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ripong October 28, 2011 13:48

Fluent- how to plot axial velocity
I have a geometry of bent cylinders. Do you know how to show contours (or any kinds of plot) of axial velocity? Here axial velocity means the velocity along the cylindrical axis, which is a curve made of straight lines and arcs. :confused:

1988 August 4, 2014 13:08

hi ripong
I have the same problem and I could not find the answer
I know you have post it long time ago but if it is possible please help me to find the answer

nasir.iitd August 6, 2014 09:56

dear Ali reza and ripong,
To plot axial velocity, you need to define a diametrical line( surface>line/rake>define line). The in the xy plot you can see your defined line under surfaces and you can plot your required velocity profile on this line.
Is it helpful?

1988 August 7, 2014 01:52

1 Attachment(s)
hi and thanks for your attention
but I did not mean that, I want to plot an axial velocity contour in different sections in the geometry which is non planar.
as you can see in this picture ,there are different sections which are not along an specific axis and I don't know how to plot an axial velocity contours.
axial velocity tab in fluent is not work here because this geometry is not planar and is not along x,y,z axis.
is there any idea?

nasir.iitd August 7, 2014 04:24

Dear friends,
In case of non planer, at any defined cross section you can try with the following command plot>car in the iteration panel(car=circumferential averaging radially).There you have to specify number of points distributed radially. save this data file and load it in xy plot panel. Is it helpful?

1988 August 7, 2014 05:59

thanks Nasir
but could you please explain how can I make axial contours in the geometry which I have sent before.

nasir.iitd August 7, 2014 11:55

Do you mean that contour plot along the diametrical plane of your pipe? If so then taking diametrical length( in your fig. length from point 4 to the outlet of the pipe)define a plane for an axial length from inlet to outlet.By doing this on a wide plane you can get contour plot of the flow. you can try with this.

1988 August 8, 2014 07:02

thanks alot but I did not get what I have to do exactly.could you please explain more.

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