[Natural CONVECTION IN OPEN SYSTEM]

hond02pvu · December 18, 2018, 10:09

Dear all,

I simulate natural convection in an open system and described in the picture. The result that I got seems to not be correct since from experiment there should be air flow from the inlet and discharge at the outlet as buoyancy force strongly occurs. I also attached the result of the velocity field.

I would like to ask for your opinion whether something wrong with my model?
Thank you.

LuckyTran · December 18, 2018, 21:38

You set a velocity inlet with 0 m/s so air cannot flow in......

hond02pvu · December 18, 2018, 23:34

Quote:

Originally Posted by LuckyTran

You set a velocity inlet with 0 m/s so air cannot flow in......

I have changed the inlet-velocity to inlet-pressure. As a result, I've got the flow in and out. A new problem has come up the highest temperature on the heated wall is around 900K which is still much higher than expected ( heat flux 2000W/m^2). What do you think? Thank you!

December 18, 2018, 10:09	[Natural CONVECTION IN OPEN SYSTEM]	#1
hond02pvu New Member NGUYEN DONG HO Join Date: Dec 2018 Posts: 2 Rep Power: 0	Dear all, I simulate natural convection in an open system and described in the picture. The result that I got seems to not be correct since from experiment there should be air flow from the inlet and discharge at the outlet as buoyancy force strongly occurs. I also attached the result of the velocity field. I would like to ask for your opinion whether something wrong with my model? Thank you. Last edited by hond02pvu; December 19, 2018 at 14:22.

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December 18, 2018, 21:38		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,676 Rep Power: 66	You set a velocity inlet with 0 m/s so air cannot flow in......