This work presents Detached-Eddy Simulations with strongly-coupled aeroelastic modelling for a generic store located at three positions relative to an idealised cavity with a length-to-depth ratio of 7. Results from three computation are presented with the aim of understanding the effects that the store has on the flow inside and near the cavity and vice-versa. Multi-block structured topologies were used to properly represent the store at various positions including the details of its fins and empty booster compartment. The flow for each case was computed using the HMB2 flow solver of Liverpool at a Mach number of 0.85 and Reynolds number of 6.5 × 10~6. Based on overall sound pressure levels along the floor and at the shear layer of the cavity, the store at carriage position is seen to pacify the flow inside the cavity, while the influence of the store reduces as it moves to the shear layer and finally it has little or no influence outside the cavity. Spectral analyses showed the dominance of the second Rossiter mode in all cases with the most reduction in energy when the store is at carriage position. The loads on the store fins and body were more unsteady when the store is at the shear layer. Overall there was little change in load magnitude between the rigid and aeroelastic cases with the biggest differences seen when the store is at the shear layer where the loads on the aeroelastic fins are seen to be slightly lower.
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