Multi-Fidelity Surrogate Modeling for Computational and Experimental Data Consolidation

The goal of the project is to develop a mathematically rigorous, multi-fidelity surrogate modeling (MFSM) methodology to consolidate experimental and computational aerodynamic data into integrated databases with quantifiable uncertainty. The salient aspects of the proposed solution are: (1) a hierarchical MFSM formulation to encapsulate local response surface modeling, model adaptation/fusion, interpolation/blending, and uncertainty quantification onto a holistic platform; (2) a suite of surrogate modeling techniques to capture the local aerodynamic behavior around the operating points; (3) formal adaptation/fusion techniques to bridge the gap of fidelity and merge data from multiple sources; (4) a global data interpolation strategy to stitch the local models for accurate prediction in a broad flight parameter space; and (5) a modular software framework to automate the process and facilitate integration with NASA’s data analysis workflow. In Phase I, all key components will be designed and developed. Feasibility will be demonstrated via case studies of NASA interest, in which computational, wind tunnel, and flight test data will be analyzed and merged using the developed software and its performance (e.g., accuracy, reliability, data compatibility, and integrability) will be assessed. The Phase II effort will focus on capability extension, algorithm optimization, technology integration/insertion, and extensive validation and demonstration.