The flow field characteristics analysis of the 62A style of military gas mask filter and model research

• Main Authors: yin yu ching, 殷裕清
• Other Authors: Li Chun-Chi
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/99766507349712785827

碩士 === 國防大學中正理工學院 === 兵器系統工程研究所 === 94 === The main purpose of this research is to do the three-dimension flow field simulation analysis within the gas mask filter and derive out inside porous medium coefficient by utilizing CFD. This respirator has two kinds of porous medium. We use experimental measurement as the method to estimate the parameter and examine the pressure of the export and entry when different flows pass the respirator. Then find out one correct Forchheimer quadratic equation and lead out porous coefficient. Compare the result of calculation with experiment value; the deviation value is only 2.7%. It proves the accuracy of the coefficient. The observation of the field flows distribution within the respirator and the analysis of the protection efficiency in accordance with current respirator standard can be a basis of future improvement.