Theoretical prediction of atomization performance of fibre suspensions and the effect of feed temperature and air velocity

Rozali, Siti N.M.; Paterson, Anthony H.J.; Hindmarsh, Jason P.; Huffman, Lee M.

doi:10.1016/j.jfoodeng.2019.109742

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…Particle size can also be affected by material temperature in two different ways. When material temperature increases, viscosity and surface tension of material decrease thereby enable easier breakup to form finer atomized powder 59,60 . For material melts, viscosity has a

T^{- k}

dependence while surface tension has a

- kT

dependence where k is a positive arbitrary constant 49 .…”

Section: Working Principles Of Atomizationmentioning

confidence: 99%

“…When material temperature increases, viscosity and surface tension of material decrease thereby enable easier breakup to form finer atomized powder. 59,60 For material melts, viscosity has a T Àk dependence while surface tension has a ÀkT dependence where k is a positive arbitrary constant. 49 This indicates that further extent of material temperature increase will have diminishing improvement of droplet breakup as the heating utility cost increases significantly.…”

Section: Materials Feed Temperaturementioning

confidence: 99%

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Atomization of metal and alloy powders: Processes, parameters, and properties

Soong,

Lai,

Kay Lup

2023

AIChE Journal

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Additive manufacturing (AM) has been intensively studied over this decade due to the increasing demand of functional and precise materials in various industries. AM process leverages on the concept of layer by layer deposition or joining of a material at micro‐ or nano‐scale to produce the final products. As such, AM technology is widely used to manufacture products of complex geometries with high precision in a short time. As the quality and the performance of AM manufactured functional products depend on the quality and the cost of the atomized metal or alloy powder used, the use of powders of high size uniformity, high purity, high sphericity, high flowability, low cost, and no trapped gas bubble porosity is necessary. To this end, various metal production technologies were investigated and one of the popular technologies is atomization. This article reviewed the working principles of the various atomization technologies for the production of fine metal and alloy powders. The key atomization conditions discussed in this article include atomization type, material feed rate and temperature, atomizing fluid flow rate, type and temperature, cooling rate, and atomization pressure. In addition, several outlooks on the prospect and the optimization of atomization technologies were also discussed in this article.

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T^{- k}

dependence while surface tension has a

- kT

dependence where k is a positive arbitrary constant 49 .…”

Section: Working Principles Of Atomizationmentioning

confidence: 99%

Section: Materials Feed Temperaturementioning

confidence: 99%

Atomization of metal and alloy powders: Processes, parameters, and properties

Soong,

Lai,

Kay Lup

2023

AIChE Journal

View full text Add to dashboard Cite

show abstract

“…1) is the disintegration of a liquid film that comes out on a solid surface subjected to a sufficient surface disturbance in the normal direction. The competition between disruptive (like kinetic energy, friction, gravity, interface shearing, and pressure fluctuation) and cohesive (like shear resistance, the surface tension of liquids, and extensional resistance) forces on the liquid surface induce fluctuations and disturbances in the liquid, separating it from the surface and splits into small droplets like a mist in the gas phase [1][2][3]. The initial process of disintegration or break-up is defined as primary atomization, while the second atomization occurs when numerous larger droplets produced in the primary atomization can be unstable, thus reducing to smaller sizes [2,4].…”

Section: Introductionmentioning

confidence: 99%

Factors influencing droplet size in pneumatic and ultrasonic atomization and its application in food processing

Camacho-Lie,

Antonio-Gutiérrez,

López-Díaz

et al. 2023

Discov Food

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Droplet size has significant scientific and industrial relevance in the effectiveness of atomization for several applications in the chemical, pharmaceutical, and food industries. This technology is widely employed in the food industry for processes such as spray drying, microencapsulation, edible coatings, and food disinfection, among others. This work comprehensively reviews the effect of liquid properties and equipment operating factors influencing droplet size in pneumatic and ultrasonic atomization. The discussion on the atomization theories includes the different models for estimating droplet size as a function of selected variables for both processes. The different model approaches are reviewed, focusing on their advantages, disadvantages, applications, and limitations. Furthermore, selected models were employed to carry out different sensitivity analyses showing the effect of variables related to the liquid properties, the type and characteristics of the atomizers, and the operating conditions, allowing the reader to appreciate the most critical factors in both atomization systems.

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Orientation simulation and image experiment for flexible biomass particle in wedge fluidization channel

Zhou

Chen

et al. 2022

Journal of Food Engineering

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Theoretical prediction of atomization performance of fibre suspensions and the effect of feed temperature and air velocity

Cited by 3 publications

References 16 publications

Atomization of metal and alloy powders: Processes, parameters, and properties

Atomization of metal and alloy powders: Processes, parameters, and properties

Factors influencing droplet size in pneumatic and ultrasonic atomization and its application in food processing

Orientation simulation and image experiment for flexible biomass particle in wedge fluidization channel

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