Modeling Injection of Dense Liquid Sprays in Radio Frequency Inductively Coupled Plasmas

Yan, Su; Mostaghimi, J.

doi:10.1007/s11090-004-3027-9

Cited by 8 publications

(2 citation statements)

References 17 publications

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“…The droplets collision model used in the present study is similar to that of Shan and Mostaghimi's [25], which was developed by O'Rourke [36]. Shan and Mostaghimi validated that the implementation of the O'Rourke droplet collision model into the RF spray model is viable.…”

Section: Multiple Particles' Characteristicssupporting

confidence: 54%

“…Benson et al [24] used the DSMC (direct simulation Monte Carlo) method coupled with Ashgriz-Poo's analytical expressions to estimate the importance of coalescence of droplets in the Ar ICP. Shan and Mostaghimi [25] implemented the O'Rourke's droplet collision model into the RF ICP model and validated the outcomes of liquid droplets collision with the experimental results. While in Shan and Mostaghimi's study, the water droplets without solid nano-particles were taken into consideration, only including the droplets heating and evaporation.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Modeling in Radio Frequency Suspension Plasma Spray of Zirconia Powders

Qian

Lin

Xiong

2010

Plasma Chem Plasma Process

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A comprehensive model was developed to investigate the suspension spraying for a radio frequency (RF) inductively coupled plasma torch. Firstly, the electromagnetic field is solved with the Maxwell equations and validated by the analytical solutions. Secondly, the plasma field with different power inputs is simulated by solving the governing equations of the fluid flow coupled with the RF heating. Then, the suspension droplets embedded with nano particles are modeled in a Lagrangian manner, considering feeding, collision, heating and evaporation of the suspension droplets, as well as tracking, acceleration, melting and evaporation of the nano or agglomerate particles. The noncontinuum effects and the influence of the evaporation on the heat transfer are considered. This particle model predicts the trajectory, velocity, temperature and size of the in-flight nano-or agglomerate particles. The effects of operating conditions and intial inputs on the particle characteristics are investigated. The statistical distributions of multiple particles' size, velocity, temperature are also discussed for the cases with and without consideration of suspension droplets collision. List of symbolsheat of evaporation (J kg -1 ) m Mass Nu Nusselt number Pr Prandtl number, Pr = m/a Q J Joule heating (W m -3 ) Q conv Convection heat (W m -3 ) Q rad Radiation heat loss (W m -3 ) Q vap Vaporization heat (W m -3 ) R Radius (nm) Sh Sherwood number r Radial coordinate (m) t Time (s) T Particle temperature (K)

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Section: Multiple Particles' Characteristicssupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Numerical Modeling in Radio Frequency Suspension Plasma Spray of Zirconia Powders

Qian

Lin

Xiong

2010

Plasma Chem Plasma Process

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3D Modeling of Transport Phenomena and the Injection of the Solution Droplets in the Solution Precursor Plasma Spraying

2007

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Solution precursor plasma spraying has been used to produce finely structured ceramic coatings with nano-and sub-micrometric features. This process involves the injection of a solution spray of ceramic salts into a DC plasma jet under atmospheric condition. During the process, the solvent vaporizes as the droplet travel downstream. Solid particles are finally formed due to the precipitation of the solute, and the particle are heated up and accelerated to the substrate to generate the coating. This article describes a 3D model to simulate the transport phenomena and the trajectory and heating of the solution spray in the process. The jet-spray two-way interactions are considered. A simplified model is employed to simulate the evolution process and the formation of the solid particle from the solution droplet in the plasma jet. The temperature and velocity fields of the jet are obtained and validated. The particle size, velocity, temperature, and position distribution on the substrate are predicted.

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Numerical Simulation of Droplet Breakup and Collision in the Solution Precursor Plasma Spraying

2007

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Finely structured ceramic coatings can be obtained by solution precursor plasma spraying. The final structure of the coating highly depends on the droplet size and velocity distribution at the injection, the evolution of the spray in the jet, and droplet breakup and collision within the spray. This article describes a 3D model to simulate the transport phenomena and the trajectory and heating of the solution spray in the process. OÕRourkeÕs droplet collision model is used to take into account the influence of droplet collision. The influence of droplet breakup is also considered by implementing TAB droplet breakup models into the plasma jet model. The effects of droplet collisions and breakup on the droplet size, velocity, and temperature distribution of the solution spray are investigated. The results indicate that droplet breakup and collision play an important role in determining the final particle size and velocity distributions on the substrate.

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Modeling Injection of Dense Liquid Sprays in Radio Frequency Inductively Coupled Plasmas

Cited by 8 publications

References 17 publications

Numerical Modeling in Radio Frequency Suspension Plasma Spray of Zirconia Powders

Numerical Modeling in Radio Frequency Suspension Plasma Spray of Zirconia Powders

3D Modeling of Transport Phenomena and the Injection of the Solution Droplets in the Solution Precursor Plasma Spraying

Numerical Simulation of Droplet Breakup and Collision in the Solution Precursor Plasma Spraying

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