Re: Flux calculation in Simple diffusion does not work!
Posted: 12 Jun 2018, 15:48
Thank you very much again Matthias,
You are right, the only real issue still remaining is the convective flux.
The value of the convective flux looks like the program is computing the surface area (0.005 m x 1 m) by the concentration (0.1 Kg/m3) and a velocity of 1 m/s instead of 0 (this gives the 5e-4 reported by Elmer). For some reason the program does not use the zero velocity.
I'll wait for Peter to report on that, but if I have the time, I'll look at the fortran program.
thanks again!
jordi
You are right, the only real issue still remaining is the convective flux.
The value of the convective flux looks like the program is computing the surface area (0.005 m x 1 m) by the concentration (0.1 Kg/m3) and a velocity of 1 m/s instead of 0 (this gives the 5e-4 reported by Elmer). For some reason the program does not use the zero velocity.
I'll wait for Peter to report on that, but if I have the time, I'll look at the fortran program.
thanks again!
jordi