[General] How to deal with this unclear visualization

Max Beer · December 5, 2016, 23:46

I use mfix to simulate CFD, but when i use Paraview to visualize, it is so blur. I have no idea to do with it. could anyone tell me why this happen and what should i do
Thank you very much

Joshua14 · December 12, 2016, 18:01

Max,

It looks like your issue is simply how your visualizing the data. In the drop bar for selecting things like T(Temperature) or U(velocity), there are two sets of the components. The first has an orange cube to the left of each one and the second set has a red circle.

It appears that you have the orange cube selected. This will give the data as per cell. As your mesh is coarse this gives your "blur" look. If you change it to the circle it will smooth your data giving it a more complete look.

Joshua

Crevetola · January 25, 2017, 13:17

Indeed, this is due to the coarse mesh.
Use the filter CellDatatoPointData and the visualization should be smoother.
Possibly generating a denser grid for the CFD simulation would help both the accuracy of the simulation and the visualization alike.
Hope that helps,

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
HexaLab a new online tool for visualization and evaluation of hexahedral mesh	cignoni	Main CFD Forum	1	June 28, 2018 06:33
[General] How to Increase Z axis	jeosol	ParaView	16	May 10, 2017 04:37
Visualization of higher order solution	shyamdsundar	Main CFD Forum	1	July 23, 2010 04:55
How to deal with source term when using RKschemes?	leaf	Main CFD Forum	2	May 11, 2006 11:34
Flow Visualization of impinging swirling flow on the wall.	sangaria	Main CFD Forum	2	March 26, 1999 14:31

December 12, 2016, 18:01		#2
Joshua14 Member Joshua Join Date: Dec 2016 Location: St. Louis, Missouri Posts: 91 Rep Power: 10	Max, It looks like your issue is simply how your visualizing the data. In the drop bar for selecting things like T(Temperature) or U(velocity), there are two sets of the components. The first has an orange cube to the left of each one and the second set has a red circle. It appears that you have the orange cube selected. This will give the data as per cell. As your mesh is coarse this gives your "blur" look. If you change it to the circle it will smooth your data giving it a more complete look. Joshua

January 25, 2017, 13:17		#3
Crevetola New Member ALEXIS L. Join Date: Nov 2011 Location: Florida Posts: 5 Rep Power: 15	Indeed, this is due to the coarse mesh. Use the filter CellDatatoPointData and the visualization should be smoother. Possibly generating a denser grid for the CFD simulation would help both the accuracy of the simulation and the visualization alike. Hope that helps,