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A CFD study of the transport and fate of airborne droplets in a ventilated office: The role of droplet−droplet interactions

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1465-8

Abstract:

• Coulomb and Lennard−Jones forces were considered for droplet interactions

Keywords： Droplet interactions     Aerosols     Colloids     CFD     Transport     Fate    

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Comparison of droplet distributions from fluidic and impact sprinklers

Xingye ZHU,Shouqi YUAN,Junping LIU,Xingfa LIU

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 1,   Pages 53-59 doi: 10.15302/J-FASE-2015049

Abstract: To adapt to the trend toward low-energy precision irrigation, the droplet distributions for two new prototypeA laser precipitation monitor was used to measure the droplet distributions.Droplet size and velocity distributions were tested under four operating pressures for nozzles 1.5 mFor the operating pressures tested, the mean OS, FS and IS droplet diameters ranged from 0 to 3.4, 0The mean OS and FS droplet velocities ranged from 0 to 6.3 m·s , whereas IS ranged from 0 to 6.3 m·s

Keywords： outside signal sprinkler     fluidic sprinkler     impact sprinkler     sprinkler irrigation     droplet size     droplet    

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Analysis of the radiation heat transfer process of phase change for a liquid droplet radiator in space

Jinying YIN, Linhua LIU

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 166-173 doi: 10.1007/s11708-010-0105-y

Abstract: optimization of a space power system is greatly affected by the radiation heat transfer in a liquid dropletThe Mie theory is used to calculate the radiative properties of the droplet bed, whereas the effectiveflux in the LDR, such as size distribution, flow velocity, phase change of droplets, layer thickness, dropletDroplet concentration in the layer and the material type of the working fluid have strong effects on

Keywords： radiation heat transfer     particle polydispersion     liquid droplet radiator     phase change    

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Modeling and simulation of droplet translocation and fission by electrowetting-on-dielectrics (EWOD)

Nathan HOWELL, Weihua LI

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 376-388 doi: 10.1007/s11465-010-0104-z

Abstract: This paper discusses methods of microfluidic droplet actuation by means of electrowetting-on-dielectricsDigital or droplet microfluidics implies the manipulation of droplets on a scale of nanoliters (10 LThe two operations in focus here are droplet translocation (moving) and droplet fission (splitting),The droplet position and mean kinetic energy of the droplet are also investigated and compared to otherworks, proving the dynamics of a droplet motion found here.

Keywords： electrowetting-on-dielectrics (EWOD)     electrowetting     microfluidics     droplet translocation     droplet fission    

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Dynamical analysis of droplet impact spreading on solid substrate

Zhaomiao LIU, Huamin LIU, Xin LIU,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 308-315 doi: 10.1007/s11465-010-0020-2

Abstract: This paper investigates the impact spreading of a droplet on a solid substrate using numerical simulationThe process of droplet spreading is described, the analysis of low speed and high speed droplet spreading, and more than one droplet spreading simultaneously is performed.The pressure, velocity, and spreading factor during the droplet spreading are reported.The impact speed impacts on the spreading factors in high speed droplet spreading.

Keywords： droplet     impact spreading     numerical simulation    

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Synthesis of crystals and particles by crystallization and polymerization in droplet-based microfluidic

Jingtao WANG, Jin ZHANG, Junjie HAN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1,   Pages 26-36 doi: 10.1007/s11705-009-0292-4

Abstract: The recent advances in crystallization and polymerization assisted by droplet-based microfluidics toDroplet-based microfluidic devices are powerful tools to execute some precise controls and operations

Keywords： core-shell     monodisperse     nucleation     Microfluidic     different technical    

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Numerical study of droplet dynamics impinging onto steel plate covered with scale layer

Jan BOHá?EK, Ale? HORáK

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 389-398 doi: 10.1007/s11465-010-0108-8

Abstract: This paper describes the dynamics of high-speed impact between the compressible water droplet and theConsidering a high droplet impact speed (100–300 ms ), inferential extremely short time interval (0.1Droplet dynamics was simulated with the help of LS-Dyna solver, whereas the stress analysis was performed

