Transient CFD- and Model Order Reduction-Based Solver for Rapid Thermal Signature Prediction

The goal of the project is to develop and demonstrate an integrated, transient CFD and model order reduction (MOR)-based solver that can be directly integrated into a thermal signature solver. In Phase I, key technology elements of the hybrid simulation methodology, including the turbulent-thermal full order model (FOM), incremental proper orthogonal decomposition (iPOD), reduced order model (ROM), and model switch decision maker were developed in a modular software environment. By way of extensive case studies of Army relevance, critical evidence of our technology was established and excellent computational performance (relative error <0.35%, absolute error <4K and acceleration up to 40x) was demonstrated. In Phase II, equation-based ROMs will be optimized in performance and functionality, and extended to turbulent flow. Data-driven ROMs will be developed to enable non-intrusive integration with the third-party CFD and signature analysis tools being used in CCDC GVSC (formerly TARDEC). The CFD-ROM solution will be thoroughly investigated for thermal signature generation. Software architecture and implementation will be refined for enhanced automation and efficiency. The technology will be inserted into GVSC designated workflow for rapid transient flow and thermal simulation and signature prediction. The tool will be extensively validated and demonstrated via selected case studies of Army interest.