Flame Stabilization in the Boundary Layer of Heated Plates

1958 ◽  
Vol 28 (9) ◽  
pp. 592-599 ◽  
Author(s):  
RICHARD W. ZIEMER ◽  
ALI BULENT CAMBEL
Keyword(s):  
Boundary Layer ◽  
Flame Stabilization ◽  
Heated Plates

Effect of boundary-layer removal on high velocity flame stabilization

AIAA Journal ◽  
1964 ◽  
Vol 2 (11) ◽  
pp. 2030-2031
Author(s):  
JAMES R. MAUS ◽  
WILLIAM T. SNYDER
Keyword(s):  
Boundary Layer ◽  
High Velocity ◽  
Flame Stabilization ◽  
Layer Removal

Flame Stabilization in a Boundary Layer

1957 ◽  
Vol 27 (1) ◽  
pp. 28-30 ◽  
Author(s):  
HOYT C. HOTTEL ◽  
TAU-YI TOONG ◽  
JOHN J. MARTIN
Keyword(s):  
Boundary Layer ◽  
Flame Stabilization

scholarly journals The stability of boundary layers on curved heated plates

2002 ◽  
Vol 43 (3) ◽  
pp. 333-358 ◽  
Author(s):  
Jillian A. K. Stott ◽  
James P. Denier
Keyword(s):  
Boundary Layer ◽  
Boundary Layers ◽  
Boundary Layer Flows ◽  
Buoyancy Forcing ◽  
Streamline Curvature ◽  
Layer Flow ◽  
Body Cooling ◽  
The Stability ◽  
Heated Plates ◽  
Stable Flow

AbstractWe consider the effect the competing mechanisms of buoyancy-driven acceleration (arising from heating a surface) and streamline curvature (due to curvature of a surface) have on the stability of boundary-layer flows. We confine our attention to vortex type instabilities (commonly referred to as Görtler vortices) which have been identified as one of the dominant mechanisms of instability in both centrifugally and buoyancy driven boundary layers. The particular model we consider consists of the boundary-layer flow over a heated (or cooled) curved rigid body. In the absence of buoyancy forcing the flow is centrifugally unstable to counter-rotating vortices aligned with the direction of the flow when the curvature is concave (in the fluid domain) and stable otherwise. Heating the rigid plate to a level sufficiently above the fluid's ambient (free-stream) temperature can also serve to render the flow unstable. We determine the level of heating required to render an otherwise centrifugally stable flow unstable and likewise, the level of body cooling that is required to render a centrifugally unstableflow stable.

Boundary Layer Flame Stabilization

1955 ◽  
Vol 25 (6) ◽  
pp. 288-290 ◽  
Author(s):  
ROBERT A. GROSS
Keyword(s):  
Boundary Layer ◽  
Flame Stabilization

Further study on flame stabilization in a boundary layer: A mechanism of flame oscillations

1963 ◽  
Vol 9 (1) ◽  
pp. 49-58
Author(s):  
R.M. Pristrom ◽  
C.S. Tarifa ◽  
W.S. Wu ◽  
T.Y. Toong
Keyword(s):  
Boundary Layer ◽  
Flame Stabilization

Flame Holding and Combustion Characteristics of a Geometrical Flame Holder

2008 ◽  
Author(s):  
K. A. Ahmed ◽  
D. J. Forliti
Keyword(s):  
Boundary Layer ◽  
High Speed ◽  
Equivalence Ratio ◽  
Recirculation Zone ◽  
Combustion Products ◽  
Flame Stabilization ◽  
Combustion Characteristics ◽  
Bluff Bodies ◽  
Trailing Edge ◽  
Flame Holder

Flame Stabilization in a high-speed premixed environment requires the presence of a mechanism to stabilize the flame. Bluff bodies or geometrical flame holders introduce a recirculation zone that anchor the flame. The current study considers the influence of equivalence ratio and the boundary layer state at the trailing edge of the flame holder on the flowfield and combustion characteristics. It was found that the recirculation zone is shortened as the equivalence ratio increases towards unity. A secondary shear region emerges downstream of the recirculation zone and is caused by the accelerated low-density combustion products. The emergence of the secondary shear region moves upstream with increasing equivalence ratio. Tripping the boundary layer causes a dramatic reduction in the length of the recirculation zone, and the secondary shear region is greatly augmented. Visualizations show that tripping the boundary layer resulted in a greatly disturbed flame near the trailing edge and large flame scales. Flowfield measurements suggest that the heat release is increased by approximately 50% when the boundary layer tripped.

Effects of continental boundary layer evolution, convection, turbulence and entrainment, on aerosol formation

Tellus B ◽  
2001 ◽  
Vol 53 (4) ◽  
pp. 441-461 ◽  
Author(s):  
E. D. NILSSON ◽  
Ü. RANNIK ◽  
M. KULMALA ◽  
G. BUZORIUS ◽  
C. D. O'DOWD
Keyword(s):  
Boundary Layer ◽  
Aerosol Formation
Sign in / Sign up

Export Citation Format

Share Document