الفهرس 
LITERATURE REVIEW...Only 14 pages are availabe for public view
 |  | from | 174 |  |  |
| | | from | 174 | | |
Abstract
An experimental work was carried out to investigate the effect of the
swirl mixing on the performance of a liquid fuel flame in a confined
chamber. The swirl was generated by a vanned double swirler
splitting the combustion air into two streams called primary air ( close to
the burner nozzle) and secondary air (surrounding the first stream).As the
aerodynamic field of this swirl burner is tailored by the variation of the
two swirl angles introduced to both streams, this study was aimed to
investigate the variation of the diffusion flame performance with
changing the inner and outer swirl angles independently. A group of
eight swirlers were constructed to study all combinations of 45.° and 60.0
swirl angles between the inner and outer streams producing both the co
-swirl and the counter-swirl cases.
Flame temperature and species concentration were measured for the
different cases of swirl to determine the double swirl combination that
produces:
1- The highest flame temperature.
2- The highest C02 containment.
3- The least flame length.
This swirl effect would result in the most intensified flame for the
power engineering applications. By the examination of all possible
arrangements of double swirl combinations of 45.0 and 60.°, a criteria
was set to determine the most efficient flame through the
investigation of the above three items as a result of the change of the
aerodynamic structure between swirl cases according to the following:
l-The more efficient swirl relative direction mode (i.e. co versus counter-swirl).
2-The optimum total degree of swirl imparted to the double swirl
burner.
3-The most effective distribution of the swirl intensity between the two
swirled streams.
4-The most effective sharing percent of combustion air between the
two streams.
5-The most favorable relative angle between the two swirl angles.