Accession Number:

ADA053635

Title:

Flame Efficiency, Stabilization and Performance in Prevaporizing/Premixing Combustors.

Descriptive Note:

Final rept. 1 Sep 75-30 Nov 77,

Corporate Author:

PURDUE UNIV LAFAYETTE IND COMBUSTION LAB

Personal Author(s):

Report Date:

1977-12-01

Pagination or Media Count:

214.0

Abstract:

Problems of combustion efficiency, incomplete prevaporization and flame stabilization blowoff andor flashback associated with advanced prevaporizingpremixing turbojet combustors, afterburners and ramjet combustors are examined experimentally using a simplified axisymmetric burner. In addition to variations in combustor pressure, inlet temperature, equivalence ratio and air velocity typical of modern combustors, geometry and heterogeneous effects are also considered. Both flame stabilization and combustion efficiency data are examined using conventional and characteristic time correlations. Characteristic times, which have already been used to correlate and predict gaseous emissions in conventional combustors are quantified here for blowoff. The model is based on the flame stabilization theory of Zukoski and Marble and includes inlet, geometry and heterogeneous effects simultaneously, unlike traditional loading parameters.

Subject Categories:

  • Crystallography
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE