The Study of Aerosol Collection Efficiencies of Metal Woven Screens by Computational Fluid Dynamics

• Main Authors: Chin-Shu Cheng, 鄭錦淑
• Other Authors: Yu-Chen Chang
• Format: Others
• Language: en_US
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/62858938019814051838

碩士 === 元智大學 === 化學工程學系 === 93 === The purpose of this study is to apply the computational fluid dynamics package FLUENT to simulate particle penetration through woven metal screens of staggered pattern. The dimensions of the woven metal screens were measured by examining SEM pictures of the real screens. The 3-dimensional geometry was then established using the pre-processor GAMBIT software. The mesh was then imported to Fluent for setting the physical model and transport properties. The CFD model was then validated to ensure a suitable mesh scheme is found and adopted for the remaining study. Results shown here are visualized velocity, dynamic pressure, static pressure, Reynolds number, etc at cross-sections as viewed from three directions. Qualitative interpretation of the simulated results was attempted and discussed against theoretical expectations. Lastly, a comparison of penetration efficiency was made between simulation and experiment by Chen (2004). The agreement was found to fall within 1 to 10%, depending on face velocity applied.