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Thermal Convection

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Author: s_noonan

Group: Technical

Filesize: 45.53 kB

Date added: 2014-01-12

Rating: 6

Downloads: 1090

Views: 411

Comments: 4

Ratings: 3

Times favored: 0

Made with: Algodoo v2.1.0

Tags:
heat

Scene tag
This scene shows convection cooling of metal cross sections of different shapes. This scene uses the Lumped capacitance model. The rate of cooling is dependent on the surfaceLength/area ratio (surfaceArea/volume in 3D). The plot in the drawing is for the finned cross-section. Use the up and down arrows to change the air temperature. Add or subtract material to the blob on the right to change its time constant.
Last edited at 2016/07/02 20:40:07 by s_noonan
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Xray
2014/01/12 02:33:57
This is very interesting and educational.

About 20 years ago I worked on a project with another engineer who was designing a switch-mode power supply for a medical instrument. We were discussing the cooling requirements of the power semiconductors when he said to me, "This heat sink has a very low thermal impedance". That was the first time I had heard anyone refer to a mechanical component with terms normally associated with electrical devices. But from that point on, a light bulb lit up in my brain, and I understood exactly what he meant. Now I visualize the thermal conduction of an object as having low or high impedance. And now I also understand that the shape of an object has a major influence on how quickly it conducts heat.

Excellent demo! :tup:
Gent
2014/01/12 12:12:27
COOL lol
s_noonan
2014/01/12 13:24:55
Thanks guys.
Luezma
2014/02/21 02:21:13
Wow, good sim! :tup: