRate (kg/s) Description: Mass flow rate
mu	Type: DynamicViscosity (Pa·s) Description: Dynamic viscosity
D	Type: Length (m) Description: Characteristic dimension (hydraulic diameter of pipes or orifices)
A	Default Value: Modelica.Constants.pi / 4 * D * D Type: Area (m²) Description: Cross sectional area of fluid flow

Outputs (1)

Re	Type: ReynoldsNumber Description: Reynolds number