Keywords： hydraulic descaling     scale     rolling     water-hammer     descaling theory    

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Effect of UAV prewetting application during the flowering period of cotton on pesticide droplet deposition

Weixiang YAO, Xianju WANG, Yubin LAN, Ji JIN

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4,   Pages 455-461 doi: 10.15302/J-FASE-2018232

Abstract:

Prewetting process can reduce the contact angle between the droplet and the leaf blade, so that thedroplet can more easily wet and spread, thereby increasing the quantity of deposition.The results revealed that with no prewetting, droplet deposition quantity decreased with increasing leafAfter prewetting, the mean droplet deposition quantity on plots B, C and D increased by 39.8%, 9.7% andIt was also found that the mean droplet deposition quantity in each leaf blade angle range increased

Keywords： aerial spray     cotton     deposition     flowering period     leaf angle     prewetting     UAV    

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Droplet spectra and high-speed wind tunnel evaluation of air induction nozzles

Qing TANG, Liping CHEN, Ruirui ZHANG, Min XU, Gang XU, Tongchuan YI, Bin ZHANG

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4,   Pages 442-454 doi: 10.15302/J-FASE-2017169

Abstract: Droplet size spectra were measured for four air induction nozzles (IDK-120-01, IDK-120-02, IDK-120-03

Keywords： air induction nozzle     wind tunnel     aerial spray     droplet size spectra    

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Influence of sprinkler irrigation droplet diameter, application intensity and specific power on flower

Yisheng ZHANG, Delan ZHU

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 165-171 doi: 10.15302/J-FASE-2017145

Abstract: To determine the main parameters of droplet strike damage and avoid flower injury due to the unsuitablepractices during sprinkler irrigation, an indoor experiment of irrigation droplet impact on cyclamenThe influences of different parameters such as droplet diameter, application intensity, specific powerApplication intensity was also correlated with injury when the droplet diameter was larger than 1 mm.

Keywords： application intensity     damage     floriculture     flowers     specific power     sprinkler irrigation    

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Digital microfluidics: A promising technique for biochemical applications

He WANG, Liguo CHEN, Lining SUN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 510-525 doi: 10.1007/s11465-017-0460-z

Abstract: This study reviews the basic principles of droplet actuation, configuration design, and fabrication of

Keywords： digital microfluidics     electrowetting on dielectric     discrete droplet     biochemistry    

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Hierarchically Inverse Opal Porous Scaffolds from Droplet Microfluidics for Biomimetic 3D Cell Co-Culture Article

Changmin Shao, Yuxiao Liu, Junjie Chi, Fangfu Ye, Yuanjin Zhao

Engineering 2021, Volume 7, Issue 12,   Pages 1778-1785 doi: 10.1016/j.eng.2020.06.031

Abstract: The designed scaffold is constructed using a combined concept involving an emulsion droplet template

Keywords： Microfluidics     Inverse opal     Cell culture     Droplet     Biomaterial    

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Research on Droplet Transfer Spectral Information in Pulsed MIG Welding

Li Junyue,Yang Lijun,Hu Shenggang,Li Huan,Liu Gang

Strategic Study of CAE 2000, Volume 2, Issue 7,   Pages 79-86

Abstract:

By the aid of the spectrum detecting device of welding arc, the droplet transfer spectral informationResults show that the arc spectral information can reflect well droplet transfer process in pulsed MIGMany kinds of spectral information modes of droplet transfer have been found, which can reflect variousdroplet transfer types, such as one-peak-zero-base, one-peak-one-base, one-peak-two-base, two-peak-zero-basespectral information have excellent character and therefore the spectral real-time and precise control of droplet

Keywords： arc spectral information     pulsed MIG welding     droplet transfer     transfer mode    

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Particle formation of hydroxyapatite precursor containing two components in a spray pyrolysis process

W. Widiyastuti, Adhi Setiawan, Sugeng Winardi, Tantular Nurtono, Heru Setyawan

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1,   Pages 104-113 doi: 10.1007/s11705-014-1406-1

