Active flow control in supersonic nozzles

Ferlauto, Michele

doi:10.1063/1.5044105

Cited by 1 publication

(1 citation statement)

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“…12,17 Approaches which are not involved an external source of bleeding air have been also investigated. Active flow control strategies by using the synthetic jets 18 or plasma actuators 19 have been studied.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of secondary mass flow modulation in a Bypass Dual-Throat Nozzle

Hamedi-Estakhrsar

Ferlauto

Mahdavy-Moghaddam

2020

Proceedings of the Institution of Mechanical Engineers, Part G:

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The fluidic thrust-vectoring modulation on a Bypass Dual-Throat Nozzle (BDTN) is studied numerically. The thrust vectoring modulation is obtained by varying the secondary mass flow, introducing different area contraction ratios of the bypass duct. The scope of present study is twofold: (i) to set up a model for the control of the secondary mass flow that is consistent with the resolution of the nozzle main flow and (ii) to derive a simplified representation of a valve system embedded in the bypass channel. The simulations of the turbulent airflow inside the BDTN and its efflux in the external ambient have been simulated by using RANS approach with RNG [Formula: see text] turbulence modeling. The numerical results have been validated with experimental and numerical data available in the open literature. The nozzle performance and thrust vector angle are computed for different values of the bypass area contraction ratio. The effects of different secondary mass flow rates on the system resultant thrust ratio and discharge coefficient of the bypass dual-throat nozzle have been investigated. By using the proposed approach to the secondary mass flow modulation, the thrust pitch angle has been controlled up to 27°.

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