topic Re: visualize the temperature in CFD Forum

visualize the temperature

MichaelSpahn — Tue, 28 Jul 2020 12:29:23 GMT

Hello, community,

I would like to visualize the temperature at the inlet and on a person with my model. Can someone please help me with this?

Thanks 🙂

Re: visualize the temperature

frederic.gaillard.7 — Tue, 28 Jul 2020 12:44:47 GMT

Hello again Mike,

The easiest way to have a appréciation of the thermal solution of your design is the following :

1. Develop your flow until the convergence is reached

2. Turn off Flow Solution in solver tab

3. Turn on Thermal Solution in the same solver tab

4. Apply the Thermal Boundary BC on the appropriate surfaces

5. Start your simulation

This way of proceeding the flow will be fixed in time, and the heat will propagate according to the velocity vectorial fields.

Other important thing :

A normal humain generate between 100W-120W
We talk about internal boundary condition last time, but there's exception and it's called volumetric boundary condition (Total Heat Generation)

Try this in the first place and let know how it works for you 🙂
Fred

Re: visualize the temperature

MichaelSpahn — Wed, 29 Jul 2020 07:26:24 GMT

Hello, Fred,

does CFD recognize the heat of people by the materials or do I have to set this explicitly? When I start my visualization I get the value 20 C
(this one I have indicated at the inlet with temperature BC)

Re: visualize the temperature

frederic.gaillard.7 — Wed, 29 Jul 2020 16:47:51 GMT

Hallo Michael,

No ! Humain material only have thermal propreties like conductivity(x,y,z) heat capacity , and emissivity.

Temperature, Internal Heat Generation, Heat flux, or film coefficiant must be setted indicidually through the ThermalBoundaryCondition.

If you impose a surface BC to the human model, the model must be suppressed from the mesh.

If you impose a volumetric BC to the human model, the model need to be meshed.

Hope it helps
Fred

Re: visualize the temperature

CGBenner — Mon, 03 Aug 2020 17:37:43 GMT

@MichaelSpahn Did the information provided by @frederic.gaillard.7 answer your question? If so, would you please use Accept Solution so that others may find this in the future? Thank you very much!

Re: visualize the temperature

frederic.gaillard.7 — Mon, 03 Aug 2020 17:39:53 GMT

Hello Chris,

there's still work to do on this particular model.

We will close the thread once it will be done.

Thanks

Fred