Overview🔗
- Category: Incompressible
- steady state
- incompressible
- turbulence
- evolves the flow system to reach a target average velocity
- useful to set velocity and turbulence inflow conditions based on a fully developed flow profile
Equations🔗
The velocity is modelled according to the equation
\[\div \tensor{R}_{dev} = \grad p + S_U\]where the velocity and pressure gradient are corrected to achieve the target velocity \(\overline{\u}\). After solving the above equation, the velocity is corrected from the current volume-averaged velocity, i.e.
\[\u^{n+1} = \u^n + \left( \overline{\u} - \overline{\u}^n \right)\]and the pressure gradient from:
\[\left(\grad p\right)^{n+1} = \left(\grad p\right)^{n} + \overline{\frac{1}{\mat{A}}\left( \overline{\u} - \overline{\u}^n \right)}\]where the averages are calculated as volume averages.
Input requirements🔗
Mandatory fields:
- p: Kinematic pressure [m2/s2]
- U: velocity [m/s]
Physical models🔗
-
turbulence:
constant/turbulenceProperties -
finite volume options:
constant/fvOptions(optional)
Solution controls🔗
Further information🔗
Source code
See also
Tutorials
