Learning Forum

[jonheb]

I have run a simulation of fluid flow through a rectangular channel, there is a heat flux boundary condition applied to the simulation.
I measure the wall by two methods
i) in fluent draw a line across the wall where the heat flux boundary is applied, I use surface integrals, area weighted average, temp, wall temp.
ii)in CFD post again same method of drawing a line, line ave, adjacent wall temp

Problem is both results are different. How do I know which is correct? I’m trying to calculate Nusselt number

[Vishal Ganore]

Not sure why do you need to draw a line to measure temp at wall. If you define/name that wall in preprocessor (meshing), Fluent will take that wall as a wall BC so that you can compute temperature on the wall directly.