How to obtain the velocity in each point I want

juansc1941 · February 7, 2017, 16:59

Hello, I have a simulation already done in fluent, I have de .Dat file of the results of the simulation, however this file shows me the velocity only in the nodes. I really want to have the value of the velocity in every point, not only in the nodes, and export this file as an ASCII file. Do anyone know a way to do this in fluent, cfd-post or tecplot? Thank you

Kushal Puri · February 8, 2017, 06:39

Quote:

Originally Posted by juansc1941

Hello, I have a simulation already done in fluent, I have de .Dat file of the results of the simulation, however this file shows me the velocity only in the nodes. I really want to have the value of the velocity in every point, not only in the nodes, and export this file as an ASCII file. Do anyone know a way to do this in fluent, cfd-post or tecplot? Thank you

Do tou know the location of the cordinates.?

juansc1941 · February 8, 2017, 07:24

I define the location of the coordinates, the idea is to obtain the Information in many points that I define, not only the one given in the nodes. This implies that it should be an automatic procedure because there are a lot of points.

Kushal Puri · February 8, 2017, 07:25

Quote:

Originally Posted by juansc1941

I define the location of the coordinates, the idea is to obtain the Information in many points that I define, not only the one given in the nodes. This implies that it should be an automatic procedure because there are a lot of points.

you just create points at the locations and then u can easily use the CFD table viewer to get velocity at all those points.

juansc1941 · February 8, 2017, 08:11

Thank you that is what I need. However I have 2 questions, I already create the point, but I don´t know how to put the value of the velocity of that point in the table.

Do you know a way to generate this points in an automated way?, I mean I need to generate points in all the mesh, that is like 4 Millions of points, so I can´t do it by hand.

pakk · February 8, 2017, 08:36

In Fluent: File->Export->Solution Data
Select ASCII, the things you want and the settings you want.

juansc1941 · February 8, 2017, 08:43

The problem of doing that, is that it only exports the values in the nodes and I want it in other points that I define

pakk · February 9, 2017, 06:16

If your strategy to solve your problem involves the step of defining 4 million points and extracting information on those 4 million points instead of using the known information on the nodes, you probably have a inefficient strategy.

You can do this. Basic steps: find out how to use the Text User Interface to define these points, and use a scheme script to do this for all points that you need.

But you can probably spend your time better by re-thinking the method that you are using.

February 7, 2017, 16:59	How to obtain the velocity in each point I want	#1
juansc1941 New Member juan esteban Suarez Join Date: Feb 2017 Posts: 5 Rep Power: 9	Hello, I have a simulation already done in fluent, I have de .Dat file of the results of the simulation, however this file shows me the velocity only in the nodes. I really want to have the value of the velocity in every point, not only in the nodes, and export this file as an ASCII file. Do anyone know a way to do this in fluent, cfd-post or tecplot? Thank you

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Velocity of injection point	a_cucen	FLUENT	2	June 13, 2014 09:48
[snappyHexMesh] snappyHexMesh and cyclic boundaries	Ruli	OpenFOAM Meshing & Mesh Conversion	2	December 9, 2013 06:51
a reconstructPar issue	immortality	OpenFOAM Post-Processing	8	June 16, 2013 11:25
I want to the velocity vector for the first node point to the wall. Can I use wallDis	catapult	OpenFOAM Programming & Development	0	January 13, 2012 08:25
Variables Definition in CFX Solver 5.6	R P	CFX	2	October 26, 2004 02:13

February 8, 2017, 07:24		#3
juansc1941 New Member juan esteban Suarez Join Date: Feb 2017 Posts: 5 Rep Power: 9	I define the location of the coordinates, the idea is to obtain the Information in many points that I define, not only the one given in the nodes. This implies that it should be an automatic procedure because there are a lot of points.

February 8, 2017, 08:11		#5
juansc1941 New Member juan esteban Suarez Join Date: Feb 2017 Posts: 5 Rep Power: 9	Thank you that is what I need. However I have 2 questions, I already create the point, but I don´t know how to put the value of the velocity of that point in the table. Do you know a way to generate this points in an automated way?, I mean I need to generate points in all the mesh, that is like 4 Millions of points, so I can´t do it by hand.

February 8, 2017, 08:36		#6
pakk Senior Member Join Date: Nov 2013 Posts: 1,965 Rep Power: 26	In Fluent: File->Export->Solution Data Select ASCII, the things you want and the settings you want.

February 8, 2017, 08:43		#7
juansc1941 New Member juan esteban Suarez Join Date: Feb 2017 Posts: 5 Rep Power: 9	The problem of doing that, is that it only exports the values in the nodes and I want it in other points that I define

February 9, 2017, 06:16		#8
pakk Senior Member Join Date: Nov 2013 Posts: 1,965 Rep Power: 26	If your strategy to solve your problem involves the step of defining 4 million points and extracting information on those 4 million points instead of using the known information on the nodes, you probably have a inefficient strategy. You can do this. Basic steps: find out how to use the Text User Interface to define these points, and use a scheme script to do this for all points that you need. But you can probably spend your time better by re-thinking the method that you are using.