October 8, 2023 at 9:44 pmwtz0316Subscriber
I am currently building up a model to simulate the melt flow in a weld pool of aluminum additive manufacturing. I applied a moving heat source via UDF and got some preliminary results. However, the phase and solid fraction don't match with each other. Have anyone encountered into similar issues before?
Results are attached below:
Liquid fraction of aluminum phase:
Aluminum phase fraction:
The contour of aluminum phase and liquid fraction of aluminum phase do not match with each other at all.
Any comments and suggestions are appreciated!
October 9, 2023 at 10:07 amRobForum Moderator
Can you double check you're looking at the same view? Or did you crop the image?
October 9, 2023 at 5:26 pmwtz0316Subscriber
Thank you for your reply. Yes,I am pretty sure it's the same view applied by different countors. Yes, I cropped the image but it's the same view.
October 10, 2023 at 8:52 amRobForum Moderator
OK. Can you check the VOF for 0.01 to 0.1? I'm wondering if you've got a tiny amount of diffusion, and the liquid fraction is then 100% of that.
October 10, 2023 at 4:59 pm
October 11, 2023 at 8:37 amRobForum Moderator
That should be fine. Anything with VOF 0 to 0.001 ?
October 11, 2023 at 2:26 pm
October 11, 2023 at 3:18 pmRobForum Moderator
And some movement in the free surface. You only need 1e-4 volume fraction of molten material to have a liquid fraction of 1.
October 11, 2023 at 7:59 pmwtz0316Subscriber
Thank you for your help! I think that's probably the reason.
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