Building a Practical Natural Laminar Flow Design Capability
| Autor: | Richard L. Campbell, Michelle N. Lynde |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
020301 aerospace & aeronautics
Nacelle business.industry Computer science Flow (psychology) Reynolds number Control engineering 02 engineering and technology Modular design 01 natural sciences 010305 fluids & plasmas symbols.namesake Boundary layer 0203 mechanical engineering 0103 physical sciences Line (geometry) symbols Supersonic speed business Transonic |
| Zdroj: | 35th AIAA Applied Aerodynamics Conference. |
| DOI: | 10.2514/6.2017-3059 |
| Popis: | A preliminary natural laminar flow (NLF) design method that has been developed and applied to supersonic and transonic wings with moderate-to-high leading-edge sweeps at flight Reynolds numbers is further extended and evaluated in this paper. The modular design approach uses a knowledge-based design module linked with different flow solvers and boundary layer stability analysis methods to provide a multifidelity capability for NLF analysis and design. An assessment of the effects of different options for stability analysis is included using pressures and geometry from an NLF wing designed for the Common Research Model (CRM). Several extensions to the design module are described, including multiple new approaches to design for controlling attachment line contamination and transition. Finally, a modification to the NLF design algorithm that allows independent control of Tollmien-Schlichting (TS) and cross flow (CF) modes is proposed. A preliminary evaluation of the TS-only option applied to the design of an NLF nacelle for the CRM is performed that includes the use of a low-fidelity stability analysis directly in the design module. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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