Difference between revisions of "OpenFOAM guide/Table of common fields"

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m (Reverted edit of CauWs6, changed back to last version by Bgschaid)
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This table should give a list of the field names commonly written by the OpenFOAM-Solver.
 
This table should give a list of the field names commonly written by the OpenFOAM-Solver.
  
It was inspired by the discussion [http://openfoam.cfd-online.com/forum/messages/1/655.html What's the meaning of variables in the computed results] in the MessageBoard:
+
It was inspired by the discussion [http://www.cfd-online.com/Forums/openfoam-post-processing/61422-whatbs-meaning-variables-computed-results.html What's the meaning of variables in the computed results] in the Forum:
  
  
{| border="1" cellpadding="2"
+
{| class="wikitable"
| Fields written by OpenFOAM
+
|+ '''Fields written by OpenFOAM'''
 
|-
 
|-
 
! Filename !! Description !! Dimension
 
! Filename !! Description !! Dimension
Line 11: Line 11:
 
! U
 
! U
 
| Velocity  
 
| Velocity  
|| <math>\frac{m}{s}</math>
+
| align="center" | <math>\frac{m}{s}</math>
 
|-
 
|-
 
! U_0
 
! U_0
 
| Velocity at previous timestep (needed for restarting higher order time-stepping schemes)
 
| Velocity at previous timestep (needed for restarting higher order time-stepping schemes)
|| <math>\frac{m}{s}</math>
+
| align="center" | <math>\frac{m}{s}</math>
 
|-
 
|-
 
! phi
 
! phi
| Flow through cell faces
+
| Flow through cell faces. Depends on whether the solver is for incompressible or compressible flow.
|| <math>\frac{m^3}{s}</math>
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| align="center" | incompressible flow: <math>\frac{m^3}{s}</math> <hr> compressible flow: <math>\frac{kg}{s}</math>
 
|-
 
|-
 
! p
 
! p
 
| Pressure
 
| Pressure
|| <math>\frac{m^2}{s^2}</math>
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| align="center" | <math>\frac{m^2}{s^2}</math>
 
|-
 
|-
 
! epsilon
 
! epsilon
 
| Turbulence dissipation rate
 
| Turbulence dissipation rate
|| <math>\frac{m^2}{s^3}</math>
+
| align="center" | <math>\frac{m^2}{s^3}</math>
 
|-
 
|-
 
! k
 
! k
 
| Turbulence kinetic energy
 
| Turbulence kinetic energy
|| <math>\frac{m^2}{s^2}</math>
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| align="center" | <math>\frac{m^2}{s^2}</math>
 
|-
 
|-
 
! rho
 
! rho
 
| Gas density
 
| Gas density
|| <math>\frac{kg}{m^3}</math>
+
| align="center" | <math>\frac{kg}{m^3}</math>
 
|-
 
|-
 
! alpha
 
! alpha
 
| Dispersed phase volume fraction
 
| Dispersed phase volume fraction
|| -
+
| align="center" | (Dimensionless, usually <br> within the interval [0, 1])
 
|-
 
|-
 
! Theta
 
! Theta
 
| Granular temperature
 
| Granular temperature
|| <math>\frac{m^2}{s^2}</math>
+
| align="center" | <math>\frac{m^2}{s^2}</math>
 
|}
 
|}
 +
 +
[[Category:OpenFOAM overview]]

Revision as of 10:26, 29 September 2013

This table should give a list of the field names commonly written by the OpenFOAM-Solver.

It was inspired by the discussion What's the meaning of variables in the computed results in the Forum:


Fields written by OpenFOAM
Filename Description Dimension
U Velocity \frac{m}{s}
U_0 Velocity at previous timestep (needed for restarting higher order time-stepping schemes) \frac{m}{s}
phi Flow through cell faces. Depends on whether the solver is for incompressible or compressible flow. incompressible flow: \frac{m^3}{s}
compressible flow: \frac{kg}{s}
p Pressure \frac{m^2}{s^2}
epsilon Turbulence dissipation rate \frac{m^2}{s^3}
k Turbulence kinetic energy \frac{m^2}{s^2}
rho Gas density \frac{kg}{m^3}
alpha Dispersed phase volume fraction (Dimensionless, usually
within the interval [0, 1])
Theta Granular temperature \frac{m^2}{s^2}