Learning Forum

[Raj007]

Hello all,

I am working in Ansys fleunt. In my model, I have a wall that has 4000 points or nodes of the mesh. I would like to give temperature only for some mesh coordinates for the wall (say around113 nodes) for my model. But, as I am giving temperature to some nodes, Ansys fluent showing an error (which can be seen in the image).

But, if I give temperature to all points or nodes. Ansys is taking it as a forced boundary condition, which is not at all acceptable. So, I would like to take suggestions like is there any option in Fluent or any other approach for limiting the temperature to some nodes and other nodes that can show temperature variation. Please let me know if you need any other information.

Thank you

Raj

Capture.PNG

[aitor.amatriain]

Next time please attach the screenshot as a figure (as shown below), not at as attached document (which cannot be downloaded by ANSYS employees)
In regards to your problem, could you post a screenshot of the profile?

[Raj007]

Hello Aitor Do you mean the profile text data or the geometry?

[aitor.amatriain]

Text data

[Raj007]

It has 4000 points and for three coordinates+one boundary condition, it is 16000 values. I cannot post them as a screenshot.

[aitor.amatriain]

I am not able to help you without more details

[Raj007]

[Raj007]

[Raj007]

As the data is taking around 100 screenshots. I have posted 10% of the total data, which has a change in the boundary condition. I hope it helps with my solution.

[Amine Ben Hadj Ali]

You can try using CSV format instead of the legacy format so that you do not need to add the brackets (looks wrong for your case). Just be aware about the header for CSV you need to change it. The User's Guide has an example for that :)

[Raj007]

I'm afraid you are looking into the wrong issue. The format is fine. The issue is not in the format. Let me explain my problem again, I want to define the boundary condition to the limited space of the wall and the surrounding control points of the wall should be varied according to the temperature I have given. Let us consider the wall into multiple surfaces or control points Eg x1, x2,...,x4000. I would like to specify temperature to only some points as shown in the below screenshot, where the profile which is read has 300k in all control points but I have given some of them as 700k, and the rest of them must be varied according to the given temperature like for example surrounding temperature on the wall should be 640k, 620k,630.1k,....so on
But, the rest of the control points are fixed as 300k. It might be because I have mentioned them as 300k. So this time to avoid this problem as a fixed temperature, I have uploaded to profile data only the locations of control points and values of the temperature which I wanted to be changed, but now, I am facing the following error (Look into the below screenshot). Please excuse me if my presentation skills are bad.
Thank you
Raj

[Rob]

The profile will interpolate to the remainder of the surface so you need to split the surface to regions you want to set or use a UDF. The error means you need to check the header part of the profile: you've told the solver there are 4,000 points but you then only have 113.

[Amine Ben Hadj Ali]

Definitely something wrong with the profile file.