WOLFRAM SYSTEM MODELER

ReynoldsNumber_m_flow

Return Reynolds number from m_flow, mu, D, A

Wolfram Language

In[1]:=
SystemModel["Modelica.Fluid.Pipes.BaseClasses.CharacteristicNumbers.ReynoldsNumber_m_flow"]
Out[1]:=

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
See also Pipes.BaseClasses.CharacteristicNumbers.ReynoldsNumber.

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