Abstract: The particle formation mechanism of hydroxyapatite precursor containing two components, Ca(OOCCH ) and (NH ) HPO with a ratio of Ca/P= 1.67, in a spray pyrolysis process has been studied by computational fluid dynamics (CFD) simulation on the transfer of heat and mass from droplets to the surrounding media. The focus included the evaporation of the solvent in the droplets, a second evaporation due to crust formation, the decomposition reaction of each component of the precursor, and a solid-state reaction that included the kinetic parameters of the precursor regarding its two components that formed the hydroxyapatite product. The rate of evaporation and the reacted fraction of the precursor both increased with temperature. The predicted average size of the hydroxyapatite particles agreed well with the experimental results. Therefore, the selected models were also suitable for predicting the average size of particles that contain two components in the precursor solution.

Keywords： droplet     hydroxyapatite particle     CFD     tubular furnace     spray pyrolysis    

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A review on emulsification via microfluidic processes

Yichen Liu, Yongli Li, Andreas Hensel, Juergen J. Brandner, Kai zhang, Xiaoze Du, Yongping Yang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 3,   Pages 350-364 doi: 10.1007/s11705-019-1894-0

Abstract: Compared to conventional methods, the microfluidics-based process can produce controllable droplet sizeThe droplet formation or breakup is the result of combined effects resulting from interfacial tension

Keywords： microfluidics     emulsification     capillary number     droplet breakup    

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Title Author Date Type Operation

A CFD study of the transport and fate of airborne droplets in a ventilated office: The role of droplet−droplet interactions

Journal Article

Comparison of droplet distributions from fluidic and impact sprinklers

Xingye ZHU,Shouqi YUAN,Junping LIU,Xingfa LIU

Journal Article

Analysis of the radiation heat transfer process of phase change for a liquid droplet radiator in space

Jinying YIN, Linhua LIU

Journal Article

Modeling and simulation of droplet translocation and fission by electrowetting-on-dielectrics (EWOD)

Nathan HOWELL, Weihua LI

Journal Article

Dynamical analysis of droplet impact spreading on solid substrate

Zhaomiao LIU, Huamin LIU, Xin LIU,

Journal Article

Synthesis of crystals and particles by crystallization and polymerization in droplet-based microfluidic

Jingtao WANG, Jin ZHANG, Junjie HAN,

Journal Article

Numerical study of droplet dynamics impinging onto steel plate covered with scale layer

Jan BOHá?EK, Ale? HORáK

Journal Article

Effect of UAV prewetting application during the flowering period of cotton on pesticide droplet deposition

Weixiang YAO, Xianju WANG, Yubin LAN, Ji JIN

Journal Article

Droplet spectra and high-speed wind tunnel evaluation of air induction nozzles

Qing TANG, Liping CHEN, Ruirui ZHANG, Min XU, Gang XU, Tongchuan YI, Bin ZHANG

Journal Article

Influence of sprinkler irrigation droplet diameter, application intensity and specific power on flower

Yisheng ZHANG, Delan ZHU

Journal Article

Digital microfluidics: A promising technique for biochemical applications

He WANG, Liguo CHEN, Lining SUN

Journal Article

Hierarchically Inverse Opal Porous Scaffolds from Droplet Microfluidics for Biomimetic 3D Cell Co-Culture

Changmin Shao, Yuxiao Liu, Junjie Chi, Fangfu Ye, Yuanjin Zhao

Journal Article

Research on Droplet Transfer Spectral Information in Pulsed MIG Welding

Li Junyue,Yang Lijun,Hu Shenggang,Li Huan,Liu Gang

Journal Article

Particle formation of hydroxyapatite precursor containing two components in a spray pyrolysis process

W. Widiyastuti, Adhi Setiawan, Sugeng Winardi, Tantular Nurtono, Heru Setyawan

Journal Article

A review on emulsification via microfluidic processes

Yichen Liu, Yongli Li, Andreas Hensel, Juergen J. Brandner, Kai zhang, Xiaoze Du, Yongping Yang

Journal Article