Natural convection in front of an aluminium piece

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olivir
Posts: 3
Joined: 10 Oct 2013, 01:24
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Natural convection in front of an aluminium piece

Post by olivir »

Hello Elmer users,

First, excuse my English, I am a french user which is not very good in languages :)

I discovered Elmer totally incidentally (youtube video =O) some days ago. I have a formation in Physics so I was very happy to learn about the existence of this terrific software !

I begin and I try to modelize some air natural convection in front of an aluminium piece but I obtain no movement :(

Someone can help me ?
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olivir
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Joined: 10 Oct 2013, 01:24
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Re: Natural convection in front of an aluminium piece

Post by olivir »

Arf, nobody could help me ?
mzenker
Posts: 1998
Joined: 07 Dec 2009, 11:49
Location: Germany

Re: Natural convection in front of an aluminium piece

Post by mzenker »

Hi,

I cannot help you directly, since I have never done fluidics with Elmer. But there is a tutorial "Transient flow and heat equations –
Rayleigh-Benard instability" where natural convection is used. There are also three natural convection examples in $ELMER_HOME\tests. By studying them you might find a solution to your problem.

HTH,

Matthias
olivir
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Re: Natural convection in front of an aluminium piece

Post by olivir »

In fact, I relied on this tutorial :(
mzenker
Posts: 1998
Joined: 07 Dec 2009, 11:49
Location: Germany

Re: Natural convection in front of an aluminium piece

Post by mzenker »

Hi,
olivir wrote:In fact, I relied on this tutorial :(
So you try to reproduce the tutorial and it doesn't work?

As I said,
mzenker wrote:There are also three natural convection examples in $ELMER_HOME\tests.
You can study those and try to run them.

If that doesn't advance you, I hope that someone else can help you. I can't, sorry.


Matthias
Ale-X
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Joined: 13 Nov 2016, 02:23
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Re: Natural convection in front of an aluminium piece

Post by Ale-X »

I found this example.. and looks as a convective example really pretty acurate...
http://dymaxionkim.blogspot.com.ar/2015 ... elmer.html
hope it helps someone as it helped me.
Regards
Ale-x
kevinarden
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Re: Natural convection in front of an aluminium piece

Post by kevinarden »

.05 x 1 aluminum plate hot on the left side, .20 air on the right side, boundary wall on the right. Heat conducts through the plate heating the air causing a vertical air flow due to buoyancy, heat convection into the air. Initial condition 293K, Hot side 323K, 0 Velocity.
Steady State
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Transient Time = 1.0
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