1995
DOI: 10.2514/3.23868
|View full text |Cite
|
Sign up to set email alerts
|

Controlling mechanisms of ignition of solid fuel in a sudden-expansion combustor

Abstract: Ignition of solid fuel by a hot oxidizing flow in a sudden-expansion combustor was investigated experimentally. The controlled variables of the experiments were concentration of oxygen (12-25%), gas temperature (750-850°C), and flow velocity (19-46 m/s). The step height was 29 mm. The corresponding Reynolds numbers based on the flow velocity and the step heights were 12 x 10 4 -31 x 10 4 . The controlling mechanisms of ignition in the flow with abundant oxygen were distinct from those with little oxygen. The i… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2

Citation Types

0
2
0

Year Published

2009
2009
2017
2017

Publication Types

Select...
5

Relationship

0
5

Authors

Journals

citations
Cited by 12 publications
(2 citation statements)
references
References 8 publications
(8 reference statements)
0
2
0
Order By: Relevance
“…Various flow patterns are involved, including corner eddy, recirculation vortex, shear layer, reattachment zone, and re-developing boundary layer. By incorporating additional fluid transpiration from the bottom wall downstream the backstep, the flow may either simulate the pyrolysis of solid fuel in an axial dump combustor (Richarson et al [6]; Yang and Wu [7]), or serve as an efficient cooling approach that protects the wall from the hot inlet stream. The injected flow not only carries positive momentum into the reverse stream of the recirculation vortex, but also induces a favorable pressure gradient to counteract the adverse one downstream the backstep.…”
Section: Introductionmentioning
confidence: 99%
“…Various flow patterns are involved, including corner eddy, recirculation vortex, shear layer, reattachment zone, and re-developing boundary layer. By incorporating additional fluid transpiration from the bottom wall downstream the backstep, the flow may either simulate the pyrolysis of solid fuel in an axial dump combustor (Richarson et al [6]; Yang and Wu [7]), or serve as an efficient cooling approach that protects the wall from the hot inlet stream. The injected flow not only carries positive momentum into the reverse stream of the recirculation vortex, but also induces a favorable pressure gradient to counteract the adverse one downstream the backstep.…”
Section: Introductionmentioning
confidence: 99%
“…Except the research in Ref. [8][9][10][11][12][13], literatures dedicated to the phenomena of solid fuel ignition within the sudden-expansion combustors are rare. A review of the fundamentals for solid propellant ignition may be referred to [14], in which the ignition were categorized into the head-end and aft-end modes.…”
Section: Introductionmentioning
confidence: 99%