The flame stability limit, which was involving the critical flow condition, lift off and blow out, could be affected by the burner geometry in the combustion system installation. Consequently a flame holder should be put in, to hold the flame as big as possible on a stable condition. The flame holder itself, is a device to hold the flame, whereas the flame holder could disturb the air and fuel ...

the present paper compares full kinetics mechanisms in numerical modelling of porous radiant burners (prb), with their reduced forms. the two most frequently used mechanisms of methane combustion (gri3.0 and miller) were selected and their effects were examined on temperature, species concentration, burning speed, and pollutant emission. while the findings of numerical simulation of prb show fi...

Fluctuations in the fuel flow rate may occur practical combustion systems and result flame destabilization. This is particularly problematic lean ultralean modes of burner operation. In this study, response a ceramic porous to fluctuations different blends methane hydrogen investigated experimentally. Prior injection into burner, blend premixed with air at equivalence ratios below 0.275. The st...

A tunable excimer laser at 248 nm (KrF) and 193nm (ArF) has been used to monitor two-dimensional OH and NO distributions in the turbulent flame of a 100 kW natural gas burner. Spatially resolved fluorescence (spatial resolution better than 1.0 mm) from a 20 cm x 20 cm area is collected under single shot conditions. We describe the problems encountered when laser-induced fluorescence imaging tec...

In this paper is presented the analysis of the dynamics flow gas and the temperature distribution into a burning chamber with two identical burners on methan as result of heat density variation of one of them. Key-Words: methan combustion, burner, Finite Element Method, FLUENT.

The Jing Ltd. miniature combustion aerosol standard (Mini-CAST) soot generator is a portable, commercially available burner that is widely used for laboratory measurements of soot processes. While many studies have used the Mini-CAST to generate soot with known size, concentration, and organic carbon fraction under a single or few conditions, there has been no systematic study of the burner ope...

The dynamics of major flow structures were studied in a gas turbine model combustor for perfectly premixed swirlstabilized flames under a variety of reacting and non-reacting conditions using high-repetition-rate laser diagnostics. The studied combustor is a target case for the International Workshop on Advanced Measurement Techniques and Computational Methods for Premixed and Partially Premixe...