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adding heat flux as a variable

Posted Dec 9, 2021, 6:03 p.m. EST Heat Transfer & Phase Change, Heat Transfer, Parameters, Variables, & Functions Version 5.6 1 Reply

Divya Patel
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hello this is urgent question, i m having trouble defining heat flux in terms of an equation here the eqation is as follows here the l2 i have alredy defined. z is just the z axis changing and q_0 would also be constant. this is for heat tranfers in fluids. for a stionary study

1 Reply Last Post Dec 10, 2021, 4:49 a.m. EST
Magnus Ringh COMSOL Employee

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Posted: 3 years ago Dec 10, 2021, 4:49 a.m. EST

Hi Divya,

This is straightforward in COMSOL Multiphysics. Just type it in as

q_0*(1+2*z/I2)*(1-2*z/I2)

For the expression's unit to be compatible with a heat flux, q_0 should have the SI unit W/m^2 or similar, and I2 should have the SI unit meter or similar.

Best regards,

Magnus

Hi Divya, This is straightforward in COMSOL Multiphysics. Just type it in as `q_0*(1+2*z/I2)*(1-2*z/I2)` For the expression's unit to be compatible with a heat flux, `q_0` should have the SI unit W/m^2 or similar, and `I2` should have the SI unit meter or similar. Best regards, Magnus

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