
#1
Jun2911, 07:52 AM

P: 29

When I read some heat transfer book, I got a problem.
There are some numerical calculation methods in dynamic heat conducting in tube wall, but all the methods assume the temperature on one side of the tube and then calculate the temperature distributed in the wall. But are there some methods assume that temperature on inner/outer sides both changes and then calculate the temperature in the wall ???? 



#2
Jun2911, 08:01 AM

Admin
P: 21,637

Normally in calculating temperature through a wall, on starts at the boundary condition and works toward the hottest temperature or axis/plane of symmetry. Many systems are designed for steadystate, while others may be subject to slow timevarying boundary conditions. In offnormal conditions, the boundary condition may change rapidly with time. Simulating transients, particularly rapid transients, requires finer time steps (and usually explicit (dynamic) vs implicit (static/quasistatic) numercial solutions). It is also an art. 



#3
Jun2911, 08:16 AM

P: 29





#4
Jul412, 10:13 AM

P: 2

The dynamic heat transfer in tube wall
shouldn't this be done by using integration???




#5
Jul412, 10:13 PM

P: 29

Yes, finer time step and interation




#6
Jul512, 12:43 AM

P: 2

do you have the formula?



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