Numerical Investigation of Nano Particles Dispersion and Deposition in Fully Developed Laminar Pipe Flows | ||
| AUT Journal of Mechanical Engineering | ||
| مقاله 2، دوره 1، شماره 1، 2017، صفحه 13-20 اصل مقاله (4.73 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/mej.2016.762 | ||
| نویسندگان | ||
| P. Talebizadeh1؛ H. Rahimzadeh* 1؛ G. Ahmadi2؛ R. Brown3؛ K. Inthavong4 | ||
| 1Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran | ||
| 2Department of Mechanical and Aeronautical Engineering, Clarkson University, New York, USA | ||
| 3Biofuel Engine Research, Queensland University of Technology, Brisbane, Australia | ||
| 4School of Aerospace, Mechanical and Manufacturing, Engineering, RMIT University, Melbourne, Australia | ||
| چکیده | ||
| The aim of this paper is to study the deposition and dispersion of nano particles in fully developed laminar pipe flows numerically. To simulate particle transport and to locate the position of particles, the Eulerian - Lagrangian method is used under the conditions of one-way coupling. Due to studied range of particle diameters from 5 nm to 100 nm, the main effective force for particle deposition is the Brownian diffusion force. After studying the mesh independency and validating results, time history analysis of particle transport is also performed by injecting the particles from the inlet surface and tracking them at each moment. Furthermore, the effective parameters, i.e. particle diameter, pipe length and diameter, temperature and particle density are studied comprehensively. The results of time history analysis of particle transport show that nano particles with less diameters are more deposited in less time. Furthermore, maximum number of escaped particles from the pipe occurred at 0.035 s after injecting the particles for all studied particle diameters due to the studied flow rate and length of the pipe. The output of this study can provide a guideline for evaluating nano particle transport and deposition in fully developed laminar pipe flows. | ||
تازه های تحقیق | ||
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| کلیدواژهها | ||
| Two phase gas – solid flow؛ nano particles؛ Particle deposition؛ Fully developed laminar flow؛ Lagrangian particle tracking | ||
| مراجع | ||
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