Experimental investigation of reactive turbulent recirculating jet mixing in a dumpA ducted, subsonic, hydrogen air turbulent jet mixing flowfield was investigated, both with and without combustion. The geometric configuration was representative of a sudden expansion or dump combustor, with a central air jet surrounded by a low velocity hydrogen stream at an overall equivalence ratio of 0.12. The ratio of the duct to inner nozzle diameter was 2.5. Radial distributions of mean axial and radial velocity, axial and radial turbulent intensity, velocity cross correlation, gas composition, static temperature and total pressure, as well as axial distributions of wall static pressure, were obtained for axial stations from zero to six duct diameters from the combustor entrance. The data indicate that mixing is slower in the chemically reactive flow field than in the nonreactive flow field, and that the presence of combustion has a significant effect on the size and location of the recirculation zone within the mixing duct.
Document ID
19810007765
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Smith, G. D. (ARO, Inc. Arnold AFS, TN, United States)
Giel, T. V. (ARO, Inc. Arnold AFS, TN, United States)
Catalano, C. G. (ARO, Inc. Arnold AFS, TN, United States)
Date Acquired
August 11, 2013
Publication Date
November 1, 1980
Publication Information
Publication: NASA. Langley Research Center The 17th JANNAF Combust. Meeting, Vol. 1