[lilas]

Hello All,

I am trying to simulate a powder bed fusion using a moving Gaussian heat source. For a trial simulation, I defined 2 fluids: air and metal. I constructed a block region and put some spherical particles on top of it, and patched them with a volume fraction of 1 for metal indicating that it is the secondary phase. Solidification and melting were turned on and the heat source was applied using a UDF. Although the temperatures are high enough to melt the solid, and the liquid fractions indicate that the solid is melted, the VOF interface remains the same and as a result, the metal does not flow as seen in the literature. Any idea what could go wrong? Surface tension and gravity have been included while the effects of radiation have been excluded for now. Thanks in advance!!

[KaWen]

Originally Posted by lilas

Hello All,

I am trying to simulate a powder bed fusion using a moving Gaussian heat source. For a trial simulation, I defined 2 fluids: air and metal. I constructed a block region and put some spherical particles on top of it, and patched them with a volume fraction of 1 for metal indicating that it is the secondary phase. Solidification and melting were turned on and the heat source was applied using a UDF. Although the temperatures are high enough to melt the solid, and the liquid fractions indicate that the solid is melted, the VOF interface remains the same and as a result, the metal does not flow as seen in the literature. Any idea what could go wrong? Surface tension and gravity have been included while the effects of radiation have been excluded for now. Thanks in advance!!

Hello, it seems that the time advantage is late, it is very presumptuous to ask if you solved the problem?
THANKS.