Jyotisolanki at 18:31, 7 January 2018

2018-01-07T18:31:43Z

Pratik kamble: Created page with "{| border=1 | '''Time''' | '''Narration''' |- | 00:01 | Hello and Welcome to the spoken tutorial on Using '''PyFoam Utilities''' |- | 00:07 | In this tutorial we will learn..."

2017-09-06T10:00:41Z

Created page with "{| border=1 | '''Time''' | '''Narration''' |- | 00:01 | Hello and Welcome to the spoken tutorial on Using '''PyFoam Utilities''' |- | 00:07 | In this tutorial we will learn..."

New page

{| border=1
| '''Time'''
| '''Narration'''

|-
| 00:01
| Hello and Welcome to the spoken tutorial on Using '''PyFoam Utilities'''

|-
| 00:07
| In this tutorial we will learn : About '''PyFoam Utilities'''

|-
| 00:12
| How to use '''PyFoam Utilites'''

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| 00:15
| How to run and plot data for the '''shockTube''' case using '''PyFoam Utilites'''

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| 00:22
| To record this tutorial I am using: '''Ubuntu Linux Operating System '''14.04

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| 00:30
| '''OpenFOAM version 2.3.0'''

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| 00:34
| '''PyFoam 0.6.5'''

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| 00:37
| As a prerequisite user should have : basic knowledge of running commands on the '''Linux terminal'''

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| 00:45
| And some experience of running and analyzing '''OpenFOAM''' cases

|-
|00:51
| Let me introduce you to '''PyFoam utilities.'''

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| 00:55
| '''Utilities '''are''' Python programs '''which come inbuilt with '''PyFoam.'''

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| 01:01
| Each '''utility''' has a specific function.
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| 01:05
| '''Utilities''' are executed from the '''command line.'''

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| 01:10
| List of '''utilites''' that can be viewed using '''tab completion'''

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| 01:16
| Open the '''terminal'''.

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| 01:18
|The list of '''utilities''' can be viewed by typing '''pyFoam ''' and then pressing '''Tab '''key twice

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| 01:29
| Let me switch back to the slides.

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| 01:32
|Each '''utility''' can be executed with the ''' minus help''' option.

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| 01:38
|This helps us to find out what it does and what its options are.

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| 01:44
| We are going to use the below '''PyFoam Utilities''' to run the '''Shock Tube''' case.

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| 01:51
|We will use – '''PyFoamRunner dot py''', '''PyFoamSamplePlot dot py'''

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| 01:58
|And then plot the necessary data using '''PyFoam'''

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|02:02
| '''PyFoamRunner dot py''' can be used to run '''cases'''.

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| 02:07
|It also generates '''log files '''for later use.

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| 02:12
| This '''utility''' is used to plot the various data obtained from the previously set up '''sampleDict.'''

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| 02:21
| '''Shock Tube '''is an '''instrument''' used to replicate and direct blast waves at a sensor

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| 02:29
| To model actual explosion and their effects

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| 02:34
|In this case, the rectangular tube has low pressure on the right side and high pressure on the left side.

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| 02:42
|Both the pressures zones are separated by a thin diaphragm.

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|02:47
| Open the '''Terminal''' , type the path for '''rhoCentralFoam''' inside '''compressible solver.'''

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| 02:56
| Type '''ls'''. You can see the '''shockTube''' case.

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| 03:02
| Type '''cd space shockTube'''

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|03:05
| You can see three folders '''0 dot org , constant '''and''' system.'''

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| 03:11
| We need to copy the '''0 '''file from''' 0 dot org.''' So type '''cp space minus r space 0 dot org space 0''' and press Enter

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| 03:26
| Now, go to the '''system''' folder by typing '''cd space system'''

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| 03:32
| Open the '''sampleDict''' file using '''gedit'''.

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| 03:37
| Go to the bottom of the file and '''Remove U.Component(0).'''

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| 03:45
|Replace it with '''Ux Uy '''and '''Uz.''' Remove '''rho''' as well.

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|03:53
| Save and exit the file.

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| 03:56
| Go one level back by typing '''cd dot dot '''

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| 04:01
| Run the command '''blockMesh''' to '''mesh''' the '''geometry.'''

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|04:06
| After this type '''setFields''' to set the pressure boundary condition.

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| 04:13
| Now we will use the '''pyFoam utility of pyFoamRunner.py'''

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| 04:19
|Type '''pyFoamRunner dot py space '''followed by name of the '''solver i.e. RhoCentralFoam'''.

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| 04:28
|This runs the '''case''' and creates a '''postProcessing log.'''

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| 04:33
| Type '''ls.'''

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| 04:35
|We can see the log files which are generated.

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| 04:39
| Now '''type sample''' to run the '''sample utility.'''

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| 04:44
| After this we can plot for various '''time steps''' using '''pyFoamSamplePlot dot py space dot slash space minus minus directory ie. Dir equal to postProcessing/sets space hyphen info'''

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| 05:10
|This will show which fields we have with us.

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| 05:14
| Then type ''' pyFoamSamplePlot.py space dot slash space minus minus dir equal to postProcessing/sets space minus minus field equal to capital T space minus minus mode equal to timesInOne space vertical pipe space gnuplot'''

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| 05:44
| The output generated will be a '''png file.'''

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| 05:48
| Type '''ls'''. We can see the '''png''' file which is generated.

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| 05:54
| In this tutorial, we learnt about '''PyFoam Utilities.'''

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| 05:58
|We also learnt to- Check for various '''pyFoam utilities'''

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| 06:03
| '''pyFoamRunner.py''' to run the '''solver'''

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| 06:07
| '''pyFoamSamplePlot''' utility to generate a '''png''' file

|-
|06:13
| Please post your timed queries in this forum.

|-
| 06:17
| Please post your general queries on '''OpenFOAM''' in this forum.

|-
| 06:22
| The '''FOSSEE '''team coordinates the TBC project.

|-
| 06:26
| The Spoken Tutorial Project is funded by NMEICT, MHRD, Govt. of India

For more details , visit this website.

|-
| 06:36
| This is Rahul Joshi from IIT Bombay signing off. Thanks for watching

|}

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-| Go to the bottom of the file and '''Remove U.Component(0).'''
+| Go to the bottom of the file and Remove '''U.Component(0).'''
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OpenFOAM/C3/Using-PyFoam-Utilities/English-timed - Revision history

Jyotisolanki at 18:31, 7 January 2018

Pratik kamble: Created page with "{| border=1 | '''Time''' | '''Narration''' |- | 00:01 | Hello and Welcome to the spoken tutorial on Using '''PyFoam Utilities''' |- | 00:07 | In this tutorial we will learn..."