A Computational Assessment of Independent Stage Control of a Cascade Injector

Meicenheimer, Heidi; Gutmark, Ephraim; Carter, C.; Eklund, Dean; Gruber, Mark

doi:10.2514/6.2006-4863

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…As noted above our investigation of gaseous fuel injectors has ranged from the study of simple circular wall injectors to the study of more complicated approaches, such as the use of pylon-based injectors [8,20], tandem injectors (e.g., the cascade injector [21]), and diamondshaped injectors [32,33,52]. In the case of simple circular injectors, a recent effort has focused on providing a validation data set for modelers; this is discussed below in the section on Multidisciplinary Laser Measurements.…”

Section: Gaseous Fuel Injectionmentioning

confidence: 99%

Supersonic Combustion Ramjet Research

Carter¹

2012

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Section: Gaseous Fuel Injectionmentioning

confidence: 99%

Supersonic Combustion Ramjet Research

Carter¹

2012

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“…Various fuelinjection techniques, from different arrangements and shapes of flush-wall injectors to in-stream injection concepts (e.g., ramps, struts, etc. ), have been explored in an attempt to enhance the fuel-air mixing rate [1][2][3][4][5][6][7][8][9][10]. In general, the larger the disruption a fuel injector generates in the supersonic flow, the more effective the mixing of fuel and air.…”

Section: Nomenclaturementioning

confidence: 99%

Experimental Studies of Pylon-Aided Fuel Injection into a Supersonic Crossflow

Gruber¹,

Carter²,

Montes³

et al. 2008

Journal of Propulsion and Power

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The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Department of Defense, Washington Headquarters Services, Directorate for Information AFRL-RZ-WP-TP-2008-2170 SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSORING/MONITORING AGENCY ACRONYM(S)Air Force SPONSORING/MONITORING AGENCY REPORT NUMBER(S) AFRL-RZ-WP-TP-2008-2170 DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release; distribution unlimited. SUPPLEMENTARY NOTESPAO case number AFRL/WS07-0430, 28 February 2007. This is a work of the U.S. Government and is not subject to copyright protection in the United States. Document contains color. ABSTRACTAn investigation of the nonreacting flow associated with pylon-aided gaseous fuel injection into a Mach 2 crossflow is described. In this study, a small pylon was positioned just upstream of a circular flush-wall fuel injector. Three pylon geometries were studied, along with a no-pylon reference case. In all cases, a typical cavity-based flameholder was positioned downstream of the fuel injector. The injectant plume characteristics were interrogated using a variety of laser-based and probe-based measurement techniques. Planar laser-induced fluorescence of nitric oxide was used to study the instantaneous plume structure. Spontaneous vibrational Raman scattering provided time-averaged plume characteristics and mixing information. Probe-based instrumentation was used in conjunction with the mixing data to estimate the total pressure losses associated with each configuration. Each pylon had a unique influence on the fuel-injection plume. In all cases, the presence of the pylon resulted in improved fuel penetration into the supersonic crossflow without significantly changing the total pressure-loss characteristics. Mixing efficiencies of the pylonaided injection cases were not substantially different from the reference case. An investigation of the nonreacting flow associated with pylon-aided gaseous fuel injection into a Mach 2 crossflow is described. In this study, a small pylon was positioned just upstream of a circular flush-wall fuel injector. Three pylon geometries were studied, along with a no-pylon reference case. In all cases, a typical cavity-based flameholder was positioned downstream of the fuel injector. The injectant plume characteristics were interrogated using a variety of laser-based and probe-based measurement techniques. Planar laser-induced fluorescence of nitric oxide was used to study the instantaneous plume structure. Spontaneous vibrational Raman scattering provided time-averaged plume characteristics and mixing information. Probe-based instrumentation was u...

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Flow patterns and mixing characteristics of gaseous fuel multiple injections in a non-reacting supersonic combustor

Sun

Lei

et al. 2011

Heat Mass Transfer

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A Computational Assessment of Independent Stage Control of a Cascade Injector

Cited by 4 publications

References 6 publications

Supersonic Combustion Ramjet Research

Supersonic Combustion Ramjet Research

Experimental Studies of Pylon-Aided Fuel Injection into a Supersonic Crossflow

Flow patterns and mixing characteristics of gaseous fuel multiple injections in a non-reacting supersonic combustor

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