An experimental study on the spray characteristics of the air-blast atomizer

Ma, Rui; Dong, Bo; Yu, Zhongqiang; Zhang, Tao; Wang, Yong; Li, Weizhong

doi:10.1016/j.applthermaleng.2014.11.068

Cited by 47 publications

(8 citation statements)

References 7 publications

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“…The results showed that the droplet size was the smallest in the spray center area and gradually increased in the external area and that the droplet size decreased with increases in the axial distance of the impact point. Ma et al [ 16 ] used laser-induced fluorescence and particle image velocimetry to study the characteristics of two different mixing forms of air atomization nozzles. The results showed that the gas phase pressure obviously influenced the atomization cone angle of the nozzle, the change of the cone angle mainly depended on the mixing form, and the particle velocity was mainly affected by the gas pressure.…”

Section: Introductionmentioning

confidence: 99%

Measuring Liquid Droplet Size in Two-Phase Nozzle Flow Employing Numerical and Experimental Analyses

et al. 2022

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The flavoring process ensures the quality of cigarettes by endowing them with special tastes. In this process, the flavoring liquid is atomized into particles by a nozzle and mixed with the tobacco in a rotating drum. The particle size of the flavoring liquid has great influence on the atomization effect; however, limited research has addressed the quantitation of the liquid particle size in two-phase nozzle flow. To bridge this research gap, the authors of this study employed numerical and experimental techniques to explore the quantitative analysis of particle size. First, a simulation model for the flavoring nozzle was established to investigate the atomization effect under different ejection pressures. Then, an experimental test is carried out to compare the test results with the simulation results. Lastly, the influencing factors of liquid particle size in two-phase nozzle flow were analyzed to quantify particle size. The analysis results demonstrated that there was a cubic correction relationship between the simulation and experiment particle size. The findings of this study may provide a reliable reference when evaluating the atomization effect of flavoring nozzles.

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Section: Introductionmentioning

confidence: 99%

Measuring Liquid Droplet Size in Two-Phase Nozzle Flow Employing Numerical and Experimental Analyses

et al. 2022

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“…Atomization is the breakup of bulk liquid into small droplets using an atomizer or spray [9,10]. Atomizers are generally classified into pressure atomizers, air-blast atomizers, air-assist atomizers, pressure-swirl atomizers, twin-fluid atomizers, rotary atomizers, ultrasonic atomizers, whistle atomizers and electrostatic atomizers [11,12]. In gas turbines, the combustion efficiency is affected by the efficacy of the atomization process, which is designs by the various kinds of atomizers determined.…”

Section: Introductionmentioning

confidence: 99%

Application of Ultrasonic Atomization on a Micro Jet Engine Using Biofuel for Improving Performance

Alajmi

Alrashidi

et al. 2021

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Jet engines are commonly used in aeronautical applications, and are one of the types of gas turbine engines. The circulation of air releases heat energy to expand the volume of hot fluids and impact the turbine wheel to generate power of hot gases. The present study investigates the potential of using ultrasonic atomization technology to assist in the combustion process. An experimental rig was set up to determine the performance of jet engines using ultrasonic droplets. A gas analyzer was used to measure various greenhouse emissions of exhaust gas. The performance of the engine was tested under three load levels (high, medium, low), starting from 10 psi at a steady state, to the minimum value. A significant result was tested for a low value of nitrogen monoxide at the three levels of load, and a specific result was tested for an efficiency value of 2% at the three levels of load. Carbon dioxide was found to decrease at the low load level. The use of an ultrasonic atomization device to assist in the combustion process was useful in achieving engine efficiency of 1% and a reduction of 25% in carbon dioxide exhaust gas.

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“…Atomization is the fragmentation of bulk liquid, so it gets into small droplets by using a spray or atomizer . Atomizers are generally categorized into pressure atomizer, pressure swirl atomizer, air‐blast atomizer, air‐assist atomizers, twin‐fluid atomizer, rotary atomizer, ultrasonic atomizers, whistle atomizers, and electrostatic atomizer . Different types of atomizers will determine the efficacy of the atomization process, which adversely affects the combustion efficiency in a gas turbine engine.…”

Section: Introductionmentioning

confidence: 99%

Fuel atomization in gas turbines: A review of novel technology

et al. 2019

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Summary The atomization of fuel is crucial in the combustion and emission of a gas turbine, and the fuel atomization is continuous without any cycles or strokes. However, to achieve a desired amount of combustion during this continuous process, fuel must be added and mixed with the high‐pressure air exiting the compressor in proper proportions. To make the engine as small and lightweight as possible is a constraint and requires the fuel injection, mixing, and combustion to occur within the smallest volume possible. In most cases, this is inefficient and less practicable. A major drawback is the requirement of high injection pressure with relatively small increase in flow rate. In recent years, research was conducted to improve fuel atomization in a gas turbine by using different novel approaches that were simpler, more adaptable, and efficient to enhance the atomization. However, most of these studies were in isolation without any comprehensive literature on recent trends. Therefore, this review attempts to give an insight on recent development of fuel atomization in a gas turbine. Particular emphasis was given to air‐, plasma‐, ultrasound‐, and supercritical fluid–assisted atomization techniques.

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An experimental study on the spray characteristics of the air-blast atomizer

Cited by 47 publications

References 7 publications

Measuring Liquid Droplet Size in Two-Phase Nozzle Flow Employing Numerical and Experimental Analyses

Measuring Liquid Droplet Size in Two-Phase Nozzle Flow Employing Numerical and Experimental Analyses

Application of Ultrasonic Atomization on a Micro Jet Engine Using Biofuel for Improving Performance

Fuel atomization in gas turbines: A review of novel technology

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