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A new analytical solution for solving the Smoluchowski equation due to nanoparticle Brownian coagulation for non-self-preserving system
Yu, MZ (Yu, Mingzhou)[ 1,2 ]; Seipenbusch, M (Seipenbusch, Martin)[ 3 ]; Yang, JH (Yang, Jinghua)[ 1 ]; Jin, HH (Jin, Hanhui)[ 4 ]
2014-10-01
发表期刊Aerosol and Air Quality Research
卷号14期号:6页码:1726-1737
文章类型期刊论文
摘要

The Smoluchowski equation has become a fundamental equation in nanoparticle processes since it was proposed in 1917, whereas the achievement of its analytical solution remains a challenging issue. In this work, a new analytical solution, which is absolutely different from the conventional asymptotic solutions, is first proposed and verified for non-self-preserving nanoparticle systems in the free molecular regime. The Smoluchowski equation is first converted to the form of moment ordinary differential equations by the performance of Taylor expansion method of moments and subsequently resolved by the separate variable technique. In the derivative, a novel variable, g = m0m2/m12, where m0, m1 and m2 are the first three moments, is first revealed which can be treated as constant. Three specific models are proposed, two with a constant g (an Analytical Model with Constant g (AMC), and a Modified Analytical Model with Constant g (MAMC)), and another with varying g(a finite Analytical Model with Varying g (AMV)). The AMC model yields significant errors, while its modified version, i.e., the MAMC model, is able to produce highly reliable results. The AMV is verified to have the capability to solve the Smoluchowski equation with the same precision as the numerical method, but an iterative procedure has to be employed in the calculation.

关键词Analytical Solution Taylor-expansion Method Of Moments Smoluchowski Equation Nanoparticle Browniancoagulation Free Molecular Regime
DOI10.4209/aaqr.2014.03.0059
收录类别SCIE
语种英语
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9840
专题粉尘与环境研究室
通讯作者Jin, HH (Jin, Hanhui)[ 4 ]
作者单位1.China Jiliang University, Hangzhou 310028, China;
2.Institute of Earth Environment, Chinese academy of sciences, China;
3.Institute for Mechanical processes Engineering and Mechanics, Karlsruhe Institute of Technology, Germany;
4.Institute of Fluid Engineering, Zhejiang University, China
推荐引用方式
GB/T 7714
Yu, MZ ,Seipenbusch, M ,Yang, JH ,et al. A new analytical solution for solving the Smoluchowski equation due to nanoparticle Brownian coagulation for non-self-preserving system[J]. Aerosol and Air Quality Research,2014,14(6):1726-1737.
APA Yu, MZ ,Seipenbusch, M ,Yang, JH ,&Jin, HH .(2014).A new analytical solution for solving the Smoluchowski equation due to nanoparticle Brownian coagulation for non-self-preserving system.Aerosol and Air Quality Research,14(6),1726-1737.
MLA Yu, MZ ,et al."A new analytical solution for solving the Smoluchowski equation due to nanoparticle Brownian coagulation for non-self-preserving system".Aerosol and Air Quality Research 14.6(2014):1726-1737.
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