Journal ArticleDOI
Dependence of turbulent burning velocity on turbulent reynolds number and ratio of flaminar burning velocity to R.M.S. turbulent velocity
R.G. Abdel-Gayed,Derek Bradley +1 more
- Vol. 16, Iss: 1, pp 1725-1735
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TLDR
In this paper, the double kernel method was used to measure premixed hydrogen-air turbulent burning velocities, made by four high speed fans within the explosion vessel during explosions.Abstract:
Measurements are reported of premixed hydrogen-air turbulent burning velocities, made by the double kernel method during explosions. Turbulence was created by four high speed fans within the explosion vessel. The method is described for calibrating the system, which is capable of giving high values of turbulent Reynolds numbers. The values obtained are compared with those of many other workers, over a wide range of burning conditions, mixtures and turbulent parameters. The ratio of turbulent to laminar burning velocity correlates well with both the turbulent Reynolds number and the ratio of laminar burning velocity to r.m.s. turbulent velocity. The use of hydrogen-air mixtures has extended the data on premixed turbulent combustion to regimes with higher values of the last dimensionless ratio. At high values of the ratio there is evidence of a wrinkled laminar flame structure, but at lower values a small scale eddy structure seems to be dominant. There is discussion on these findings, which accord with theoretical expectations.read more
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Journal ArticleDOI
Multidimensional numerical simulation of reactive flow in internal combustion engines
TL;DR: A selective review of numerical methods for performing multidimensional simulations of the chemically reactive fluid flow in an internal combustion engine cylinder is given in this paper, with a focus on the major areas of numerical difficulty, their physical origins, and the methods that have been proposed for their amelioration.
Journal ArticleDOI
Stochastic Calculation of Laminar Wrinkled Flame Propagation via Vortex Dynamics
William T. Ashurst,P. K. Barr +1 more
TL;DR: In this article, a Lagrangian-calculated velocity field is combined with Eulerian scalar transport to describe premixed flame propagation in two dimensions and the interaction between time dependent turbulent flow structure and an irreversible one-step decomposition reaction is explored.
Proceedings ArticleDOI
A Simple Model of Unsteady Turbulent Flame Propagation
Andrei Lipatnikov,Jerzy Chomiak +1 more
Journal ArticleDOI
Evaluation of a combustion model for the simulation of hydrogen spark-ignition engines using a CFD code
TL;DR: In this paper, a simple combustion model with few calibration constants, applicable to a wide range of engine configurations, incorporated in an in-house CFD code using the RNG k-ɛ turbulence model, was developed, in order to simulate the power cycle of hydrogen spark-ignition engines.
Journal ArticleDOI
A new correlation for turbulent mass transfer from liquid droplets
Madjid Birouk,Iskender Gökalp +1 more
TL;DR: In this article, a new correlation for mass transfer from single liquid droplets into a turbulent environment was presented, which predicts the vaporization rates of mono and bi-component n -alkane droplets subjected to isotropic turbulence with zero-mean velocity.
References
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Journal ArticleDOI
The burning velocity of methane-air mixtures
G.E. Andrews,Derek Bradley +1 more
TL;DR: In this paper, the variation of burning velocity with equivalence ratio for methane-air mixtures at one atmosphere pressure values were determined by the bombhot wire and corrected density ratio techniques, for combustion during the prepressure period.
DissertationDOI
Investigation of turbulent flow in a two-dimensional channel
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Journal ArticleDOI
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G. J. Gibbs,H. F. Calcote +1 more
Journal ArticleDOI
Investigation of Turbulent Flames
TL;DR: In this paper, a theory of turbulent burning velocity has been developed to explain the production of turbulence by the turbulent flame and a comparison of calculated maximum turbulence intensity values with the turbulence intensities that correspond to the measured turbulent burning•velocity data supports this theory.