Database Approach for Laminar-Turbulent Transition Prediction on Heated Wall
| Autor: | Estelle Piot, Julien Saint-James, Hugues Deniau, Olivier Vermeersch |
|---|---|
| Přispěvatelé: | ONERA / DMPE, Université de Toulouse [Toulouse], ONERA-PRES Université de Toulouse |
| Rok vydání: | 2020 |
| Předmět: |
[PHYS]Physics [physics]
Physics 020301 aerospace & aeronautics LAMINAR-TURBULENT TRANSITION 02 engineering and technology Mechanics HEATED WALL 01 natural sciences PAROI CHAUFFEE 010305 fluids & plasmas Physics::Fluid Dynamics METHODE DU FACTEUR N [SPI]Engineering Sciences [physics] N FACTOR METHOD 0203 mechanical engineering TRANSITION LAMINAIRE-TURBULENT 0103 physical sciences Laminar-turbulent transition INSTABILITES DE TOLLMIEN-SCHLICHTING PARABOLAS METHOD TOLLMIEN-SCHLICHTING INSTABILITY METHODE DES PARABOLES |
| Zdroj: | AIAA 2020 AIAA SCITECH 2020 AIAA SCITECH 2020, Jan 2020, Orlando, United States. ⟨10.2514/6.2020-1035⟩ |
| DOI: | 10.2514/6.2020-1035 |
| Popis: | International audience; A database approach is developed to predict laminar-turbulent transition of a boundary layer over a heated wall. This approach is based on the local linear stability theory (LLST). The database method is an expansion of the ONERA’s so-called Parabolas method. Growth rate instabilities are stored in a database indexed on relevant flow parameters. The transition position is determined via the so-called N-factor method. First validations are made on exact stability computations. In the final paper validation will be made on an ONERAD airfoil equipped with heating device where the impact of the wall temperature on laminar-turbulent transition was measured. RANS results for this test case will be compared to experimental data. |
| Databáze: | OpenAIRE |
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