Trelis is a high-end, commercial-grade pre-processor for complex FEA and CFD simulation. It is based on the time-proven CUBIT™ software from Sandia National Laboratories. For more than two decades, csimsoft and Sandia have co-developed CUBIT to do Sandia's really challenging simulation. Now, commercial and academic users can use the tool for their tough simulation problems. Because CFD and FEA needs are different, csimsoft offers three Trelis versions: