Particle Image Velocimetry in an Isothermal and Exothermic High-Speed Cavity

Tuttle, Steven G.; Carter, Campbell D.; Hsu, Kuang–Yu

doi:10.2514/6.2012-330

Cited by 18 publications

(30 citation statements)

References 14 publications

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“…Figure 4 shows the time-averaged structure of the flow (via streamlines) inside the cavity flameholder as predicted by each class of turbulence model (LEV, EAS, and hybrid RAS/LES). Also shown are the streamlines extracted from time-averaged particle image velocimetry (PIV) measurements taken by Tuttle et al [10]. The predicted flow structure is qualitatively similar to the measurements, with a dominant clockwise rotating recirculation zone and a smaller counterclockwise rotating recirculation zone near the front wall of the cavity.…”

Section: Hybrid Reynolds-averaged/large-eddy Simulation Settingssupporting

confidence: 56%

“…The nominal flow conditions considered in the experiments conducted by Tuttle et al [10] are given in Table 1. The fuel flow rates, reported in standard liters per minute (SLPM), are based on a reference state of 273 K and 1 atmosphere.…”

Section: Geometry Description and Flow Conditionsmentioning

confidence: 99%

“…Experimental data available for validation include two components of velocity (via particle image velocimetry) taken at the center plane of the cavity flameholder [10]. Fuel concentration measurements are also available at a limited number of stations within the cavity flameholder.…”

mentioning

confidence: 99%

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Hybrid Reynolds-Averaged/Large-Eddy Simulation of a Scramjet Cavity Flameholder

Baurle

2017

AIAA Journal

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.J055339Steady-state and scale-resolving simulations have been performed for flow in and around a model scramjet combustor flameholder. Experimental data available for this configuration include velocity statistics obtained from particle image velocimetry as well as a limited number of scalar measurements using laser-induced breakdown spectroscopy. Several turbulence models were used for the steady-state Reynolds-averaged simulations, which included both linear and nonlinear eddy viscosity models. The scale-resolving simulations used a hybrid Reynoldsaveraged/large-eddy simulation strategy that is designed to be a large-eddy simulation everywhere except in the inner portion (log layer and below) of the boundary layer. Hence, this formulation can be regarded as a wall-modeled largeeddy simulation. This effort was undertaken to not only assess the performance of the hybrid Reynolds-averaged/ large-eddy simulation modeling approach in a flowfield of interest to the scramjet research community but also to begin to understand how this capability can best be used to augment standard Reynolds-averaged simulations. The numerical errors were quantified for the steady-state simulations and at least qualitatively assessed for the scaleresolving simulations before making any claims of predictive accuracy relative to the measurements. The steady-state Reynolds-averaged results displayed a high degree of variability when comparing the flameholder fuel distributions obtained from each turbulence model. This prompted the consideration of applying the higher-fidelity scale-resolving simulations as a surrogate "truth" model to calibrate the Reynolds-averaged closures in a nonreacting setting before their use for the combusting simulations. In general, the Reynolds-averaged velocity profile predictions at the lowest fueling level matched the particle imaging measurements almost as well as was observed for the nonreacting condition. However, the velocity field predictions proved to be more sensitive to the flameholder fueling rate than was indicated in the measurements.

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Section: Hybrid Reynolds-averaged/large-eddy Simulation Settingssupporting

confidence: 56%

Section: Geometry Description and Flow Conditionsmentioning

confidence: 99%

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Hybrid Reynolds-Averaged/Large-Eddy Simulation of a Scramjet Cavity Flameholder

Baurle

2017

AIAA Journal

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“…A more complete description of the work is given in Ref. 98, which received an AIAA Best Paper Award for 2011. …”

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confidence: 99%

Supersonic Combustion Ramjet Research

Carter¹

2012

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“…Several authors have published 2D PIV results of ramp fueled DMSJ's, cavity fueled DMSJ's, and a DMSJ isolator [24,28,32,33]. A significant gap in the literature is the measurement of all three components of velocity, particularly with respect to DMSJ's.…”

Section: Historical Backgroundmentioning

confidence: 99%

Characterization of a Dual-Mode Scramjet via Stereoscopic Particle Image Velocimetry

Rice

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Scramjet propulsion devices have the potential for revolutionizing high-speed atmospheric flight in the future. This includes aerospace planes for space access and high-speed long distance strike vehicles for national defense. Despite over 60 years of research, the high-speed, turbulent, combusting flow field of the engine is not fully understood. In particular, the dual-mode scramjet (DMSJ) is complicated by the ability to operate in different modes of combustion. These modes of combustion are referred to as the ramjet mode of operation, characterized by subsonic combustor inflow, and the scramjet mode of operation, characterized by supersonic combustor inflow. The gap in iii

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Particle Image Velocimetry in an Isothermal and Exothermic High-Speed Cavity

Cited by 18 publications

References 14 publications

Hybrid Reynolds-Averaged/Large-Eddy Simulation of a Scramjet Cavity Flameholder

Hybrid Reynolds-Averaged/Large-Eddy Simulation of a Scramjet Cavity Flameholder

Supersonic Combustion Ramjet Research

Characterization of a Dual-Mode Scramjet via Stereoscopic Particle Image Velocimetry

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