Bionico
Guest
Hello.
I'm analyzing a circuit of a flat burner for condensing boiler: at the exit from the burner the simulation gave me this error: "reversed flow on xxxx faces outflow"
as suggested on online cfd I extended the domain and I put 1 meter pipeline to allow the flow to stabilize (the heat exchanger has the side of 140 mm, so they are about 7 hydraulic diameters away) but continues to manifest the same notice (which gives accuracy problems on residuals, they do not even arrive e-03!! ! )
I also tried to change the boundary out with a pressure outlet (even if I would prefer outflow because the pressure I don't know it exactly) but nothing to do.. .
Now I try to stretch the conduit again but it seems really strange that the flow after 1 meter still anticipates recirculations! ! ! !
Any advice?
I'm analyzing a circuit of a flat burner for condensing boiler: at the exit from the burner the simulation gave me this error: "reversed flow on xxxx faces outflow"
as suggested on online cfd I extended the domain and I put 1 meter pipeline to allow the flow to stabilize (the heat exchanger has the side of 140 mm, so they are about 7 hydraulic diameters away) but continues to manifest the same notice (which gives accuracy problems on residuals, they do not even arrive e-03!! ! )
I also tried to change the boundary out with a pressure outlet (even if I would prefer outflow because the pressure I don't know it exactly) but nothing to do.. .
Now I try to stretch the conduit again but it seems really strange that the flow after 1 meter still anticipates recirculations! ! ! !
Any advice?