Correlation of separation angles induced by glancing interactions

Koide, S.; Saida, Nobumi; Ogata, R.

doi:10.2514/3.13375

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…For very weak shock waves, such as with an upstream Mach number of around 1⋅1, the extent of the sswept shock wave/boundary-layer interaction (SBLI) is relatively weak, allowing the normal shock wave to extend into the boundary layer virtually as far as the sonic line with little smearing (1)(2)(3) . However, as the upstream Mach number increases, the distortion of the shock foot due to boundary layer thickening becomes increasingly significant.…”

Section: Introductionmentioning

confidence: 99%

Investigation of active control of swept shock wave/turbulent boundary-layer interactions – PSP results

et al. 2004

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An investigation of active control of the swept shock wave/boundary-layer interaction using 'smart' flap actuators is presented. The actuators are manufactured by bonding piezoelectric material to an inert substrate to control the bleed/suction rate through a plenum chamber. The cavity provides communication of signals across the shock, allowing rapid thickening of the boundary layer approaching the shock. This splits the shock foot into a series of weaker shocks forming a lambda structure, thus reducing wave drag. Active control allows optimisation of the unimorph deflection, hence rate of mass transfer.In this paper, results of the interaction using pressure sensitive paint (PSP) are emphasised. It is shown that the use of PSP, in conjunction with discrete pressure data, enables the main features of the interaction to be observed when the actuators are subject to different deflections.

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Section: Introductionmentioning

confidence: 99%

Investigation of active control of swept shock wave/turbulent boundary-layer interactions – PSP results

et al. 2004

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Active control of swept shock wave/turbulent boundary-layer interactions

et al. 2004

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This paper looks at active control of the swept shock wave/turbulent boundary-layer interaction using smart flap actuators. The actuators are manufactured by bonding piezoelectric material to an inert substrate to control the bleed/suction rate through a plenum chamber. The cavity provides communication of signals across the shock, allowing rapid thickening of the boundary-layer approaching the shock, which splits into a series of weaker shocks forming a lambda shock foot, reducing wave drag. Active control allows optimum control of the interaction, as it would be capable of positioning the control region around the original shock position and control the rate of mass transfer.The actuators are modelled using classical composite material mechanics theory, namely analysis of a laminate with a uniform cross section. Furthermore a finite element modelling program (ANSYS 5.7) was used to produce improved results.

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Prediction of Separation Angles Induced by Sharp Fins with Attack Angle

Koide

2001

AIAA Journal

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Correlation of separation angles induced by glancing interactions

Cited by 5 publications

References 6 publications

Investigation of active control of swept shock wave/turbulent boundary-layer interactions – PSP results

Investigation of active control of swept shock wave/turbulent boundary-layer interactions – PSP results

Active control of swept shock wave/turbulent boundary-layer interactions

Prediction of Separation Angles Induced by Sharp Fins with Attack Angle

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