The Center for Predictive Engineering and COmputational Sciences (PECOS) is a DOE-funded Center of Excellence within the Oden Institute for Computational Engineering and Sciences at The University of Texas at Austin. PECOS is one of five such centers sponsored under the Predictive Science Academic Alliance Program (PSAAP) of the National Nuclear Security Administration's Advanced Simulation and Computing Program.
PECOS brings together an interdisciplinary, multi-university team with partners at the DOE National Labs and NASA. The goal of the PECOS Center is to develop the next generation of advanced computational methods for predictive simulation of multiscale, multiphysics phenomena, and to apply these methods to the analysis of vehicles reentering the atmosphere. In pursuing this research, PECOS is advancing the science and modeling of atmospheric reentry, and the science of predictive simulation.
Simulation of vehicle reentry into the atmosphere is a challenging problem involving many complex physical phenomena; such as, aerothermochemistry, thermal radiation, turbulence and the response of complex materials to extreme conditions. These arise from the interaction of extremely high temperature gas flows with the vehicle's thermal protection system.
Reliable predictions of such complex physical systems requires sophisticated mathematical models of the physical phenomena involved. But also required is a systematic, comprehensive treatment of the calibration and validation of the models, as well as the quantification of the uncertainties inherent in such models. Development of such tools, along with the required mathematical models, is the primary mission of the PECOS Center.
The PECOS Center research program will result in fundamental advances in both predictive science and the science of reentry vehicles.