Electrostatic fields for the control of evaporating charged fuel sprays

Fredrich, Daniel; Weiand, Erik; Giusti, Andrea

doi:10.1016/j.ijmultiphaseflow.2022.104312

Cited by 4 publications

(1 citation statement)

References 39 publications

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“…Moreover, the ambient temperature had a significant effect on the spray evaporation of both pure diesel and IBE/diesel blends, with an increase in temperature resulting in smaller spray streams [38]. To enhance the pre-evaporation of liquid spray in confined spaces, electrostatic fields to control the location of electrically charged droplets of fuel have been studied [39]. Pre-evaporation pulse combustion using a porous medium burner is an additional method for enhancing liquid biofuel utilization.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation and Comparison Between Internal and External Liquid Biofuel Pre-Evaporation in Micro Gas Turbine Chamber

Mohammed R. Abdulwahab,

Khaled Ali Al-attab Al-attab,

Mohamad Yusof Idroas

2023

CFDL

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Due to the current global crises related to fossil fuels (prices up and sources shortage) and in order to diminish the remnants and the negative effects of harmful gas emission (CO and NOx), the fielded researchers and academics try to find alternative source of fossil fuel. Bio fuels consider one of promised source of clean energy. Palm vegetable oil widely separated in Malaysia which considered one of dominant production of this oil globally. Atomization and evaporation radically represent a challenge when using liquid fuel especially fuels with high viscosity and density which is not easy to atomize and evaporate without pre-heating or blende it. A numerical investigation has been proposed to do comparison between two different external evaporative chamber and internal evaporation without using conventional liquid fuel evaporation methods. Findings revealed that both configurations have a good performance in term of emission concentrations and turbine inlet temperature (TIT) which was about 899 C with chamber using internal recycle tube evaporation with CO emission about 183 ppm with outer pre-evaporation chamber. Chamber with internal evaporation was chosen due to technical and fabrication reasons. Besides that, a six different inlet and exhaust ducting ports tested with the chosen chamber with internal recycle tube evaporation chamber, all configurations revealed a non-symmetrical flame flow near chamber exhaust which is not desirable as it will cause turbine unstable operation. The configuration with square duct exhaust was suitable with stable and symmetric flame flow field and slight small CO emission about 312 ppm.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation and Comparison Between Internal and External Liquid Biofuel Pre-Evaporation in Micro Gas Turbine Chamber

Mohammed R. Abdulwahab,

Khaled Ali Al-attab Al-attab,

Mohamad Yusof Idroas

2023

CFDL

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Fuel effects on the electrostatic control of charged droplet trajectories

Giusti,

Fredrich

2024

Fuel

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Numerical study of electrohydrodynamic atomization considering liquid wetting and corona discharge effects

Ngoc

Dinh³

et al. 2023

Physics of Fluids

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In this paper, the behavior of the cone-jet mode of fluid by electrohydrodynamic atomization (electrospray) is numerically simulated and investigated with the effect of liquid wetting and corona discharge effects. The simulation was performed with contact angle condition to fit the Taylor cone shape by experiments. Experimental data are provided to verify and validate the numerical method, followed by additional analyses on the effects of electrical conductivity, surface tension, flow rate, and fluid viscosity on the electrospray characteristics, including spray current and jet diameter. Numerical results by simulations are in reasonable agreement with experiments and consistent with the literature. Analyses on different contact angles suggest potentially major impacts of this factor on the cone-jet mode in high voltage and low flow rate circumstances. Furthermore, the influence of corona discharge on electrospray is also investigated by both electrospray–corona simulation and experiment using a high-speed camera, yielding a significant improvement in the numerical prediction for Taylor cone formation. Numerical results indicate that liquid wetting on capillary nozzles would be a vital factor for the Taylor cone formation in numerical electrospray–corona discharge studies.

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Electrostatic fields for the control of evaporating charged fuel sprays

Cited by 4 publications

References 39 publications

Numerical Investigation and Comparison Between Internal and External Liquid Biofuel Pre-Evaporation in Micro Gas Turbine Chamber

Numerical Investigation and Comparison Between Internal and External Liquid Biofuel Pre-Evaporation in Micro Gas Turbine Chamber

Fuel effects on the electrostatic control of charged droplet trajectories

Numerical study of electrohydrodynamic atomization considering liquid wetting and corona discharge effects

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