Control of turbulent separation from an inclined cylinder of finite aspect ratio, thus affecting its yaw

Harshad Kalyankar, Lutz Taubert, Israel J Wygnanski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Turbulent flow surrounding a yawed circular cylinder of finite aspect ratio, that was either swept back or swept forward, was investigated experimentally. The cylinder that was capped by an ellipsoid of revolution, contained two small actuators emitting sweeping-jets that were tangential to the surface and orthogonal to the axis of the cylinder. Actuation created large yawing moments capable of overcoming the natural restoring force toward the plane of symmetry. Thus, in the swept-back configuration this experiment is relevant to the control of an aerial refueling boom while in the swept-forward configuration it enables the control of a cylindrical missile type object at large incidence angles. The forces and moments acting on the cylinder at various yaw angles were measured by balance while the interaction between the jets and the flow in the lee of the cylinder was mapped using 2D-Particle Image Velocimetry. Surface flow visualization was used in order to confirm the sensitivity of the flow to the azimuthal location of the actuators at different yaw angles.

Original languageEnglish (US)
Title of host publication59th Israel Annual Conference on Aerospace Sciences, IACAS 2019
PublisherIsrael Annual Conference on Aerospace Sciences
Pages621-630
Number of pages10
ISBN (Electronic)9781510882782
Publication statusPublished - Jan 1 2019
Event59th Israel Annual Conference on Aerospace Sciences, IACAS 2019 - Tel-Aviv and Haifa, Israel
Duration: Mar 6 2019Mar 7 2019

Publication series

Name59th Israel Annual Conference on Aerospace Sciences, IACAS 2019

Conference

Conference59th Israel Annual Conference on Aerospace Sciences, IACAS 2019
CountryIsrael
CityTel-Aviv and Haifa
Period3/6/193/7/19

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ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Kalyankar, H., Taubert, L., & Wygnanski, I. J. (2019). Control of turbulent separation from an inclined cylinder of finite aspect ratio, thus affecting its yaw. In 59th Israel Annual Conference on Aerospace Sciences, IACAS 2019 (pp. 621-630). (59th Israel Annual Conference on Aerospace Sciences, IACAS 2019). Israel Annual Conference on Aerospace Sciences.