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首页> 外文会议>International symposium on progress in safety science and technology;2010 ISSST >Development and Trend of Aerosol Fibrous Filtration Theory
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Development and Trend of Aerosol Fibrous Filtration Theory

机译：气溶胶纤维过滤理论的发展与趋势

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The aerosol fibrous filtration theory has made substantial progress since the early days of twentieth century. The theory has been able to successfully explain the mechanisms of interception, inertial impaction, diffusion, gravitation and electrostatic attraction deposition of particles inside the filter media. The isolated infinitely long cylinder, array of cylinders, arrays of parallel cylinders, fan, multi-fiber and other more complex models were came up successively. Corresponding equations of potential flow, viscous flow-Lamb's solution, Kuwabara-Happel flow fields etc. were solved. The single-fiber efficiency equations of isolated deposition mechanism and combined mechanisms, single-fiber drag force equations applicable to a wide range of conditions were obtained through the studies of particle deposition mechanisms in the model filter media. The research emphasis is now being extended from stationary filtration to non-stationary and nanometer level filtration. Meanwhile, numerical simulation of aerosol fibrous filtration process has made great progress and been used to study particle movement and deposition in the filtration media. It is becoming a new method to describe the filtration mechanisms more detailedly and objectively. The shortcomings of the existing theories were analyzed. New research areas and directions were put forward.
机译：自20世纪初以来，气溶胶纤维过滤理论取得了长足的进步。该理论已成功地解释了过滤介质内部颗粒的拦截，惯性碰撞，扩散，重力和静电吸引沉积的机理。相继提出了孤立的无限长圆柱，圆柱阵列，平行圆柱阵列，风扇，多光纤和其他更复杂的模型。求解了相应的势能方程，粘滞流-兰姆溶液，桑原-哈珀尔流场等。通过对模型过滤介质中颗粒沉积机理的研究，获得了隔离沉积机理和组合机理的单纤维效率方程，适用于多种条件的单纤维拖曳力方程。现在，研究重点已从固定过滤扩展到非固定和纳米级过滤。同时，气溶胶纤维过滤过程的数值模拟取得了很大的进展，并被用于研究颗粒在过滤介质中的运动和沉积。更加详细，客观地描述过滤机理已成为一种新的方法。分析了现有理论的不足。提出了新的研究领域和方向。

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