v1612 utility postProcess

Introduction

Previous versions included a number of useful utilities such as Co and Mach etc and also a foamCalc utility. However, the number of such utilities quickly exploded and caused a large amount of code duplication, since the function is often also needed during simulation as well. To solve this problem, many utilities were converted into function objects (which allows their use during simulation) and a standalone postProcess utility was added to dispatch functions objects.

When function objects depend on solver fields, the new solver -postProcess option is used instead, which substitutes an alternative solver time-loop to execute the function objects.

Remapped names

The foamCalc and foamExecFlowFunctionObjects have been superceded by the postProcess utility (see postProcess -help) as well as a solver -postProcess option.

This table assists with mapping standalone or foamCalc names to postProcess:

Old	postProcess
Lambda2	postProcess -func Lambda2
Q	postProcess -func Q
enstrophy	postProcess -func enstrophy
flowType	postProcess -func flowType
patchAverage	postProcess -func 'patchAverage(name=inlet,p)'
patchIntegrate	postProcess -func 'patchIntegrate(name=inlet,p)'
probeLocations	postProcess -func 'probes(p, U)'
probeLocations	postProcess -func probes"
ptot	postProcess -func 'totalPressureCompressible(rho,U,p)'
ptot	postProcess -func 'totalPressureIncompressible(U,p)'
streamFunction	postProcess -func streamFunction
vorticity	postProcess -func vorticity
wallGradU	postProcess -func 'grad(U)'
wallHeatFlux	postProcess -func wallHeatFlux
wallShearStress	postProcess -func wallShearStress
wdot	postProcess -func XiReactionRate
writeCellCentres	postProcess -func writeCellCentres

This table assists with mapping foamExecFlowFunctionObjects names to the solver -postProcess option:

Old	Example solver -postProcess equivalent
Co	pimpleFoam -postProcess -func CourantNo
Mach	sonicFoam -postProcess -func MachNo
Pe	pimpleFoam -postProcess -func PecletNo
R	simpleFoam -postProcess -func R
createTurbulenceFields	simpleFoam -postProcess -func 'turbulenceFields(R, omega)'
stressComponents	simpleFoam -postProcess -funcs '(R components(turbulenceProperties:R))'
yPlus	simpleFoam -postProcess -func yPlus

The replacement for sample behaves slightly differently.

postProcess -func sample

To re-use an existing 'sampleDict' file, simply add the following entries:

type sets;
libs ("libsampling.so");

and run

postProcess -func sampleDict