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Steady state 1D heat transfer boundary condition

6 REPLIES 6
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Message 1 of 7
sabbir19me
732 Views, 6 Replies

Steady state 1D heat transfer boundary condition

It's a hollow cylinder having inner and outer radius a & b respectively.At the inner surface there is a heat source which is generating heat at a rate of 10^5 W/m2.The outer surface is dissipating heat into a fluid(having temp 100C) by convection.Convective heat transfer coefficient is h=400 W/(m2*C).I need to determine inner and outer surfaces temp.Need help applying Convective heat transfer coefficient is h=400 as boundary condition.

 

Thanks,

 

Sabbir

6 REPLIES 6
Message 2 of 7
Jon.Wilde
in reply to: sabbir19me

Hi,

 

It sounds like you need a surface heat flux on the internal surface and a film coefficient on the outer?

Message 3 of 7
sabbir19me
in reply to: Jon.Wilde

Yeah.It's more like it.But if i apply film coefficient on the outer
surface,then what would be the proper value.The surrounding temp is
100C.Thanks for your reply.
Sabbir.
Message 4 of 7
Jon.Wilde
in reply to: sabbir19me

Hi,

 

Looking at your first post, would it not be 400 W/m2/K at 100C?

 

Thanks,

Jon

Message 5 of 7
sabbir19me
in reply to: Jon.Wilde

Hi,

As far as I know,it will be W/(m2*C) or W/(m2*K).

Thanks for your reply.

Sabbir

Message 6 of 7
hs.simanto
in reply to: sabbir19me

Hi Sabbir!!!

You should apply a film co-efficient boundary condition to the outer surface of the cylinder. A heat generation BC in the inner surface of the cylinder. Only then you can measure your required outer surface temperature at steady state or transient state 🙂

Thank You!

Simanto
Message 7 of 7
paul.bunuan
in reply to: hs.simanto

If you know what the total area of the inner cylinder is, couldn't you calculate the total heat generation (i.e., W/m^2 * m^2). There is an option to select total heat generation as a BC.

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