Laminar burning velocity of microalgae oil/RP-3 premixed flame at elevated initial temperature and pressure

Liu, Yu; Gu, Wu; Wang, Jinduo; Ma, Haihong; Dong, Nanhang; Zeng, Wen

doi:10.1016/j.fuel.2021.122081

Cited by 11 publications

(2 citation statements)

References 44 publications

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“…They also discovered that when the thermal diffusivity of the mixture grows, the burning velocity also increases, and that the lower the specific heat of the inert gas, the higher the flame temperature and burning velocity of the combination. Liu et al [65] studied the effects of diffusional-thermal and hydrodynamic instability on flame destabilization are exacerbated with hydrogen addition in lean and stoichiometric mixtures. The diffusional-thermal instability has a modest effect on flame destabilization as initial pressure rises, while the consequences of the hydrodynamic instability.…”

Section: Thermal Diffusivity and Specific Heatmentioning

confidence: 99%

Flame Speed and Laminar Burning Velocity in Syngas/Air Mixtures: A Review

Mahdi¹,

Al-Dulaimi²

2022

I2M

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Flame speed and laminar burning velocity (LBV) are important properties of fuel combustion. Both have an impact on how combustion systems are designed and operated. As a result, understanding how LBV and flame speed fluctuate as a function of thermodynamic conditions is critical for understanding the impact of practical applications in all combustion systems. Working pressures and temperatures are far higher than those found in the environment. Several studies on flame speed and LBV have been conducted. This study, however, includes a thorough literature analysis of approaches and procedures used to measure these two parameters, as well as the effects of operational factors for various fuels, with a focus on biofuels, for the sake of review simplicity.

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Section: Thermal Diffusivity and Specific Heatmentioning

confidence: 99%

Flame Speed and Laminar Burning Velocity in Syngas/Air Mixtures: A Review

Mahdi¹,

Al-Dulaimi²

2022

I2M

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“…Vukadinovic et al [7] studied the influences of pressure and temperature on S 0 u and the Markstein number of kerosene Jet A-1 at initial temperatures of 373, 423 and 473 K and initial pressures from 100 to 800 kPa. Several other works [8][9][10], in all of which the initial pressure condition was no less than 100 kPa, also focused on the S 0 u of kerosene and its surrogate fuels.…”

Section: Introductionmentioning

confidence: 99%

Laminar Burning Speed of Aviation Kerosene at Low Pressures

et al. 2022

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Aero-engine combustors may experience extreme low pressures in the case of an in-flight shutdown, which makes the study of aviation kerosene flame propagation characteristics at low pressures important. The present work examined flame propagation during the combustion of aviation kerosene over the pressure range from 25 to 100 kPa using a constant-volume bomb apparatus. The laminar burning speeds at different initial pressures, temperatures and equivalence ratios were measured and compared. In addition, numerical simulations were used to examine the reaction sensitivity of the laminar burning speed at low pressure. In trials at the lean flammability limit, the data indicated that it was more difficult to ignite the fuel under a lower pressure condition of 25 kPa and a lower temperature condition of 420 K. The experimental results of laminar burning speed were fitted to an equation providing the laminar burning speeds expected at different pressures (25–100 kPa), temperatures (400–480 K) and equivalence ratios (0.8–1.5). The temperature index (α=1.76) and pressure index (β=−0.15) of the fitting equation were obtained. Both hydrodynamic and diffusional thermal flame instabilities were found to be suppressed at low pressures. The negative effects of two specific reactions on laminar burning speed were greatly reduced at these same low pressures of 25 kPa.

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