Marco, The constraints you mentioned may limit you when simulating transient effects. As an example, we have simulated the ultrasound wave propagation, and this required of about 1M nodes. However, 50K can be sufficient for simple simulations of static effects. Regards Darius -----Original Message----- From: mems-talk-bounces@memsnet.org [mailto:mems-talk-bounces@memsnet.org] On Behalf Of Marco Iacovacci Sent: Wednesday, May 02, 2007 10:29 PM To: mems-talk@memsnet.org Subject: [mems-talk] ansys multiphysics Dear members, I work in a government research facility in Brazil and am on the verge of acquiring the Ansys Multiphysics software package. Due to budgetary conditions we can afford an option that restricts usage from 50K nodes for structural, thermal and acoustic simulation to 128K nodes for CFD simulation. Can someone inform me if this configuration is enough for MEMS and microfluidics applications?