Turbulent and Unsteady Flow Characteristics of Delta Wing Vortex Systems

Furman, Andrej; Breitsamter, Christian

doi:10.2514/6.2008-381

Cited by 28 publications

(26 citation statements)

References 7 publications

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“…Furman and Breitsamter [10] conducted pressure investigations for sharp and rounded leading edge delta wings using pressure sensors. In a more recent work, the same authors combined pressure measurements with flow visualization, PIV and hot-wire measurements [11]. A detailed analysis of the flow above the delta wing was made, including velocity and Reynolds stresses distribution.…”

Section: Introductionmentioning

confidence: 99%

Turbulence Kinetic Energy Balance in the Wake of a Sharp-edged Highly Swept Delta Wing

Panagiotou

Sideridis

Yakinthos

et al. 2015

Flow Turbulence Combust

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Hot-wire measurements in the wake of a flat plate delta wing, at a fixed angle of attack, were carried-out in order to investigate its turbulence kinetic energy budget. The purpose of this study is to help acquire more information about the vortex structure formed in the wake region of the delta wing and to provide data for turbulence models' validation. Point measurements were conducted in five planes perpendicular to the flow, on a high spatial resolution two-dimensional measurement grid that allowed precise derivative calculations of the flow quantities needed for the derivation of the kinetic energy budget. The turbulence kinetic energy convection, production, viscous diffusion and turbulence diffusion terms were directly obtained from the experimental data, whereas dissipation and pressure diffusion terms were calculated indirectly using techniques presented and validated in previous studies. All of the terms of the turbulence kinetic energy budget, along with the velocity components and the Reynolds stresses, are presented and discussed.Keywords Delta wing · Hot-wire anemometry · Measurement · Turbulence kinetic energy balance · Vortex breakdown · Wake NomenclatureEnglish symbols C k convection term of the TKE budget D p pressure diffusion term of the TKE budget D t turbulence diffusion term of the TKE budget D v viscous diffusion term of the TKE budget e iso isotropic expression for the dissipation term of the TKE budget k turbulence kinetic energy per unit mass

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Section: Introductionmentioning

confidence: 99%

Turbulence Kinetic Energy Balance in the Wake of a Sharp-edged Highly Swept Delta Wing

Panagiotou

Sideridis

Yakinthos

et al. 2015

Flow Turbulence Combust

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“…The measurements were accompanied by numerical investigations to support the interpretation of the flow physics, and in the present paper only limited numerical details are used similarly. The history of VFE-2 has been described by D. Hummel 7 , and the authors [8][9][10][11][12] of the experimental contributions to VFE-2 have presented their work in separate papers. The main results of the new experiments within VFE-2 are summarized below.…”

Section: Introductionmentioning

confidence: 99%

What was Learned from the New VFE-2 Experiments?

Luckring

Hummel

2008

46th AIAA Aerospace Sciences Meeting and Exhibit

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“…Other works have quantitatively revealed complex flow features such as secondary vortices around delta wings, vortex breakdown and shear layer instabilities (Furman and Breitsamter 2013;Wang et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, being non-intrusive (Raffel et al 2007;Westerweel et al 2013) PIV is well suited for the study of vortices emanating from rotating blades. Most PIV experiments conducted on vortices employed the planar approach based on the stereoscopic configuration (Konrath et al 2013;Furman and Breitsamter 2013). One of the underlying hypotheses of particle image velocimetry is that the tracer particles can be assumed to move at the same velocity as the surrounding fluid.…”

Section: Introductionmentioning

confidence: 99%