[General] Vectors / streamtracers : velocity components in different files

samrat_rao · October 27, 2015, 05:03

Hi,

I am using Paraview 4.2. The datasets i have are in binary VTK format.

I need to draw vector plots and streamlines in 3D. Each velocity component (U,V,W) is in a separate file.

The headers of say U velocity file are as follows:

# vtk DataFile Version 6.0
Non-uniform Rectilinear - Rectilinear Grid
BINARY
DATASET RECTILINEAR_GRID
DIMENSIONS 354 354 506
X_COORDINATES 354 double
<binary data>
Y_COORDINATES 354 double
<binary data>
Z_COORDINATES 506 double
<binary data>
POINT_DATA 63409896
SCALARS U double
LOOKUP_TABLE default
<binary data>

Now i load each U, V, W file and merge them using Append Attributes filter.
Then i use Calculator filter like : U*iHat + V*jHat + W*kHat
Finally i use wither Glyph or Stream Tracer filter.

But i am not seeing the flow as it should be.

Can someone tell me if i am doing things correctly?

Thanks.

Flowkersma · November 2, 2015, 14:55

Hi,

I can't find anything wrong what you are doing. Can you share your data so I could try to find a solution?

Regards,
Mikko

October 27, 2015, 05:03	Vectors / streamtracers : velocity components in different files	#1
samrat_rao New Member Samrat Rao Join Date: Oct 2015 Posts: 1 Rep Power: 0	Hi, I am using Paraview 4.2. The datasets i have are in binary VTK format. I need to draw vector plots and streamlines in 3D. Each velocity component (U,V,W) is in a separate file. The headers of say U velocity file are as follows: # vtk DataFile Version 6.0 Non-uniform Rectilinear - Rectilinear Grid BINARY DATASET RECTILINEAR_GRID DIMENSIONS 354 354 506 X_COORDINATES 354 double <binary data> Y_COORDINATES 354 double <binary data> Z_COORDINATES 506 double <binary data> POINT_DATA 63409896 SCALARS U double LOOKUP_TABLE default <binary data> Now i load each U, V, W file and merge them using Append Attributes filter. Then i use Calculator filter like : UiHat + VjHat + W*kHat Finally i use wither Glyph or Stream Tracer filter. But i am not seeing the flow as it should be. Can someone tell me if i am doing things correctly? Thanks.

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November 2, 2015, 14:55		#2
Flowkersma Senior Member Mikko Join Date: Jul 2014 Location: The Hague, The Netherlands Posts: 243 Rep Power: 12	Hi, I can't find anything wrong what you are doing. Can you share your data so I could try to find a solution? Regards, Mikko