---
name: "freefoam-graphResKE"
section: "1"
platform: "linux"
package: "freefoam"
version: "0.1.0+dfsg+1-3"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/freefoam-graphResKE"
---

# freefoam-graphResKE(1)

Extract the residuals of k and epsilon at each time step

## NAME

freefoam-graphResKE - Extract the residuals of k and epsilon at each time step

## SYNOPSIS

**freefoam graphResKE** *\<logFile\>*

## DESCRIPTION

The utility extracts the residuals of the k and epsilon equations at each time step and writes them to *residualKE.dat*. The file has the following format:

```
Solver Performance
number of iterations
residual
0 0
0 0
<nGraphs>
k
0
<nK>
1.000000 <resK1>
2.000000 <resK2>
3.000000 <resK3>
4.000000 <resK4>
5.000000 <resK5>
...
epsilon
0
<nEpsilon>
1.000000 <resEpsilon1>
2.000000 <resEpsilon2>
3.000000 <resEpsilon3>
4.000000 <resEpsilon4>
5.000000 <resEpsilon5>
...
```

where *\<nK\>* and *\<nEpsilon\>* is the number of data points for *k* and *epsilon*, respectively. *\<resKX\>* and *\<resEpsilonX\>* are the residual at iteration *X* for *k* and *epsilon*.

## OPTIONS

*\<logFile\>*

A FreeFOAM log file (i.e. the screen-output created by a FreeFOAM solver)

## SEE ALSO

An overview of FreeFOAM is given in [**freefoam**(1)](/freefoam/1.md).

## AUTHOR

OpenCFD Ltd.

## FREEFOAM

Part of the [**freefoam**(1)](/freefoam/1.md) suite.

## COPYRIGHT

• Copyright © 1991-2010 OpenCFD Ltd.

• Copyright © 2008-2012 Michael Wild.