Research on nucleation and coagulation of nanoparticles in parallel twin jets |
| |
Authors: | Yin Zhao-qin Lin Jian-zhong Zhou Kun |
| |
Institution: | 1. Institute of Fluid Engineering,Department of Mechanics,Zhejiang University,Hangzhou 310027,P.R.China;China Jiliang University,Hangzhou 310018,P.R.China 2. Institute of Fluid Engineering,Department of Mechanics,Zhejiang University,Hangzhou 310027,P.R.China |
| |
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 are given.The functions of the sulfur content,relative humidity and jet Reynolds number are 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 gas-to-nanoparticle conversion mostly takes place in the middle and interface of the twin jets.The coagulation process of particles reduces the number concentration,while 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. |
| |
Keywords: | nanoparticle twin jets nucleation coagulation numerical calculation |
本文献已被 维普 万方数据 SpringerLink 等数据库收录! |
| 点击此处可从《应用数学和力学(英文版)》浏览原始摘要信息 |
| 点击此处可从《应用数学和力学(英文版)》下载免费的PDF全文 |