High pressure laminar burning velocity measurements and modelling of methane and n-butane

Marshall, Stephen P.; Stone, Richard; Hegheş, Crina; Davies, Trevor J.; Cracknell, Roger

doi:10.1080/13647830.2010.500021

Cited by 29 publications

(21 citation statements)

References 26 publications

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“…The combustion bomb for this work is the same as described elsewhere [18,19,20]. The constant volume bomb shown in Fig.…”

Section: Experimental Apparatusmentioning

confidence: 99%

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Laminar burning velocity measurement of hydrous methanol at elevated temperatures and pressures

Liang

Stone

2017

Fuel

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“…The combustion bomb for this work is the same as described elsewhere [18,19,20]. The constant volume bomb shown in Fig.…”

Section: Experimental Apparatusmentioning

confidence: 99%

“…The experimental procedure was similar to [18,19,20] apart from using a digital balance with 0.1 mg resolution to measure the mass of liquid fuel injected. The fuel was injected using a Hamilton precision syringe with a motorised actuator, and the mass was measured before and after injection.…”

Section: Fig 1 Schematic Of the Constant Volume Combustion Bomb Withmentioning

confidence: 99%

Laminar burning velocity measurement of hydrous methanol at elevated temperatures and pressures

Liang

Stone

2017

Fuel

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“…To validate the measured data, Figure compares the unstretched laminar flame speed

S_{normall, 0}

deduced from the present work with those from the literature by using different methods (e.g., heat flux burner) . The measurement data in this figure are for methane/air mixtures at different equivalence ratios, with an initial temperature of 300 K and initial pressure of 0.1 MPa.…”

Section: Experimental and Numerical Setupsmentioning

confidence: 99%

“…[27][28][29][30][31][32][33][34][35] Them easurement data in this figure are for methane/air mixtures at different equivalence ratios,w ith an initial temperature of 300 Ka nd initial pressure of 0.1 MPa. The dashed line depicts apolynomial fit of fifth order of all measured data, together with a9 8% confidence bound (dotted line).…”

Section: Experimental and Numerical Setups Experimental Setupmentioning

confidence: 99%

Impact of Infinite Thin Flame Approach on the Evaluation of Flame Speed using Spherically Expanding Flames

et al. 2017

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Combustion is an important part of most current and future overall energy‐conversion systems, especially if using renewable fuels in energy‐storage concepts. Therefore, the laminar flame speed, which is a key parameter for the design of combustion systems, needs to be known for a growing multitude of different thermodynamic conditions and fuels. The spherically expanding flame method is one of the few techniques that enables the flame speed to be measured under particular conditions such as elevated pressure and temperature as well as under turbulent conditions, which are important for energy‐conversion applications. The radius of a spherically propagating flame is tracked and used for evaluation of the flame speed. Usually, the flame is assumed to be infinitely thin. To assess the influence of this assumption, direct numerical simulations were conducted for the experimental setup and compared with measurements and correlations from the literature. The flame speed determined by the consumption rate of fuel, which takes a finite thickness of the flame into account, was found to be always larger than the flame speed computed by assuming an infinitely thin flame. The difference between these flame speeds was observed to be as large as approximately 10–20 % in the evaluation range of the measured flame radii, which decreases with growing flame radius. This gives rise to the discrepancies in the flame speeds obtained from different measurement methods. An analytical estimation for this difference was developed as a function of the flame radius, which showed quantitatively good agreement with the simulation results and may be used for experimental validations of the flame speed. Both premixed H2/air and CH4/air flames with equivalence ratios ranging from lean to rich conditions were studied.

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“…Biogas-air mixture could be considered as methane-air mixture diluted by CO 2 . Laminar burning velocity in this case is presented in [16]. Thus, with a given cylinder pressure, mixture temperature, and composition of biogas, we can calculate laminar burning velocity.…”

Section: Introductionmentioning

confidence: 99%

Turbulent burning velocity in combustion chamber of SI engine fueled with compressed biogas

Đông

Hung

2015

Vietnam J. Mech.

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Abstract. Turbulent burning velocity is the most important parameter in analyzing premixed combustion simulation of spark ignition engines. It depends on the laminar burning velocity and turbulence intensity in the combustion chamber. The first term can be predicted if one knows fuel composition, physico chemical properties of the fluid. The second term strongly depends on the geometry of the combustion chamber and fluid movement during the combustion process. One cannot suggest a general expression for different cases of engine. Thus, for accuracy modeling, one should determine turbulent burning velocity in the combustion chamber of each case of engine individually. In this study, the turbulent burning velocity is defined by a linear function of laminar burning velocity in which the proportional constant is defined as the turbulent burning velocity coefficient. This coefficient was obtained by analyzing the numerical simulation results and experimental data and this is applied to a concrete case of a Honda Wave motorcycle engine combustion chamber that fueled with compressed biogas. The results showed that the turbulent burning velocity coefficient in this case is around 1.3 when the average engine revolutions is in the range of 3000 rpm to 6000 rpm with biogas containing 80% Methane. We can then predict the effects of different parameters on the performance of the engine fueled with compressed biogas by simulation.

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High pressure laminar burning velocity measurements and modelling of methane and n-butane

Cited by 29 publications

References 26 publications

Laminar burning velocity measurement of hydrous methanol at elevated temperatures and pressures

Laminar burning velocity measurement of hydrous methanol at elevated temperatures and pressures

Impact of Infinite Thin Flame Approach on the Evaluation of Flame Speed using Spherically Expanding Flames

Turbulent burning velocity in combustion chamber of SI engine fueled with compressed biogas

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