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Communication Dans Un Congrès Année : 2020

On the use of Zonal Immersed Boundaries on the FG5 missile configuration

Résumé

One of the major problems in applied aerodynamics remains the representativness of the flow around complex geometries, especially for unsteady numerical simulations. In this context, Weiss and Deck [26] proposed to use both Immersed Boundary Conditions (IBC) and body-fitted (BF) boundary conditions to simulate a fullspace launcher. This approach, named Zonal Immersed Boundary Conditions (ZIBC), takes advantage of IBC to add complex geometrical details in simple body-fitted configurations. So far, this approach has been used with the IBC formulation presented by Mochel et al. [16]. The present paper introduces a new IBC formulation inside the ZIBC framework based on a sharp surface reconstruction approach. Moreover, a wall model is coupled with the IBC to reduce the mesh requirements related to accurate prediction of turbulent boundary layers. The purpose of these additions is to extend the use of IBC for the simulation of technological details in attached flow regions. A FG5 missile configuration is computed using ZIBC at a Mach number of 0.8 and an angle of attack of 10 •. For this configuration, the fuselage is modelled using a bodyfitted grid, and the wings are introduced with the new IBC formulation. The accuracy of the current approach is assessed comparing a full body-fitted simulation with the available experimental data.
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Dates et versions

hal-03228534 , version 1 (18-05-2021)

Identifiants

  • HAL Id : hal-03228534 , version 1

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Lucas Manueco, Pierre-Élie Weiss, Sébastien Deck. On the use of Zonal Immersed Boundaries on the FG5 missile configuration. 55th 3AF International conference on Applied Aerodynamics, Mar 2020, Poitiers, France. ⟨hal-03228534⟩
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