Some effects of small-scale flow disturbance on nozzle-burner flames

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Description

Laminar-like and brush-like propane-air flames were obtained when wire grids were used as turbulence generators in a 1/2-inch nozzle burner. The laminar-like flames for grid-disturbed flow had a slightly higher burning velocity than "true" laminar flames (no grid used). The brush-like flames were similar to those obtained with pipe turbulent flow. Their burning-velocity dependence on a "flow disturbance" Reynolds number compared favorably with that obtained for pipe turbulent flames. Hot-wire-anemometer equipment was used to measure the flow disturbance intensity in the cold flow with and without the grids in place.

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19 p. : ill.

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Wong, Edgar L. September 1956.

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This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 68 times. More information about this report can be viewed below.

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  • Main Title: Some effects of small-scale flow disturbance on nozzle-burner flames
  • Series Title: NACA Technical Notes

Description

Laminar-like and brush-like propane-air flames were obtained when wire grids were used as turbulence generators in a 1/2-inch nozzle burner. The laminar-like flames for grid-disturbed flow had a slightly higher burning velocity than "true" laminar flames (no grid used). The brush-like flames were similar to those obtained with pipe turbulent flow. Their burning-velocity dependence on a "flow disturbance" Reynolds number compared favorably with that obtained for pipe turbulent flames. Hot-wire-anemometer equipment was used to measure the flow disturbance intensity in the cold flow with and without the grids in place.

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19 p. : ill.

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  • Accession or Local Control No: 93R13743
  • URL: http://hdl.handle.net/2060/19930084453 External Link
  • Report No.: NACA-TN-3765
  • Center for AeroSpace Information Number: 19930084453
  • Archival Resource Key: ark:/67531/metadc55970

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National Advisory Committee for Aeronautics Collection

The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915 to undertake, promote, and institutionalize aeronautical research. On October 1, 1958 the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and Space Administration (NASA).

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  • September 1956

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  • Nov. 17, 2011, 10:13 p.m.

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  • April 12, 2018, 5:23 p.m.

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Wong, Edgar L. Some effects of small-scale flow disturbance on nozzle-burner flames, report, September 1956; (https://digital.library.unt.edu/ark:/67531/metadc55970/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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