Particle Re-suspension in Rarefied Shear Flows

• Main Authors: SONGR,BUN-DENW, 宋文展
• Other Authors: YANG,JAW-YEN
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/50716422473786482614

碩士 === 國立臺灣大學 === 應用力學研究所 === 89 === Due to the effect of rarefied gas in the micro-scale, the Navier-Stokes equation traditionally used in the continuum model is not correct any more. We have to replace it by the Boltzmann equation. This paper is divided into two parts. The first part is an analysis of the plane rarefied Couette flow of binary gas mixture in different flow field condition based on kinetic model equations and discrete ordinate method. The second part is for the first time the application of particle motion equation combined with kinetic theory results to discuss micron size particle re-suspension motion that placed into the shear/Coutte flow obtained from the first part。 The present results of macro flow properties, such as the number density, velocity and temperature etc., are in good agreement with other numerical results. In the particle trajectory analysis, we also can validate the results of nearly continuum flow with the incompressible and compressible Navier-Stokes equation solutions.