Extended heat-transfer relation for an impinging laminar flame jet to a flat plate
Author
Summary, in English
Many industrial applications use flame impingement to obtain high heat-transfer rates. An analytical expression for the convective
part of the heat transfer of a flame jet to a plate is derived. Therefore, the flame jet is approximated by a hot inert jet. In contradiction
with existing convective heat-transfer relations, our analytical solution is applicable not only for large distances between the jet and the
plate, but also for close spacings. Multiplying the convective heat transfer by a factor which takes chemical recombination in the cold
boundary layer into account, results in an expression for the heat flux from a flame jet to the hot spot of a heated plate. Numerical and
experimental validation show good agreement.
part of the heat transfer of a flame jet to a plate is derived. Therefore, the flame jet is approximated by a hot inert jet. In contradiction
with existing convective heat-transfer relations, our analytical solution is applicable not only for large distances between the jet and the
plate, but also for close spacings. Multiplying the convective heat transfer by a factor which takes chemical recombination in the cold
boundary layer into account, results in an expression for the heat flux from a flame jet to the hot spot of a heated plate. Numerical and
experimental validation show good agreement.
Department/s
Publishing year
2008
Language
English
Pages
1854-1865
Publication/Series
International Journal of Heat and Mass Transfer
Volume
51
Issue
7-8
Links
Document type
Journal article
Publisher
Pergamon Press Ltd.
Topic
- Atom and Molecular Physics and Optics
Keywords
- Phosphorescence
- Heat transfer
- Impinging flame jet
- Oxy-fuel
Status
Published
ISBN/ISSN/Other
- ISSN: 0017-9310