Multi-fidelity wing optimization utilizing 2D-to-3D mapping in transonic conditions
Abstract/Contents
- Abstract
- Due to time and resource constraints, the conceptual design process for new aircraft is typically limited to the use of inexpensive low-fidelity methods. Unfortunately, these methods generally only provide the fidelity necessary to confidently go forward with a new design when they have been calibrated to previous aircraft of similar type and the design space does not include significant non-linearities. This substantially limits the application of new technology early in the design cycle, and means that only high-level information can be obtained, potentially limiting the available design space. To remedy this, new methods must be developed that can produce higher-fidelity results without a significant increase in cost. Here, a method is proposed for higher-fidelity aerodynamic analysis that incorporates 2D and 3D pressure distribution mapping into a multi-fidelity framework. This expands on previous work in the area by providing a multi-fidelity approach that allows for the prediction of the shape of the pressure distribution in addition to the level of aerodynamic performance. The novel methods presented are a procedure for smooth identification of transonic feature points, and an extension of shape-preserving response functions to include derivative information. To demonstrate their application, results are presented for a wing that has been optimized using the 3D solver FLO107 exclusively, as well as a combination of the 2D solver FLO103 and FLO107. The differences in required evaluations and the final results are documented, showing the potential for significant computational savings in both direct optimization and inverse design.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2020; ©2020 |
| Publication date | 2020; 2020 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | MacDonald, Timothy David |
|---|---|
| Degree supervisor | Alonso, Juan José, 1968- |
| Thesis advisor | Alonso, Juan José, 1968- |
| Thesis advisor | Kochenderfer, Mykel J, 1980- |
| Thesis advisor | Kroo, Ilan |
| Degree committee member | Kochenderfer, Mykel J, 1980- |
| Degree committee member | Kroo, Ilan |
| Associated with | Stanford University, Department of Aeronautics and Astronautics |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Timothy David MacDonald. |
|---|---|
| Note | Submitted to the Department of Aeronautics and Astronautics. |
| Thesis | Thesis Ph.D. Stanford University 2020. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2020 by Timothy David MacDonald
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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