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convection with phase change
Posted Apr 16, 2017, 5:39 a.m. EDT 3 Replies
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Hey there,
I am trying to make a simulation of a melting process of a square of Parrafin 0.1m*0.1m fixed temperature of 1941K to the left wall and 1687 K (melting point of Parrafin) to the right wall. The material starts as a solid, so there would be conduction but then as it melts there should be convection in the liquid phase.
I was using the physics heat transfer in fluids (ht) and Laminar Flow (spf), whether it is correct? or I have to used another module.
Why laminar flow doesn't converge no matter what ?
Could someone please point out how I can resolve this issue?
Many thanks
Nesrine
I am trying to make a simulation of a melting process of a square of Parrafin 0.1m*0.1m fixed temperature of 1941K to the left wall and 1687 K (melting point of Parrafin) to the right wall. The material starts as a solid, so there would be conduction but then as it melts there should be convection in the liquid phase.
I was using the physics heat transfer in fluids (ht) and Laminar Flow (spf), whether it is correct? or I have to used another module.
Why laminar flow doesn't converge no matter what ?
Could someone please point out how I can resolve this issue?
Many thanks
Nesrine
3 Replies Last Post Apr 17, 2017, 3:04 p.m. EDT
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Posted:
7 years ago
Hey there,
I am trying to make a simulation of a melting process of a square of Octadecane 0.1m*0.1m fixed temperature of 313K to the left wall and 303 (melting point of Octadecane) to the right wall. The material starts as a solid, so there would be conduction but then as it melts there should be convection in the liquid phase.
I was using the physics heat transfer in fluids (ht) and Laminar Flow (spf), whether it is correct? or I have to used another module.
Why laminar flow doesn't converge no matter what ?
Could someone please point out how I can resolve this issue?
Many thanks
Nesrine
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Posted:
7 years ago
Nesrine
See this example. It is almost similar to what you are going to do.
www.comsol.com/model/tin-melting-front-6234
Amin,
See this example. It is almost similar to what you are going to do.
www.comsol.com/model/tin-melting-front-6234
Amin,
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Posted:
7 years ago
Hi Mohamed,
think you i have seen your example, but my PCM starts as a solid and in yours the PCM is separated by layer (at t=0 there is two phases: solid+liquid)
unfortunately your example doesn't work with case
Can someone help me??
Lots of thanks!
think you i have seen your example, but my PCM starts as a solid and in yours the PCM is separated by layer (at t=0 there is two phases: solid+liquid)
unfortunately your example doesn't work with case
Can someone help me??
Lots of thanks!