- 1. 25CAE@ 2013. 9.21 Using PyFoam as library
2. 2013/9/21 25@ 2 / Python PyFoam cavity tutorial 3. /
2013/9/21 25@ 3 OpenMDAO OpenFOAMpython PyFoampython python 4.
2013/9/21 25@ 4 python ( 2.7.3) OpenFOAM ( 2.2.x) PyFoam ( 0.6.1)
numpy python() ipython,matplotlib,scipy etc MPI eclipse (+PyDev) 5.
Python(1) 2013/9/21 25@ 5 pythonor ipython shell python
>>>print Hello World! Hello World! python code > python
(or ipython) shell command 6. Python(2) 2013/9/21 25@ 6
>>> a=1 >>> type(a) int >>> b=1.0
>>> type(b) float >>> type(a+b) float
>>> a+a Traceback (most recent call last): File "", line
1, in TypeError: unsupported operand type(s) for +: 'int' and 'str'
1 2 3 4 5 6 python code 7. Python(3) 2013/9/21 25@ 7 >>>
l=[1,2,san] >>> l[2] san >>> l[2]=3 >>>
l[2] 3 >>> d={east:Mac,west:uMakudo} >>> d[east]
Makudo >>> t=(l,a) >>> t[1]=1 Traceback
TypeError: tuple 1 2 3 4 5 6 7 8 python code 8. Python(4) 2013/9/21
25@ 8 if >>> a=1 >>> if a==1: . . . print a is ,a
. . . else: . . . print a is not ,a . . . a is 1 >>> if
a==1: . . . print a is ,a IndentationError: expected an indented
block 1 2 3 4 5 6 7 8 python code 9. Python(5) 2013/9/21 25@ 9 for
>>> for i in l: . . . print 2**i . . . 2 4 8 >>>
for i in xrange(0,1): . . . print i . . . 0 1 1 2 3 4 5 6 python
code 10. Python(6) 2013/9/21 25@ 10 >>> def myfunc(val): .
. . return val+10 . . . >>> myfunc(1) 11 1 2 3 4 python
code 11. Python(7) 2013/9/21 25@ 11 >>> import numpy
>>> matA=numpy.array([[1,2],[2,3]]) >>> matA
array([[1, 2], [ 2, 3]]) >>> import numpy as np
>>> x=np.array([1,2]) >>> from numpy import dot
>>> y=dot(matA,x) >>> y array([5,8]) >>>
exit() 1 2 3 4 5 6 7 8 9 python code 12. Python(8) 2013/9/21 25@ 12
shellpython > echo print Hello > test.py > python test.py
Hello shell command 13. PyFoam 2013/9/21 25@ 13 PyFoam tar
file(subversion)API PYTHONPATH prefix PYTHONPATH > cd PyFoam
> python setup.py install --prefix=~/PyFoam > export
PYTHONPATH=~/PyFoam/lib/python2.7/site- packages:$PYTHONPATH shell
command 14. Cavity tutorial 2013/9/21 25@ 14 cavity 23 [m] [m]
[m/s] 1 0.1 0.1 0.5 2 0.2 0.2 1.0 L H U 15. Cavity tutorial(1)
2013/9/21 25@ 15 SolutionDirectory (Case) >>> import
PyFoam.FoaInformation >>> cavitydir=
PyFoam.FoamInformation.foamTutorials() +
"/incompressible/icoFoam/cavity" >>> from
PyFoam.RunDictionary.SolutionDirectory import SolutionDirectory
>>> cavityTut=SolutionDirectory(PyFoam.FoamInformation.
foamTutorials() +"/incompressible/icoFoam/cavity") >>>
cavityCase=cavityTut.cloneCase("./cavity") >>>
cavityCase.name 1 2 3 4 5 6 python code 16. Cavity tutorial(2)
2013/9/21 25@ 16 template > cd cavity > cp
constant/polyMesh/blockMeshDict
constant/polyMesh/blockMeshDict.template > gedit
constant/polyMesh/blockMeshDict.template shell command
blockMeshDict.tem plate 17. Cavity tutorial(3) 2013/9/21 25@ 17
TemplateFile blockMeshDict $L$,$H$ Dict TemplateFile >>>
from PyFoam.Basics.TemplateFile import TemplateFile >>>
bMDictTemp=TemplateFile(cavityCase.blockMesh() +
".template",expressionDelimiter="$") >>>
bMDictTemp.writeToFile(cavityCase.blockMesh(), {"L":1,"H":2}) 1 2 3
python code 18. Cavity tutorial(4) 2013/9/21 25@ 18
ParsedParameterFile >>> from
PyFoam.RunDictionary.ParsedParameterFile import ParsedParameterFile
>>> U=ParsedParameterFile(cavityCase.initialDir() + "/U")
>>> U['boundaryField']['movingWall']['value'] 'uniform (1
0 0)' >>> from PyFoam.Basics.DataStructures import Vector
>>> U['boundaryField']['movingWall']['value'].setUniform(
Vector(0.5,0,0)) >>> U.writeFile() 1 2 3 4 5 python code
19. Cavity tutorial(5) 2013/9/21 25@ 19 BasicRunner OpenFOAM
>>> from PyFoam.Execution.BasicRunner import BasicRunner
>>> import shlex >>> args=shlex.split("blockMesh
-case " + cavityCase.name) >>>
