Sensitivity to model parameters and roughness in finite-rate reacting hypersonic flows
Abstract
Computational techniques for the simulation of high-speed flows have outpaced the tools to analyzeflowfields they generate. This is even more true for flows that rely on a significant amount ofmodeling assumptions, such as flows at conditions where non-equilibrium and finite-rate aerothermochemistry effects play a significant role. We propose the development and application of a computational framework for the analysis of fluid systems using adjoint techniques and gradient/sensitivity information. This information will be extracted directly and efficiently from a nonlinear simulation code, with minimal intrusion and involvement of the user. Information gained in this manner wil be used, as a start, to analyze large-scale fluid systems as to their sensitivity to model assumptions and geometric modifications on the boundary. The same framework is, however, also applicable to input-output analyses, susceptibility analysis and to control efforts. In our application, we will in particular concentrate on the design of improved models, the reduction of large-scale motion and the influence of roughness on integral output quantities of interest.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 09, 2018
- Source ID
- FA95501810127
Entities
People
- Peter J. Schmid
Organizations
- Air Force Office of Scientific Research
- Imperial College London
- United States Air Force