RCS simulation in FEKO with Large Element Object

Marcus Chang

Dear Support Team,

 

Recently we had an easy exercise of RCS simulation in FEKO with large element object.

Due to the size of the file is exceed 48.83MB, so please check below link:

https://drive.google.com/file/d/1oee6-vL0pyZJTeJ-w8NQA7ZYRi1ycWM6/view?usp=sharing

 

There is two problems that:

 

First, if you use this file to run simulation, 'the triangular mesh overlap...' error message will show up in the end.

Then I try to union these separated dielectric objects to an object and exported to a new .stp file then import it again to replace original object.

The first problem is solved, but there is a second problem occurs, out of memory by using our workstation with 256 GB RAM.

And also I have try the other method, such as replacing the free space region between two objects in the file by using a dielectric constant equal to 1 with FEM solver, and modify the mesh quality to FAST, refinement factor to coarse ,minimum element size to medium in 'Create mesh', but it seemed not better than before.

 

Please help us check what's happening to our simulation file, and provide us some guidelines if we face this kind of problem next time.

 

Thanks a lot.

 

BR/Marcus

 

Mel

Hi Marcus

 

With the default solver, MoM, the model is not solvable - 3292 TByte is required.

You can activate MLFMM, but still you would need around 4 TByte.

 

The model is electrically very large, and RL-GO is suitable too. Attached is the model containing the RL-GO settings.

 

 

Unable to find an attachment - read this blog

Marcus Chang

Dear Mel,

 

Thanks for your help, it works now!

 

BR/Marcus