Extraction of ions from a flame

Deckers, J.; Tiggelen, A. van

doi:10.1016/0010-2180(57)90014-7

Cited by 34 publications

(13 citation statements)

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“…The study of ions in flames has a long history [1,2], whereas, the use of mass spectrometers to identify the positive and negative ions present, dates from around 1957 [3,4]. The general topic of ionisation in flames has been reviewed many times [1,[5][6][7][8], and one important aspect of the subject has been the direct and continuous sampling of a flame into a mass spectrometer to investigate the ions present [9,10].…”

Section: Introductionmentioning

confidence: 99%

The effects of applying electric fields on the mass spectrometric sampling of positive and negative ions from a flame at atmospheric pressure

Hayhurst

Goodings

Taylor

2014

Combustion and Flame

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Section: Introductionmentioning

confidence: 99%

The effects of applying electric fields on the mass spectrometric sampling of positive and negative ions from a flame at atmospheric pressure

Hayhurst

Goodings

Taylor

2014

Combustion and Flame

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“…Flame chemi-ionization mechanisms have been studied extensively since early 1950s [14,15] . Based on these previous fundamental studies, several flame ionization mechanisms were recently developed for the CFD analyses.…”

Section: Introductionmentioning

confidence: 99%

A skeletal gasoline flame ionization mechanism for combustion timing prediction on HCCI engines

Dong

Chen

et al. 2017

Proceedings of the Combustion Institute

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Ion current sensing technology has the potential to be a low cost and real time combustion phasing solution for HCCI or HCCI-like engine control. Based on a primary reference fuel oxidation mechanism and a C1-C4 hydrocarbon flame ionization mechanism, a skeletal mechanism for gasoline flame ionization process prediction on HCCI engines was developed in this paper. Since the ion concentrations significantly affect the aroused ion current signals, the mechanism is targeted on accurately predicting both the ion production concentrations and other key combustion characteristics. Through the comparison with the results from the detailed gasoline flame ionization mechanism and experimental results, the predicted maximum hydronium (H 3 O + ) ion concentration and the concentration variation tendency are validated. Additionally, the auto-ignition delay time ( t ign ) accurately predicted under HCCI engine conditions. Through coupling with a 3D-CFD engine model, the skeletal mechanism was applied to predict the important information of incylinder ion species, which are validated by the experimental ion current amplitudes and phases. The results show that the ion current phase (Ion50) matches well with the positions where the predicted ion concentration reaches its maximum, and the ion current amplitudes are well predicted under the conditions of different equivalence ratios ( ) and fuel injection ratios ( Inj ratio ).

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“…The methodology and apparatus used for investigation of charged species in flames were also discussed. Calcote, [11] discussed and reviewed ions formation in flames whereas ions in flames were investigated by several researchers [12][13][14][15]. The electron concentrations of hydrocarbons, esters, alcohols, ethers and ketones flames at reduced pressure were studied by Bulewicz and Padley [16].…”

Section: Introductionmentioning

confidence: 99%

2-D numerical modeling of flame behavior under electric field effect

Asfar¹,

Alkhalil²,

Sakhrieh³

et al. 2018

IJHT

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In this work, premixed turbulent combustion of methane under the effect of the electric field was simulated using Ansys /Fluent with Gri-mech 1.2. The simulation included Ionic species and NO formation. The combustion simulation without electric field was done first to validate the mathematical model for laminar combustion. It was found that flame conic shape and adiabatic flame temperature agree with the results of previously published work. The combustion simulation of the flame under electric field effect, includes modeling of the electric field equation, which was implemented in Fluent using user-defined sources (UDS) coupled with user-defined functions (UDFs). It was found that H3 O + and CHO + species are consumed immediately after their production as a result of electric field effect. On the other hand, the flame stability was enhanced. Emitted pollutants were minimized with a little reduction in CO concentration, which agrees with previously published experimental work.

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Extraction of ions from a flame

Cited by 34 publications

References 0 publications

The effects of applying electric fields on the mass spectrometric sampling of positive and negative ions from a flame at atmospheric pressure

The effects of applying electric fields on the mass spectrometric sampling of positive and negative ions from a flame at atmospheric pressure

A skeletal gasoline flame ionization mechanism for combustion timing prediction on HCCI engines

2-D numerical modeling of flame behavior under electric field effect

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