Temperature gradient along wall
 

Hi,

What is the most straightforward way to set a temperature boundary condition for a wall, in which the temperature is a (linear) function of the distance in 1 direction? I would like to model a tube, in which the temperature is constant and gradually increases from T1 to T2 along its length.

Are groovyBC or swak4Foam needed to achieve this? If so, can someone post a simple example?

Thanks and best regards,

Radko

GroovyBC or swak4Foam are indeed easy tools to achieve this. Examples can be found on the wiki.