hi

i am doing analysis on centrifugal blower. while solving with higher mass flow rates the solution is converged in CFX, but if i am solving for low mass flow rates for the same model at same speed the analysis is not converging. it is oscillating. i want to give artificial viscosity for getting converged results. is it correct? and how can we give artificial viscosity in CFX?plssssssssss reply sooooooooon if u have idea...

Thnks & Regards

Maybe your blower is stalling. In this case, you may need to reduce your timestep or maybe a you need to do a transient analysis.

i have reduced time step even though it is not converging.How can i start to do transient analysis? How can i calculate the total time duration? how can i check for converging? please anybody give reply soon.

Thanks &regards