[Goutham cet]

Sir,
I am currently modelling a supersonic (m=3)combustion of hydrogen injected transversely into the flow field.Using a density based solver ,k E turbulence model .p1 and do for radiation .i am using all under relaxation factor 0.1, combustion includes reaction using mechanism.To get good convergence i initiated reaction mechanism after sufficient iteration.

i am getting the value of residual for continuity is of the order of 9.0204 * 10^-3 after 20000 iteration and remains constant .On the other-hand the residual for energy still remains of the order of 1 to 10^-1 .all the values remains same for any number of iteration.

Is this correct ,or what should i do to bring the convergence of both continuity and energy further down.

Note-good grid quality has been chosen.

Thanks in advance for helpers ...please do help...