Flame Stabilizing Effects of Inclined Air Jets

Duclos, Donald P.; Schaffer, Allan; Cambel, Ali Bulent

doi:10.1021/ie50576a050

Cited by 7 publications

(1 citation statement)

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“…The investigations of the 0 RJ have been primarily ii The ORJ did not prove to be practical for use in afterburners because the flamcholding capacity was found to decrease significantly as the angle of the jet to the direction of flow increased a few degrees (Duclos et al 1957). (Schaffer, 1957).…”

Section: Flameholding Conceptsmentioning

confidence: 99%

Analytical and Experimental Investigation of an Ammonia/Air Opposed Reacting Jet

Samuelsen

Starkman

1972

Combustion Science and Technology

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Abstract-The point-by-point properties of an ammonia/air opposed-reacting-jet flowfield are described by solving the governing partial differential elliptic equations. Analytical descriptions of the reacting flow.field are compared to experimentally measured profiles of temperature and composition. Calculated distributions of stream function , temperature and fuel mole fraction are also presented. NOTATJON SubscriptsA c,,r T pre-exponential factor in reaction rate expression specific heat, Btu/lbm-0 R combustor diameter, in. mass diffusivity activation energy, Btu/lbm-mole reaction order with respect to ammonia heat of combustion , Btu/lbmru stagnation enthalpy, Btu/lbm constant in effective viscosity expression thermal conductivity, Btu/hr-ft-°F length of flow field , ft. mass fraction mass flow rate, lbm/sec overall reaction order reaction rate, lbm 11

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Section: Flameholding Conceptsmentioning

confidence: 99%

Analytical and Experimental Investigation of an Ammonia/Air Opposed Reacting Jet

Samuelsen

Starkman

1972

Combustion Science and Technology

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The round jet in a uniform counterflow: flow visualization and mean concentration measurements

Yoda¹,

Fiedler²

1996

Experiments in Fluids

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427Abstract The structure and concentration field of a round water jet in a uniform counterflow is investigated using planar laser-induced fluorescence for jet to counterflow velocity ratios between 1.6 and 10.0. At low jet-to counterflow velocity ratios, the flow appears to be quite stable, with a nearly constant downstream extent and regular vortex shedding. As the velocity ratio increases, the flow becomes more unstable, with significant fluctuations along both the downstream and radial directions. The flow is quite sensitive to directional perturbations, with even slight inclinations of the jet with respect to the counterflow resulting in regular asymmetric vortex shedding and a decreased mean downstream extent. Data on the mean and maximum downstream extents, as well as the maximum radial extent of the flow at various velocity ratios, are shown. A simple model is introduced to explain the dependence of the normalized mean downstream extent of the flow upon the velocity ratio. In addition, mean concentration data are presented. The results suggest that there exists a core region of "jet-like" dilution in the flow.

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On flame stabilization by convergent annular jets

Massaro

Trezek

1967

Combustion and Flame

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Flame Stabilizing Effects of Inclined Air Jets

Cited by 7 publications

References 0 publications

Analytical and Experimental Investigation of an Ammonia/Air Opposed Reacting Jet

Analytical and Experimental Investigation of an Ammonia/Air Opposed Reacting Jet

The round jet in a uniform counterflow: flow visualization and mean concentration measurements

On flame stabilization by convergent annular jets

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