Towards the improvement of the ONERA transonic S3Ch wind tunnel
| Autor: | Vincent, Brion, Dandois, Julien, Couliou, Marie, Florentin, Daniel |
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| Přispěvatelé: | DAAA, ONERA, Université Paris Saclay [Meudon], ONERA-Université Paris-Saclay |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | STO-AVT-338-Specialists’Meeting on ‘Advanced Wind Tunnel Boundary Simulation' STO-AVT-338-Specialists’Meeting on ‘Advanced Wind Tunnel Boundary Simulation', May 2021, Berlin, Germany |
| Popis: | International audience; Modern CFD techniques offer new opportunities to upgrade wind tunnels. Here we apply a RANS model to compute the flow through the circuit of the S3Ch transonic wind tunnel of ONERA Meudon center. The flow is set by implementing a disc of actuation at the location of the fan and total pressure and temperature losses at the location of the heat exchanger in the settling chamber. The methodology is validated against a reduced set of experimental flow data available in the settling chamber and test section. The results are considered along with standard design guidelines to define modifications to this circuit in order to improve flow quality. The new circuit will be implemented when the wind tunnel is moved to a different location in the near future. Another part of the work is dedicated to the calculation of the adaptive top and bottom walls of the test section. As an attempt to upgrade the current tool which uses a linearized potential model of the flow inside the test section, we consider a RANS approach and define a new optimization process to minimize the impact of the walls on the flow of interest compared to the flow in free flight conditions. The new methodology is applied to the particular case of a wing airfoil in transonic conditions and shows close to perfect correction when considering simulated data alone. |
| Databáze: | OpenAIRE |
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