Experimental Investigation of Spray Characteristics of Pre-Filming
                        Air-Blast Atomizers II – Influence of Liquid Properties

Roudini, Mehrzad; Wozniak, G.

doi:10.29252/jafm.13.02.30336

Cited by 5 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It breaks into fine droplets when the liquid's velocity exceeds the critical speed of film rupture. Roudini et al [21] have used high-speed cameras combined with particle tracking and phase Doppler anemometry (PDA) to study the droplet size distribution curves of different liquids in the axial and radial directions. The results showed that equilibrium surface tension and viscosity influenced the entire atomization process and had a significant impact on droplet size distribution.…”

Section: Introductionmentioning

confidence: 99%

Effect of Polymer Adjuvant Type and Concentration on Atomization Characteristics of Nozzle

Hu,

Zhang,

Chen

et al. 2024

Agriculture

View full text Add to dashboard Cite

(1) Background: Various types of adjuvants are added during application to enhance the spraying effect, but most adjuvant formulations are proprietary products, and their exact compositions have not been disclosed. (2) Methods: The spatial distributions of droplet sizes and velocities generated by the atomization of different polymer adjuvants were measured based on the phase Doppler interferometer (PDI) measurement method. The sub-area statistical method was used to quantitatively analyze the droplet characteristics at various points below the nozzle. (3) Results: The polymer (polyethylene oxide (PEO))/associative surfactant (sodium dodecyl sulfate (SDS)) can increase the droplet size and velocity of the solution after atomization by increasing the amount of the polymer/associative surfactant to reduce the equilibrium surface tension of the solution and increase the viscosity. Different concentrations of polymer/associative surfactant atomization produced larger droplet sizes and better uniformity than polymer/non-associative surfactant (polysorbate-20 (Tween20)). At the same position, the relationship between droplet velocities for the three adjuvant combinations was roughly as follows: PEO/SDS solution had the highest velocity, followed by PEO solution, and PEO/Tween20 solution had the lowest velocity. (4) Conclusions: The optimal of droplet size distribution can be achieved by adding appropriate amounts of associative surfactants to polymers.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Polymer Adjuvant Type and Concentration on Atomization Characteristics of Nozzle

Hu,

Zhang,

Chen

et al. 2024

Agriculture

View full text Add to dashboard Cite

show abstract

“…Levitsky et al [ 7 ] improved atomization characteristics by reducing droplet size using an additional air vortex chamber. Furthermore, some scholars have found that structural and operating parameters, including liquid viscosity, surface tension, and the mass flow of air and fuel, may affect the atomization effect of pre-filming atomizers [ 8 , 9 , 10 ]. Zhao et al [ 11 ] designed a new external mixing atomizer to analyze its atomization characteristics.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2022

View full text Add to dashboard Cite

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.

show abstract

“…Their results indicated that the velocity fluctuation resulted from a combined effect of the spray core and surrounding air flow. Roudini et al [18] experimentally studied the effects of surface tension and liquid viscosity on the spray performance of a twin-fluid nozzle. The viscosity and surface tension had less influence on the mean droplet velocity downstream of the spray, but the surface tension significantly affected the atomization process.…”

Section: Introductionmentioning

confidence: 99%

Influence of atomizing core on droplet dynamic behavior and machining characteristics under synergistically enhanced twin-fluid spray

Chen

Gao

et al. 2020

Int J Adv Manuf Technol

View full text Add to dashboard Cite

The droplet dynamic behavior of spraying during the manufacturing process affects tool life, cooling, and lubrication. A detailed understanding of droplet dynamic behavior is required to improve the surface quality while reducing the cutting fluid consumption. In this study, quantitative measurements for droplet diameter, number concentration, and axial velocity were carried out through a phase Doppler particle analyzer technique. The droplet characteristic spatial distributions of a standard twin-fluid nozzle (STN) and a novel twin-fluid nozzle (NTN) under different gas-to-liquid mass ratio (GLR) values were analyzed in detail. The results showed that the high-speed internal gas flow of an atomizing core has a significant effect on improving the synergistically enhanced atomization behavior, and more smaller droplets and an increased droplet momentum are easily obtained. Furthermore, a better spatial distribution of atomization characteristics can be achieved under a higher GLR of 4.3%. Furthermore, the effects of the novel atomizing core structural parameters on the droplet mean velocity spatial distribution, droplet turbulence, and root mean square velocity fluctuation were investigated. The results also showed that the improved NTN can effectively improve the spray atomization performance and droplet dynamic characteristics. In addition, comparative studies of the effect of the atomizing core structure on the machining performance were performed. Compared with the STN, the improved NTN achieves a significant reduction in cutting temperature, tool wear, and surface roughness of 17.25%, 33.96%, and 37.83%, respectively, owing to the better droplet dynamic characteristics and spatial distribution of spray atomization characteristics.

show abstract

Experimental Investigation of Spray Characteristics of Pre-Filming Air-Blast Atomizers II – Influence of Liquid Properties

Cited by 5 publications

References 16 publications

Effect of Polymer Adjuvant Type and Concentration on Atomization Characteristics of Nozzle

Effect of Polymer Adjuvant Type and Concentration on Atomization Characteristics of Nozzle

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

Influence of atomizing core on droplet dynamic behavior and machining characteristics under synergistically enhanced twin-fluid spray

Contact Info

Product

Resources

About