## Fluids

Topics relate to Fluent, CFX, Turbogrid and more

#### How to perform transient thermal analysis and fluent analysis at the same time

• Chan Hyung Ryu
Subscriber

Hello I am a student in Korea.

Various experiments using laser are in progress.

The condition of irradiating the laser to the object was carried out through transient thermal analysis + moving heat source.

The next stage of analysis and experimentation is to raise the temperature of a specific space to a certain temperature and then irradiate the laser.

I'm wondering how to interpret this via Ansys.

The picture below can be easily explained.

The small rectangle above is a hole for laser irradiation.

We will raise the temperature inside the room using two heat sources.

At this time, the heater is not an air heater that specifically changes the flow of air.

A simple space heater.

Please tell me if there is anything wrong

I'm still studying Fluent, but I'd like help because it's my first time in fluid analysis.

Ansys tutorial is also being performed, but it would be useful if there are any lectures or materials you can recommend.

• Rob
Ansys Employee

We've got thermal radiation models in Fluent. For this I suspect DO or Monte Carlo are best, maybe S2S (the Users Manual & Theory Guide will help explain). Are you looking at thermal stress in the plate or just temperature?

Similarly, if the room temperature & heat transfer coefficients are nominally constant then Thermal (Mechanical) may be sufficient.

• Chan Hyung Ryu
Subscriber

Currently, we are only checking the temperature. Just one thought, is there any way to set the heat radiation condition inside the transient? And you think DO or Monte Carlo is the best and you say S2S, can I get a link to user manual and theory guide??

• Chan Hyung Ryu
Subscriber

• Rob
Ansys Employee

Click on Help for the documentation. In Fluent we'd model the flow too. I have no idea about Thermal's models as I don't use Mechanical.