[seojaho]

Hello,

I have a model with three domains (two solid domains, one fluid domain).
One solid domain is for hot plastic melt. (Actually, this domain should be a fluid domain but hot plastic melt does not move and is just contained into this domain. So set this domain as a solid domain for the hot melt)
The other solid domain is for steel into which the heat from the hot plastic melt is transferred.
The remaining fluid domain is for water as a coolant. So the water cools down the steel domain.
When I finished the simulation, it seems that the heat transfer is not conducted from the melt to the steel because the temp. of the steel is increased just little.
Also, the heat transfer from the steel to water is not successful since the temp. difference between inlet and outlet of water is quite small.

(Addtionally, the simulation type is 'transient' and the heat transfer coefficient of ambient air for natural conection of the steel domain is set to 40 W/m2 K.
The initially given hot melt is cooled down by water's cooling without any additional melt during the simulation time. So, I set the initial temp. (204C) of the provided plastic melt an initial condition for the melt domain. )

Please let me know how to solve this unsuccessful heat transfer problem on solid-solid interface and solid-fluid interface.
Thank you.