Numerical simulation of flows around helicopters at DLR and ONERA
| Autor: | Michel Costes, Jacques Sidès, Klansdieter Pahlke |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Unsteady aerodynamics
Aerospace Engineering Computational fluid dynamics Helicopter fuselage law.invention symbols.namesake law Inviscid flow Chimeragrid Aerospace engineering Navier–Stokes equations Hovering flight Kirchhoff method Mathematics NavierStokes equations business.industry Aerodynamics Rotor-fuselage interaction Euler equations Fuselage Drag Helicopter rotor Movinggrid symbols Forward flight Numerical methods business Turbulence models High speed impulsive noise |
| Zdroj: | Aerospace Science and Technology. 5:35-53 |
| ISSN: | 1270-9638 |
| DOI: | 10.1016/s1270-9638(00)01078-6 |
| Popis: | This paper presents an overview of recent activities in CFD research conducted within cooperations between DLR and ONERA for the simulation of helicopter arerodynamics. These activities are mainly illustrated by two topics in the framework of a previous 3-year bilateral cooperation on `Rotorcraft CFD code Development', the objective of which was the assessement, comparison and further improvement of the DLR and ONERA Euler/Navier–Stokes methods for the prediction of the flow around isolated helicopter rotors. The first topic is devoted to a comparison of two different grid strategies for time-accurate inviscid flow computations of multibladed rotors in forward flight from the solution of Euler equations: the moving grid approach by ONERA and the overlapping grid technique by DLR. The second topic is concerned with a comparison of respective Euler/Kirchhoff aeroacoustic methods for the prediction of High Speed Impulsive noise of rotors. For the assessment and improvement of Navier–Stokes methods for fuselage drag prediction, a comparison between DLR and ONERA Navier–Stokes solutions achieved within the prediction phase of the Brite/EuRam European project `HELIFUSE' is also presented. The paper is concluded by a summary of ongoing DLR and ONERA research activities in the framework of the new long-term project `CHANCE' (Complete Helicopter AdvaNced Computational Environment) for the development and assessment of common Franco-German CFD tools for the complete helicopter accounting for trim and dynamics. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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