autodesk cfd – smoke in temperature

[albertot]

Good morning to all,

after a lifetime - almost four years - return to the forum actively, moving from sheet to cfd analysis confused
as object, I am slowly immersing myself in autodesk cfd, as an analysis tool, and I would like to know how to manage the variable "temperature" in the analyses.
I'm going to explain: since analysis is aimed at high temperature fumes, I would like to know how to set this value to have a reliable result; Referring to the help is not a nice answer

thanks in advance,

 

[Vmax]

the rule temperature is an dependent variable, the complicated thing is always the setting of the boundary conditions that determine the incoming/output thermal flows according to the different transmission modes.
therefore the first step is to create an appropriate physical-mathematic scheme of the problem.
the smartest thing is to check what are the possibilities offered by the sw in terms of boundary conditions to implement them in the physical-mathematic model as much as possible.
the accuracy of the results depends fundamentally on the "parameter of ignorance", that is how bad you know the boundary conditions. for moving fluids there is another problem related to the approximation of convective flows that are always quite relevant. in any case if the model is well set you should be able to obtain useful information to make sensible comparisons.

 

[albertot]

Hi, vmax.

thanks to the answer; Actually, instead of sticking the pc with the knife between the teeth, spending a few minutes in front of the coffee machine helps to better set the analysis!
Basically, I have a gas flow in my machine, I will apply (in some way I will discover) the heat exchange of the machine, I expect an output temperature that I verify with cfd; in what concerns the flows within the machine... One step at a time! !

See you soon!