Effects of High Voltage Pulsed DBD on the Aerodynamic Performances in Subsonic and Transonic Conditions

Marino, A.; Catalano, Pietro; Marongiu, Claudio; Peschke, Philip; Hollenstein, Ch.; Donelli, Raffaele

doi:10.2514/6.2013-2752

Cited by 15 publications

(3 citation statements)

References 8 publications

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“…UZEN is normally used for simulating steady and unsteady flows around complex aeronautical configurations [23]. Some peculiar phenomena [21,24] and particular devices [25,26] can be reproduced. The κ − ω − γ SST [6] model, which was recently implemented and verified [16], has been applied.…”

Section: Proposed Model and Transition Detection Criterionmentioning

confidence: 99%

Model for Enhancing Turbulent Production in Laminar Separation Bubbles

2021

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Laminar separation bubbles are one of the main critical aspects of flows at low Reynolds numbers in the range of 10 4 -10 5 . The flow separates in the laminar regime, the turbulence developing inside the recirculation region enhances the momentum transport, and the flow can reattach. Models based on the Reynolds-averaged Navier-Stokes equations suffer two of main issues: the determination of the transition onset and the level of the pressure recovery downstream of the reattachment of the flow. A model addressing both issues is presented in this paper. It is based on the γ transition model for the transition detection. The production of the turbulent kinetic energy κ has been properly enhanced thanks to a correlation found between the necessary boosting of κ and the intermittency function behavior within the bubble. The low-Mach-number and Reynolds-number flows around the Selig-Donovan 7003, Eppler 387, and NACA 0015 airfoils are analyzed. The results are compared to experimental data and large-eddy simulations available in the literature. The model can be applied to the analysis of an arbitrary airfoil without need of preliminary calculation of the transition point within the bubble.

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Section: Proposed Model and Transition Detection Criterionmentioning

confidence: 99%

Model for Enhancing Turbulent Production in Laminar Separation Bubbles

2021

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“…UZEN solves the compressible Navier-Stokes equations based on a multi-block structured approach, and is normally used for simulating steady and unsteady flows around complex aeronautical models. Evidence of its efficacy has been provided through reproduction of flows involving some peculiar phenomena [24,25] and for complex devices [26,27]. The spatial discretization in UZEN consists of a central finite-volume formulation with explicit blended 2nd and 4th order artificial dissipation.…”

Section: New Cira Numerical Simulationsmentioning

confidence: 99%

Comparability of Hot-Wire Estimates of Liquid Water Content in SLD Conditions

Esposito¹,

Orchard²,

Lucke³

et al. 2023

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">Future compliance to FAA 14 CFR Part 25 and EASA CS-25 Appendix O conditions has required icing wind tunnels to expand their cloud simulation envelope, and demonstrate accurate calibration of liquid water content and droplet particle size distributions under these conditions. This has led to a renewed community interest in the accuracy of these calibrations, and the potential inter-facility bias due to the choice of instrumentation and processing methods. This article provides a comparison of the response of various hot-wire liquid water content instruments under Appendix C and supercooled large droplet conditions, after an independent similar analysis at other wind tunnel facilities. The instruments are being used, or are under consideration for use, by facilities collaborating in the ICE GENESIS program. For droplet median volume diameters (MVDs) between about 15 and 250 μm, cylindrical hot wire LWC sensors were found to consistently and increasingly under-read measurements from conical and trough TWC sensors as MVD increased, and were not considered further. Of the remaining TWC sensors, the specific instruments investigated were found to agree within about ± 20% of their average test point response for the range of conditions tested, but systematic scale differences between instruments were found to reach about a factor of 1.4. Sensitivity to increasing droplet MVD was concluded to be similar amongst different instruments given the uncertainties, except for two that exhibited notable roll-off with MVD relative to the others.</div></div>

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“…Fluidic air-jet VGs and tangential jet blowing with position at 15% of the chord length to control SBLI were also considered in [5]. Boundary layer suction [7] and application of plasma actuators [8][9] were also considered. These concepts have multiple advantages, such as optional turning on during cruise regime and operation in a closed-loop strategy to optimize flow control.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Transonic Buffet and Its Control Using Tangential Jet Blowing

Abramova¹,

Khairullin²,

Рыжов³

et al. 2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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Abstract. The unsteady interaction between a shock wave and boundary layer over a transonic wing can lead to the generation of considerable separation zones and periodical shock wave motion along the airfoil chord. The phenomenon is called transonic buffet. In the present work the buffet phenomenon on a transonic airfoil is simulated numerically using second order finite-volume method. Unsteady Reynolds Averaged Navier-Stokes (URANS) equations with different turbulence models are integrated. Transonic airfoil P-184-15SR of TsAGI is used as a reference geometry with

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Effects of High Voltage Pulsed DBD on the Aerodynamic Performances in Subsonic and Transonic Conditions

Cited by 15 publications

References 8 publications

Model for Enhancing Turbulent Production in Laminar Separation Bubbles

Model for Enhancing Turbulent Production in Laminar Separation Bubbles

Comparability of Hot-Wire Estimates of Liquid Water Content in SLD Conditions

Numerical Simulation of Transonic Buffet and Its Control Using Tangential Jet Blowing

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