Partition to reduce heat transfered with natural convection

Panagiotis Artemiou · Jan 3, 2021

Hi all.
I have a problem where i have to find the best hight to put a partition so that i can reduce the air flow caused by natural convection inbetween two surfaces

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It has something to do with the Rayleigh number , like i need to make it as small as possible. Also there is still heat transfered with conduction.
For example when the partition goes up the upper section has a smaller Rayleigh number but heat with conduction is transfered easier whereas the down section haw a higher Rayleigh number but heat with conduction is transfered more difficult because of the longer distance.
Any ideas woyld be really usefull
Thank you!!

IRstuff · Jan 3, 2021

The objective in prevent convection is to prevent the circulation; that requires vertical walls that are no more than 13 mm in separation, so possibly some sort of honeycomb

Another option, if the top and bottom separation is small is to put layers of bubble wrap in the space.

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Panagiotis Artemiou · Jan 4, 2021

yeah you are right for an actual application, but hear i have a theoritical problem where i need to find the best hight to put the partition so that the air flow will be minimized. It is more of a mathematics problem but thank you anyways!!!

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Partition to reduce heat transfered with natural convection

Panagiotis Artemiou

Student

IRstuff

Aerospace

Panagiotis Artemiou

Student

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