#### nomee

##### Newbie level 3

**Convergence in HFSS.**

Hello,

I have been using CST MWS for the simulations of Infinite Reflectarrays and now I have started using Ansoft HFSS comparisons or validation of my results.

Can anyone help me in understanding WHat exactly is convergence?

Also my total tetrahedra goes beyond 90k on 10 passes and when i set my deltaS=0.001, after 15 passes my system goes out of memory.(Although i have 12G ,Quad core System).

Can anyone please tell the possible reason for this?