سال انتشار: ۱۳۹۰

محل انتشار: نوزدهمین همایش سالانه مهندسی مکانیک

تعداد صفحات: ۴

نویسنده(ها):

V Golkarfard – M.Sc. Department of Mechanical Engineering, Shahid Bahonar University of Kerman
S. A. Gandjalikhan Nasab – Associated Professor, Department of Mechanical Engineering, Shahid Bahonar University of Kerman
A. B. Ansari – M. Sc. Department of Mechanical Engineering, Shahid Bahonar University of Kerman;
M. Salmanzadeh – Assistant Professor, Department of Mechanical Engineering, Shahid Bahonar University of Kerman

چکیده:

A numerical simulation procedure for studying deposition of aerosol particles in a laminar convection flow of radiating gas over a backward-facing step is developed. In the gas phase flow, all of the heat transfer mechanisms consisting of conduction, convection and radiation take place simultaneously. Behavior of solid particles is studied numerically based on an Eulerian– Lagrangian approach. Two dimensional Navier-Stokes and energy equations are solved using CFD techniques, while the radiative transfer equation (RTE) is solved by discrete ordinates method (DOM) for calculating radiative heat flux distribution. The objective of this research is to study the effect of thermophoresis and also radiation on deposition of particles. Numerical results show that thermophoresis leads to increase the deposition of certain range of diameters but the radiation has no effect on deposition. The results are compared with the existing experimental and numerical data and good agreement is found.