Influence of Preheat Temperature on the Laminar Burning Velocity of Methane-Air Mixtures

Kurata, Osamu; Takahashi, Sanyo; Uchiyama, Yoshitada

doi:10.4271/942037

Cited by 6 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be seen that the predicted values of this study in the high-tempera-ratio of burning velocities as a function of temperature for various pressures. Using this ratio, the burn-ture range are comparable to the measured values of Kurata et al [61], Iijima and Takeno [34] and Sharma ing velocity of the methane±air mixture can be estimated for higher temperatures than those for et al [62], as well as the computed results of Gottgens et al [63]. It is also evident that the predicted values which measurements can be made.…”

Section: Resultssupporting

confidence: 83%

Burning velocity measurements of methane-oxygen-argon mixtures and an application to extend methane-air burning velocity measurements

Rahim

Elia

Ulinski

et al. 2002

International Journal of Engine Research

View full text Add to dashboard Cite

Burning velocities of methane-oxygen-argon mixtures have been measured in two matched constant-volume chambers, one spherical and one cylindrical. Burning velocities in the spherical chamber were determined from the pressure rise using a thermodynamic model based on the conservation of mass and energy. Photographic observations made through end windows in the cylindrical chamber at early times were used to study the effects of flame curvature and stretch on the flame speed under constant pressure conditions. The cylindrical chamber was also used to investigate flame shape, cracking and wrinkling. Substitution of argon for the nitrogen in air increased the range of pressure and temperature at which measurements could be made. A correlation for the burning velocity of methane-oxygen-argon mixtures has been developed for the range of pressures from 1 to 40 atmospheres, unburned gas temperatures from 298 to 650 K and fuel-air equivalence ratios from 0.8 to 1.2. Using this correlation and previous results for methane-air mixtures, the burning velocities of methane-air mixtures have been extended to higher temperatures. The results are compared to other experimental measurements and theoretical predictions.

show abstract

Section: Resultssupporting

confidence: 83%

Burning velocity measurements of methane-oxygen-argon mixtures and an application to extend methane-air burning velocity measurements

Rahim

Elia

Ulinski

et al. 2002

International Journal of Engine Research

View full text Add to dashboard Cite

show abstract

“…Many studies (e.g., refs , , − ) present measurements of laminar flame velocities of methane at 298 K above atmospheric pressures. Figure shows that our measurements at 1.5, 2, and 3 atm are in very good agreement with those of Goswami et al obtained using the same heat flux method.…”

Section: Resultsmentioning

confidence: 99%

Measurements of Laminar Burning Velocities above Atmospheric Pressure Using the Heat Flux Method—Application to the Case of n-Pentane

et al. 2015

View full text Add to dashboard Cite

A new adiabatic burner allowing the measurement of burning velocities at high pressure with the heat flux method has been developed. Experimental measurements of laminar burning velocities of methane and n-pentane were performed for pressures up to 6 atm at 298 K and at atmospheric pressure for temperatures from 298 to 398 K. Equivalence ratios varied from 0.6 to 1.9. The results for methane flames are in good agreement with the only results of literature obtained above atmospheric pressure using the heat flux method; those for n-pentane are to our knowledge the first application of this method to a flame of a liquid fuel above atmospheric pressure. Based on these measurements, empirical correlations of the variation of the measured laminar flame velocities with pressure and temperature have been proposed for methane and n-pentane. In the case of methane, these correlations lead to a satisfactory prediction of literature measurements made using constant volume bombs.

show abstract

“…The laminar burning velocity is a strong function of the initial temperature and a weak function of pressure . Kurata et al measured the burning velocity of methane−air mixtures at different initial temperatures and pressures and concluded that the burning velocity was highly dependent on the temperature but not so on pressure. This is reinforced by Jerzembeck and Peters at elevated pressures (1.0−2.5 MPa).…”

Section: Introductionmentioning

confidence: 99%

Laminar Burning Velocities of 2,5-Dimethylfuran Compared with Ethanol and Gasoline

et al. 2010

View full text Add to dashboard Cite

The 2,5-dimethylfuran (DMF) has attracted renewed global interest since its improved production methods were published in Nature and Science in 2007. Its high energy density makes it a promising biofuel and a possible alternative to gasoline. Consequently, a series of studies, led by the University of Birmingham, aims to assess the potential of DMF as an automotive energy carrier. These studies will include an analysis of the spray properties, the laminar flame characteristics, the engine performance, and the subsequent emissions. This paper examines the laminar flame characteristics from a quiescent homogeneous air−fuel mixture. The experiments were conducted using a constant volume vessel and were recorded by high speed schlieren visualization. By measurement of the flame growth following ignition, the laminar flame speed was determined. The calculation of flame stretch yielded the Markstein lengths and the laminar burning velocities. This paper presents the results of DMF combustion for a range of equivalence ratios (0.6−2.0) and initial temperatures (50−100 °C). The flame performance when using DMF is compared to EN228 gasoline and to the most commonly used biofuel substitute for gasoline, ethanol. The data shows that ethanol has the highest laminar burning velocity, followed by gasoline, and then DMF. In the 0.9−1.1 equivalence ratio range, the laminar burning velocity of DMF was very similar to gasoline and the difference was within 10%.

show abstract

Influence of Preheat Temperature on the Laminar Burning Velocity of Methane-Air Mixtures

Cited by 6 publications

References 3 publications

Burning velocity measurements of methane-oxygen-argon mixtures and an application to extend methane-air burning velocity measurements

Burning velocity measurements of methane-oxygen-argon mixtures and an application to extend methane-air burning velocity measurements

Measurements of Laminar Burning Velocities above Atmospheric Pressure Using the Heat Flux Method—Application to the Case of n-Pentane

Laminar Burning Velocities of 2,5-Dimethylfuran Compared with Ethanol and Gasoline

Contact Info

Product

Resources

About