DISPERSION AND DEPOSITION OF SPHERICAL-PARTICLES FROM POINT SOURCES IN A TURBULENT CHANNEL FLOW
DISPERSION AND DEPOSITION OF SPHERICAL-PARTICLES FROM POINT SOURCES IN A TURBULENT CHANNEL FLOW
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DOI：
10.1080/02786829208959550
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发表时间：
1992-05-01
影响因子：
5.2
通讯作者：
AHMADI, G
中科院分区：
文献类型：
--
作者：
LI, A;AHMADI, G
研究了点源颗粒在槽道湍流中的扩散和沉积。在分析中使用的经验平均速度分布和湍流强度的实验数据。瞬时湍流脉动被模拟为连续高斯随机场，并生成粒子轨迹系综并进行统计分析。对不同粒径的气溶胶粒子在离壁面不同位置的点源的扩散和沉积过程进行了一系列的数值模拟。研究了布朗扩散对颗粒弥散的影响。颗粒密度和颗粒表面相互作用的变化的影响进行了讨论。
The dispersion and deposition of particles from a point source in a turbulent channel flow are studied. An empirical mean velocity profile and the experimental data for turbulent intensities are used in the analysis. The instantaneous turbulence fluctuation is simulated as a continuous Gaussian random field, and an ensemble of particle trajectories is generated and statistically analyzed. A series's of digital simulations for dispersion and deposition of aerosol particles of various sizes from point sources at different positions from the wall is performed. Effects of Brownian diffusion on particle dispersion are studied. The effects of variation in particle density and particle-surface interaction are also discussed.