首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Instability of binary nanofluids with magnetic field
Authors:U Gupta  J Sharma  V Sharma
Institution:1. Dr. S. S. Bhatnagar University Institute of Chemical Engineering and Technology, Panjab University, Chandigarh, 160014, India
2. Energy Research Centre, Panjab University, Chandigarh, 160014, India
3. Department of Mathematics, Himachal Pradesh University, Shimla, 171005, India
Abstract:The present paper investigates the effects of a vertical magnetic field on the double diffusive nanofluid convection. The effects of the Brownian motion and thermophoresis due to the presence of nanoparticles and the effects of the Dufour and Soret parameters due to the presence of solute are included in the investigated model. The normal mode technique is used to solve the conservation equations. For the analytical study, valid approximations are made in the complex expression for the Rayleigh number to get useful and interesting results. The bottom heavy binary nanofluids are more stable than the regular binary fluids, while the top heavy binary nanofluids are less stable than the regular binary fluids. The critical wave number and the critical Rayleigh number increase whereas the frequency of oscillation (for the bottom heavy configuration) decreases when the Chandrasekhar number increases. The numerical results for the alumina-water nanofluid are studied by use of the MATHEMATICA software.
Keywords:Chandrasekhar number  Brownian motion  natural convection  binary nanofluid  thermophoresis  
本文献已被 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
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号