Analysis of mixing zone length using methane as fuel
The distributions of pressure, temperature and velocity, and correlation between radial and axial gradients of fuel mass fraction in an axisymmetric combustor are examined. A model for methane-air mixing in non-flammable mixtures, based on the ideal gas law and the equation of continuity, is described. High axial gradients of fuel mass fraction are required to produce a short mixing zone. Results show that high pressures and temperatures reduce the axial gradients of fuel, while high gradients of pressure and temperature can reduce the length of the mixing zone. High radial gradients of fuel mass fraction in conjunction with a large ratio of radial and axial velocity also shorten the mixing. Mixing is enhanced most by velocity divergence and temperature gradients. Analysis of the length of the mixing zone provides guidelines for the development of compact, high intensity, high efficiency and low emission combustors.
- Research Organization:
- Univ. of Maryland, College Park, MD (US)
- OSTI ID:
- 20002761
- Resource Relation:
- Conference: 33rd Intersociety Energy Conversion Engineering Conference, Colorado Springs, CO (US), 08/02/1998--08/06/1998; Other Information: 1 CD-ROM. Operating system required: Windows 3.x; Windows 95/NT; Macintosh; UNIX. All systems need 2X CD-ROM drive.; PBD: 1998; Related Information: In: Proceedings of the 33. intersociety energy conversion engineering conference, by Anghaie, S. [ed.], [2800] pages.
- Country of Publication:
- United States
- Language:
- English
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