Research on the Nucleation and Coagulation of Nanoparticles in the Parallel Twin Jets

YIN Zhao-qin; LIN Jian-zhong; ZHOU Kun

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Article Navigation > Applied Mathematics and Mechanics > 2008 > 29(2): 140-148

YIN Zhao-qin, LIN Jian-zhong, ZHOU Kun. Research on the Nucleation and Coagulation of Nanoparticles in the Parallel Twin Jets[J]. Applied Mathematics and Mechanics, 2008, 29(2): 140-148.

Citation:

YIN Zhao-qin, LIN Jian-zhong, ZHOU Kun. Research on the Nucleation and Coagulation of Nanoparticles in the Parallel Twin Jets[J]. Applied Mathematics and Mechanics, 2008, 29(2): 140-148.

Citation:

YIN Zhao-qin, LIN Jian-zhong, ZHOU Kun. Research on the Nucleation and Coagulation of Nanoparticles in the Parallel Twin Jets[J]. Applied Mathematics and Mechanics, 2008, 29(2): 140-148.

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Research on the Nucleation and Coagulation of Nanoparticles in the Parallel Twin Jets

1.
Institute of Fluid Engineering, Department of Mechanics, Zhejiang University, Hangzhou 310027, P. R. China;

Received Date: 2006-05-16
Rev Recd Date: 2007-12-25
Publish Date: 2008-02-15

Abstract

Abstract

The large eddy simulation method has been used to simulate the diffusion of H₂SO₄ vapor in the parallel twin jets.The distributions of number concentration and size of nanoparticles produced by nucleation and coagulation in sulfuric acid/water system were given.The functions of the sulfur content,relative humidity and jet Reynolds number were evaluated according to the distributions of number concentration and size of nanoparticles.The results show that the nucleation in sulfuric acid/water system produces large number of nanoparticles,and ga-sto-nanoparticle conversion mostly takes place in the middle and interface of the twin jets.The coagulation process of particles reduces the number concentration but increases the mean particle size.For the case with higher sulfur content,more number and smaller size nanoparticles are produced by nucleation and coagulation.There is also a larger number of nanoparticles for the cases with higher relative humidity and jet Reynolds number.
- nanoparticle,
- twin jets,
- nucleation,
- coagulation,
- numerical calculation

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References(15)

References

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