典型文献
Effects of thermophoresis on Brownian coagulation of spherical particles over the entire particle size regime
文献摘要：
In many energy and combustion applications,particles experience large temperature gradients,which can affect the coagulation process due to thermophoresis.This study presents a rigorous theory of thermophoretically modified Brownian coagulation in the entire particle size regime.The theoretical derivations are based on the kinetic theory for the free-molecular regime and the harmonic mean method for the transition regime.The coagulation kernels in different size regimes can be expressed as the basic Brownian coagulation kernel times an enhancement factor.The enhancement factor represents the coagulation rate enhancement induced by thermophoresis and is a function of specific dimensionless numbers.Based on the enhancement factor,the thermophoretic enhancement effects on particle coag-ulation are further analyzed under a wide range of gas and particle conditions.The results show that thermophoretic enhancement effects are ignorable in the free-molecular regime,but need to be consid-ered in the continuum regime and the transition regime.In addition,the enhancement effects increase significantly with increase of gas temperature and temperature gradient while decrease with increase of gas pressure.The present study can improve understanding of thermophoretic effects on Brownian coag-ulation in the entire size regime and provide a useful tool to calculate the coagulation rates in presence of thermophoresis.
文献关键词：
中图分类号：
作者姓名：
Kaiyuan Wang;Pei Wang;Suyuan Yu
作者机构：
Institute of Applied Physics and Computational Mathematics,Beijing 100094,China;Smoore International Holdings Ltd.,Shenzhen 518102,China;Center for Combustion Energy,Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Department of Energy and Power Engineering,Tsinghua University,Beijing 100084,China
文献出处：
引用格式：
[1]Kaiyuan Wang;Pei Wang;Suyuan Yu-.Effects of thermophoresis on Brownian coagulation of spherical particles over the entire particle size regime)[J].颗粒学报（英文版）,2022(08):8-17
A类：
thermophoretically,coag
B类：
Effects,thermophoresis,Brownian,coagulation,spherical,particles,over,entire,size,In,many,energy,combustion,applications,experience,large,temperature,gradients,which,affect,process,due,This,study,rigorous,theory,modified,theoretical,derivations,are,kinetic,free,molecular,harmonic,mean,method,transition,kernels,different,regimes,expressed,basic,times,enhancement,represents,induced,by,function,specific,dimensionless,numbers,Based,effects,further,analyzed,wide,range,gas,conditions,results,show,that,ignorable,but,need,consid,ered,continuum,addition,increase,significantly,while,decrease,pressure,improve,understanding,provide,useful,tool,calculate,rates,presence
AB值：
0.416377
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