Render Velocity values along a slice

lpashwin · May 5, 2015, 17:49

I am a novice OpenFoam and Paraview user. I have run a tutorial case and I have converted the results into VTK using FoamToVtk. I would now like to plot/render a sliced view of the velocity values at a specific time step.

Below is the code I have so far. I am unable to figure out how to activate the velocity and display(/render/plot) it at different time steps.

Code:

## list of the time steps  
time_step=[0,520,1021,1522,2023]

## File path
file_path="/home/lpashwin/to_home_server/tutorial_case/DTCHull/VTK/"

## Case Name 
case_name="DTCHull_"

## File names 
file_names=[file_path+case_name+str(ii)+'.vtk' for ii in time_step]

# Reading in the VTK Files (reader is the source as per the manual definition)
reader=OpenDataFile(file_names)

# Creating a Slice View
sliced_view=CreateView("MultiSlice")
sliced_view.YSliceValue=[1]


Show(view=sliced_view)
Render(view=sliced_view)

Cyp · May 5, 2015, 18:01

You can use sample utility.

Code:

cp    $FOAM_UTILITIES/postProcessing/sampling/sample/sampleDict    system/.

Then edit this file to set up the plane you want to extract and the output format (vtk for instance, for visualization with paraview). Then run,

Code:

sample

Cheers,

lpashwin · May 5, 2015, 19:45

Thank you Cyp for the quick response. I output a VTK file using Sample. Is there any quick and dirty way to create a jpeg file from the VTK files. I am running my simulations on a linux server and creating jpg files makes it easier to view the results on my windows based client.

May 5, 2015, 17:49	Render Velocity values along a slice	#1
lpashwin New Member Ashwin Join Date: Apr 2015 Posts: 6 Rep Power: 11	I am a novice OpenFoam and Paraview user. I have run a tutorial case and I have converted the results into VTK using FoamToVtk. I would now like to plot/render a sliced view of the velocity values at a specific time step. Below is the code I have so far. I am unable to figure out how to activate the velocity and display(/render/plot) it at different time steps. Code: ## list of the time steps time_step=[0,520,1021,1522,2023] ## File path file_path="/home/lpashwin/to_home_server/tutorial_case/DTCHull/VTK/" ## Case Name case_name="DTCHull_" ## File names file_names=[file_path+case_name+str(ii)+'.vtk' for ii in time_step] # Reading in the VTK Files (reader is the source as per the manual definition) reader=OpenDataFile(file_names) # Creating a Slice View sliced_view=CreateView("MultiSlice") sliced_view.YSliceValue=[1] Show(view=sliced_view) Render(view=sliced_view)

May 5, 2015, 18:01		#2
Cyp Senior Member Cyprien Join Date: Feb 2010 Location: Stanford University Posts: 299 Rep Power: 18	You can use sample utility. Code: cp $FOAM_UTILITIES/postProcessing/sampling/sample/sampleDict system/. Then edit this file to set up the plane you want to extract and the output format (vtk for instance, for visualization with paraview). Then run, Code: sample Cheers,

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May 5, 2015, 19:45		#3
lpashwin New Member Ashwin Join Date: Apr 2015 Posts: 6 Rep Power: 11	Thank you Cyp for the quick response. I output a VTK file using Sample. Is there any quick and dirty way to create a jpeg file from the VTK files. I am running my simulations on a linux server and creating jpg files makes it easier to view the results on my windows based client.