Three characteristic ballistic powder combustion modes with a pressure drop

1977 ◽  
Vol 13 (1) ◽  
pp. 11-14 ◽  
Author(s):  
V. I. Zemskikh ◽  
A. G. Istratov ◽  
O. I. Leipunskii ◽  
V. N. Marshakov
Keyword(s):  
Pressure Drop ◽  
Combustion Modes ◽  
Ballistic Powder ◽  
Powder Combustion

Critical conditions of ballistic powder combustion

1979 ◽  
Vol 15 (1) ◽  
pp. 8-14 ◽  
Author(s):  
I. Ya. Vishnivetskii ◽  
A. P. Denisyuk ◽  
A. E. Fogel'zang
Keyword(s):  
Critical Conditions ◽  
Ballistic Powder ◽  
Powder Combustion

Experimental Study of Surface and Interior Combustion Using Composite Porous Inert Media

2003 ◽  
Author(s):  
T. L. Marbach ◽  
A. K. Agrawal
Keyword(s):  
Experimental Study ◽  
Silicon Carbide ◽  
Pressure Drop ◽  
Carbon Composite ◽  
Flame Stabilization ◽  
Premixed Combustion ◽  
Lean Premixed Combustion ◽  
Combustion Modes ◽  
Porous Inert Media ◽  
Coated Carbon

Combustion using silicon carbide coated, carbon-carbon composite porous inert media (PIM) was investigated. Two combustion modes, surface and interior, depending upon the location of flame stabilization, were considered. Combustion performance was evaluated by measurements of pressure drop across the PIM, emissions of NOx and CO, and the lean blow-off limit. Data were obtained for the two combustion modes at identical conditions for a range of reactant flowrates, equivalence ratios, and pore sizes of the PIM. Results affirm PIM combustion as an effective method to extend the blow-off limit in lean premixed combustion.

scholarly journals Combustion Modes and Unsteady Characteristics during the Condition Transition of a Scramjet Combustor

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2522
Author(s):  
Dongpeng Jia ◽  
Yu Pan ◽  
Ning Wang ◽  
Chaoyang Liu ◽  
Kai Yang
Keyword(s):  
Pressure Drop ◽  
Combustion Process ◽  
Injection Pressure ◽  
Transition Process ◽  
Wall Pressure ◽  
Jet Flame ◽  
Scramjet Combustor ◽  
Combustion Modes ◽  
Flame Development ◽  
Unsteady Characteristics

To investigate the combustion modes and unsteady characteristics during the condition transition of a scramjet combustor, a series of experiments were carried out under the condition of Mach 2.52 supersonic incoming flow, the corresponding stagnation pressure and temperature of which were 1.6 MPa and 1486 K, respectively. A fuel supply system that could dynamically adjust the injection pressure was adopted to simulate the condition transition stage of a scramjet. Based on the advanced combustion diagnosis technique, the transient chemiluminescence image and the wall pressure were recorded during the whole combustion process. Three typical modes of turbulent combustion occurred when the injection pressure drop gradually increased. The jet flame was stable after the condition transition when the injection pressure drop was relatively low. An unstable combustion phenomenon accompanied by intermittent local extinction and reignition could be found near the blowout limits. With a further increase in the injection pressure drop, the flame was blown out quickly during the transition process. In addition, the flame development characteristics during condition transition under stable combustion mode and the effect of injection pressure drop were studied in detail. During the process of switching between the two conditions, the area and light intensity of the flame decreased over time, and the wall pressure was accordingly reduced. As the increase in injection pressure dropped, the intensity of chemical reactions deceased obviously and the transition time became longer.

Experimental Study of Surface and Interior Combustion Using Composite Porous Inert Media

2005 ◽  
Vol 127 (2) ◽  
pp. 307-313 ◽  
Author(s):  
T. L. Marbach ◽  
A. K. Agrawal
Keyword(s):  
Experimental Study ◽  
Silicon Carbide ◽  
Pressure Drop ◽  
Carbon Composite ◽  
Flame Stabilization ◽  
Premixed Combustion ◽  
Lean Premixed Combustion ◽  
Combustion Modes ◽  
Porous Inert Media ◽  
Coated Carbon

Combustion using silicon carbide coated, carbon–carbon composite porous inert media (PIM) was investigated. Two combustion modes, surface and interior, depending upon the location of flame stabilization, were considered. Combustion performance was evaluated by measurements of pressure drop across the PIM, emissions of NOx and CO, and the lean blow-off limit. Data were obtained for the two combustion modes at identical conditions for a range of reactant flowrates, equivalence ratios, and pore sizes of the PIM. Results affirm PIM combustion as an effective method to extend the blow-off limit in lean premixed combustion.

PREDICTION OF PRESSURE DROP THROUGH BAFFLE INJECTOR

2014 ◽  
Vol 24 (3) ◽  
pp. 273-280
Author(s):  
Kyubok Ahn ◽  
Hwan-Seok Choi
Keyword(s):  
Pressure Drop
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