Measurement Application of Particle Dynamic Analysis

Particle Dynamic Analysis (PDA) is an optical technique used to measure the size and velocity of spherical particles simultaneously. This technique has already been widely applied in various industries, such as physics, and power engineering. A comprehensive numerical study of measurement on construction and urban spaces is presented in this paper. The techniques of PAD were adopted in this study to predict a method that can precisely measure architecture and urban spaces, as well as, an additional method that was designed and used for this paper. The simulation structure of Tongji Residential Estate is also established and tested successfully with PDA technique. By comparison of the particle velocity in the required points of the subject in the experiment, this method can measure architecture and urban spaces effectively and precisely. Furthermore, it has many typical features such as non-contact measurement, no interference to flow field, and fast dynamic response. The recommended PDA techniques and associated devices provide an effective, as well as, powerful support to architecture and urban construction.