工业纳米颗粒气溶胶测量及数值模型构建

Engineering Nano￣scale Aerosol Based on Measurement and Construction of Theoretical Model

为了实现纳米颗粒多相流的实验测量及相关模型构建,基于欧盟Nanoparticle Project实验平台,采用自制金纳米颗粒的分散系统以及由高压雾化器产生微米量级颗粒的分散系统,对由不同尺度谱颗粒系统组成的分散体系进行实验测量,并针对颗粒壁面湍动以及热扩散沉积和复杂系统发生源信息获取等方面进行模型构建,最终提出新的针对颗粒沉积率的计算方法,给出通过实验测量数据对发生源粒度谱进行估计的方法。

In order to realize the experimental and model studies on the nano-scale aerosol in aerosol science and multiphase flow, the measurement was conducted to investigate the dynamical processes of different aerosol systems using the self-made dispersing system for gold nano-particles and the dispersing system for micro-particles from a high-pressure atomizer. The model were constructed for the deposition because of the turbulent and thermal mechanisms, and the estimation of the source strength. The new calculating method for deposition rate of particles was suggested and the estimating method for particle size distribution of source based on the measured data was given.