block=BasicRunner(args,silent=True) >>>
summary=block.start() >>> summary {OK: True, casefullname:
>>>block.runOK() True 1 2 3 4 5 6 7 python code 20. Cavity
tutorial(6) 2013/9/21 25@ 20 LogAnalyzerLineAnalyzer
LineAnalyzerlog LogAnalyzerLineAnalyzer log >>> from
PyFoam.LogAnalysis.FoamLogAnalyzer import FoamLogAnalyzer
>>> from PyFoam.LogAnalysis.ContinuityLineAnalyzer import
GeneralContinuityLineAnalyzer >>>
analyzer=FoamLogAnalyzer(progress=False) >>>
analyzer.addAnalyzer("Continuity",
GeneralContinuityLineAnalyzer(doTimelines=True, doFiles=False,
singleFile=False, startTime=None, endTime=None)) 1 2 3 4 python
code 21. Cavity tutorial(7) 2013/9/21 25@ 21 AnalyzedRunner
LogAnalyzer >>> from PyFoam.Execution.AnalyzedRunner
import AnalyzedRunner >>> args=shlex.split(icoFoam -case "
+ cavityCase.name) >>>
ico=AnalyzedRunner(analyzer,args,silent=True) >>>
summary=ico.start() >>> summary {'OK': True, 'analyzed':
{'Continuity': >>>ico.runOK() True 1 2 3 4 5 6 python code
22. Cavity tutorial(8) 2013/9/21 25@ 22 AnalyzedRunner
AnalyzedRunnerPyFoam.LogAnalysis. LogAnalyzerApplicationlog
FoamLogAnalyzer LineAnalyzer LineAnalyzerfile LineAnalyzer
LineAnalyzer( )API 23. Cavity tutorial(9) 2013/9/21 25@ 23
SolutionDirectory.clear() cavityCase >>>
cavityCase.clear()1 python code 24. Cavity tutorial(10) 2013/9/21
25@ 24 MeshmovingWall 0.5 [s] p cavityautoRun.py #!/usr/bin/env
python import shlex,sys,json import numpy as np autoRun.py 25.
Cavity tutorial(11) 2013/9/21 25@ 25 () from
PyFoam.RunDictionary.SolutionDirectory import SolutionDirectory
from PyFoam.Basics.TemplateFile import TemplateFile from
PyFoam.Basics.DataStructures import Vector from
PyFoam.RunDictionary.ParsedParameterFile import ParsedParameterFile
from PyFoam.Execution.BasicRunner import BasicRunner from
PyFoam.Error import error autoRun.py () 26. Cavity tutorial(12)
2013/9/21 25@ 26 () def main(): #cavity case set
cavityCase=SolutionDirectory("./cavity") #result list results=[]
#blockMeshTemplate bMDictTemp=TemplateFile(cavityCase.blockMesh() +
".template",expressionDelimiter="$") #0/U
U=ParsedParameterFile(cavityCase.initialDir() + "/U") autoRun.py ()
27. Cavity tutorial(13) 2013/9/21 25@ 27 () for blockL in [1,2]:
for blockH in [1,2]: for Uwall in [0.5, 1.0]: #clear case
cavityCase.clear() autoRun.py () #edit files
bMDictTemp.writeToFile(cavityCase.blockMesh(),{"L":blockL,"H"
:blockH})
U['boundaryField']['movingWall']['value'].setUniform(Vector(Uw
all,0,0)) U.writeFile() () 28. Cavity tutorial(14) 2013/9/21 25@ 28
() #blockMesh args=shlex.split("blockMesh -case " +
cavityCase.name) block=BasicRunner(args,silent=True) block.start()
if not block.runOK(): error("There was a problem with blockMesh")
sys.exit(1) autoRun.py () () 29. Cavity tutorial(15) 2013/9/21 25@
29 () #icoFoam args=shlex.split("icoFoam -case " + cavityCase.name)
ico=BasicRunner(args,silent=True) ico.start() if not ico.runOK():
error("There was a problem with icoFoam") sys.exit(1) autoRun.py ()
() 30. Cavity tutorial(16) 2013/9/21 25@ 30 () #post
p_latest=ParsedParameterFile(cavityCase.latestDir() + '/p')
pmax=np.array(p_latest['internalField'].val).max() #append results
results.append({"L":blockL,"H":blockH,"Uwall":Uwall,"pmax":p max})
autoRun.py () () 31. Cavity tutorial(17) 2013/9/21 25@ 31 () #print
results print json.dumps(results,indent=4) if __name__ ==
'__main__': main() autoRun.py () (1) 32. Cavity tutorial(18)
2013/9/21 25@ 32 autoRun.py >python autoRun.py [ { "H": 1,
"Uwall": 0.5, "L": 1, "pmax": 2.3693599999999999 }, { "H": 1,
"Uwall": 1.0, shell command 33. / 2013/9/21 25@ 33 OpenFOAMPyFoam
shellsed OpenMDAO http://en.sourceforge.jp/projects/sfnet_openfoam-
extend/downloads/OpenFOAM_Workshops/OFW5_2010_Gothenburg/Advanced_Training
/pyFoamAdvanced.pdf
