Observation on dynamic behavior of droplets evaporation after the end-of-injection of diesel spray

Nawi, M. A. M.; Kidoguchi, Yoshiyuki; Izamshah, R.; Kasim, Mohd Shahir; Khor, C. Y.; Jamalludin, Mohd Riduan; Rahim, Wan Mohd Faizal Wan Abd; Rosli, M. U.

doi:10.1063/1.5066650

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…The spray drying process has been considered as a possible method for drying concentrated brines produced for water recovery in the space life support system [1]. The simple principle is used by fine spraying a liquid into a hot gas stream, evaporating and drying in-flight droplets, and separating and collecting solid particles from the gas stream [2,3]. The process is very quick, and the contact with the production-gas is concise.…”

Section: Thermal Degradation In Spray Dryingmentioning

confidence: 99%

Effect of Nozzle Diameter on Temperature Behavior in Spray Dryer Via Computational Fluid Dynamics

Alias

Sarip

Mustafa

et al. 2021

Lecture Notes in Electrical Engineering

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Spray dryer comes at the end of the processing line since it is a critical step in monitoring the quality of the final product. It has certain advantages such as rapid drying rates, a wide range of operating temperatures and short residence times. This research focuses on the effect of inlet air temperature in the spray dryer chamber. The result from previous studies has shown that the increment of the inlet air temperature has caused the dying rate to increase. From the simulation, we have identified the performance in the spray dryer with different inlet air temperature as the parameter. The higher the inlet air temperature, the less the number of incomplete particles inside the spray dryer chamber, the more the success of the drying particles. The most optimized condition of inlet air temperature inside the spray dryer chamber from different parameters was identified as 225 K after the analysis on the results of simulation data. The main impact of this study is to increase the efficiency of drying particles inside the spray dryer chamber via computational fluid dynamics. In conclusion, researchers should concentrate more on the feed inlet air temperature of spray drying for future analysis because it plays an important role that can influence the impact on droplet conversion.

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Section: Thermal Degradation In Spray Dryingmentioning

confidence: 99%

Effect of Nozzle Diameter on Temperature Behavior in Spray Dryer Via Computational Fluid Dynamics

Alias

Sarip

Mustafa

et al. 2021

Lecture Notes in Electrical Engineering

Self Cite

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“…The advantages of the spray drying technique include the ability to manufacture powders of particular particle size and moisture content, regardless of the dryer capability [4]. The size of the particles formed, and the patterns of suspension flow and liquid atomization can affect the spray drying chamber design [5,6]. For larger particles it is necessary to take into account the settling velocity of the particle, whereas the fine particles which obey the gas stream, thus the aerodynamic phenomenon in the drying chamber may be crucial.…”

Section: Spray Dryingmentioning

confidence: 99%

Influence of Nozzle Diameter Towards Velocity Distribution in Spray Dryer Via Computational Fluid Dynamics

Alias

Sarip

Nawi

et al. 2021

Lecture Notes in Electrical Engineering

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Spray drying is commonly used in the chemical and food industries and is the preferred drying process for many materials, such as dairy products, foods, pharmaceuticals, polymers, etc. This research focuses on the effect of the nozzle diameter in the spray drying region against velocity distribution. The results from previous studies have shown that CFD can be a useful tool for predicting the pattern of gas flow and particle histories such as temperature, velocity, time of residence and place of effect. The predictions from these model were validated against reported experimental results, and other simulations. From the simulation analysis, the present studies have identified the performance in the spray dryer through with different size of spray nozzle diameter as the parameter. For the nozzle diameter part, the smaller the spray nozzle diameter, the higher the velocity of the droplets with beneficial to the thermal efficiency of drying particles. The statements finding from the simulation of nine different case study with different nozzle diameter found that the higher velocity has been identified in simulation results due to incomplete vaporize droplets. The main impact of this study is to identify the most optimized condition of the spray dryer chamber after the analysis of the results of simulation data. In conclusion, the

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“…Wall film during spray impinging can be quantitatively measured using laser-induced fluorescence and Mie scattering methods, and film thickness has been measured using low-speed refractive index matching in a constant volume chamber [2,3]. Recently, impinging spray characteristics, including impinging distance, wall angle, wall temperature, injection pressure, and fuel mass, have been fully investigated [4][5][6][7][8][9][10]. Adjusting the injection parameters is the common way to improve the fuel atomization quality.…”

Section: Introductionmentioning

confidence: 99%

Thermal Load Analysis of Piston Damaged by Wall-Wetting Combustion in a Heavy-Duty Diesel Engine

Li,

et al. 2023

Sustainability

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Piston damage is a frequent problem of engine durability and plays an important role in an engine’s performance design. Recently, a large amount of piston erosion has occurred in a series of heavy-duty diesel engines. To investigate the reason for the piston erosion, a study of the computational fluid dynamics (CFD) of the combustion process in the cylinder and finite element analysis (FEA) of piston was carried out under different initial temperatures. The results show that when the initial temperature decreases from 380 K to 307 K, the mass of wall-wetting increases by 73%, and the maximum combustion pressure increases from 8.1 MPa to 11 MPa; when the initial temperature decreases from 350 K to 328 K, the highest temperature at the throat of the valve pocket increases by nearly 100 K, doubling the temperature fluctuation; and in the case of 328 K, areas exceeding 700 K are concentrated on the top surface of the piston, and the temperature gradient in the depth direction of the throat position decays rapidly.

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Observation on dynamic behavior of droplets evaporation after the end-of-injection of diesel spray

Cited by 3 publications

References 14 publications

Effect of Nozzle Diameter on Temperature Behavior in Spray Dryer Via Computational Fluid Dynamics

Effect of Nozzle Diameter on Temperature Behavior in Spray Dryer Via Computational Fluid Dynamics

Influence of Nozzle Diameter Towards Velocity Distribution in Spray Dryer Via Computational Fluid Dynamics

Thermal Load Analysis of Piston Damaged by Wall-Wetting Combustion in a Heavy-Duty Diesel Engine

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