Abstract
We utilize stochastically-forced compressible linearized Navier-Stokes equations to study the dynamics of hypersonic flows over blunt bodies. Our analysis of the energy of the flow fluctuations around the laminar stagnated flow reveals strong amplification of specific streamwise and spanwise length scales. We also provide insights into how changes in different physical parameters, such as the temperature of the blunt body and its curvature, influence the amplification of flow fluctuations. We show that increasing the bluntness and decreasing the wall temperature can significantly enhance the amplification of flow fluctuations. Our approach offers a systematic control-theoretic framework for quantifying the influence of stochastic excitation sources (e.g., free-stream turbulence and surface roughness) that are unavoidable in experiments and paves the way for the development of control-oriented models of hypersonic flows over blunt bodies.
| Original language | English (US) |
|---|---|
| Title of host publication | 2023 American Control Conference, ACC 2023 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 1596-1601 |
| Number of pages | 6 |
| ISBN (Electronic) | 9798350328066 |
| DOIs | |
| State | Published - 2023 |
| Externally published | Yes |
| Event | 2023 American Control Conference, ACC 2023 - San Diego, United States Duration: May 31 2023 → Jun 2 2023 |
Publication series
| Name | Proceedings of the American Control Conference |
|---|---|
| Volume | 2023-May |
| ISSN (Print) | 0743-1619 |
Conference
| Conference | 2023 American Control Conference, ACC 2023 |
|---|---|
| Country/Territory | United States |
| City | San Diego |
| Period | 5/31/23 → 6/2/23 |
Bibliographical note
Publisher Copyright:© 2023 American Automatic Control Council.