thank you, Rob,

do you mean I should try to run the model with the default values just adjusting the bins?? if yes then I did every possible way, I tried several times with default values different turbulence models, etc. In the end, I can adjust the convergence only like on default values I had a divergence detected in epsilon then I adjusted the epsilon under relaxation factor and the problem was gone after that at 250 time steps by having 30 mas iterations per time steps and 9.8e-7 time step size my system got converged but the number density value was far low as compared to the experimental value... similarly tried k omega etc i am now able to get the convergence but nit the accuracy one more thing may i know the max value of the number density that is acheieved in the fluent?

thnak you