Can you help me understand Heat Source and Volumetric Heat Source applied to an example?

General discussion about Elmer
Post Reply
ScientistRenzo
Posts: 55
Joined: 14 Mar 2021, 21:01
Antispam: Yes

Can you help me understand Heat Source and Volumetric Heat Source applied to an example?

Post by ScientistRenzo »

Hello :D!!!!!

Can you help me understand Heat Source and Volumetric Heat Source applied to an example?

Lets say the model has 4 bodies
(body 1 = 1 kg, body 2 = 2 kg, body 3 = 3 kg, body 4 = 4 kg: to make this example simple and treat the interest well)

I apply to all body
Heat Source = 10 (W/kg) for 1 second. (1)

I apply in another test to all body
Volumetric Heat Source = 10 (W/m³) for 1 second. (2)

The ParaView of temperature may look like these side-by-side: https://imgur.com/a/DHbiB2s

So what have I done in 1 and 2?
My guess is that in (1), I have applied 10 J times the weight in kg of body X to body X.
in (2), I have applied 10 J times the volume in m³ of body X to body X.

Thanks!! :D
raback
Site Admin
Posts: 4173
Joined: 22 Aug 2009, 11:57
Antispam: Yes
Location: Espoo, Finland
Contact:

Re: Can you help me understand Heat Source and Volumetric Heat Source applied to an example?

Post by raback »

Hi

"Heat Source" is heating per unit mass while "Volumetric Heat Source" is heating per unit volume. The 1st one was implemented historically and the 2nd one was added as people often like to give the heat source per volume.

-Peter
Post Reply