Research On Water Being Dispersed Into Mist By Action Of Blasting

Capturing dust used of water mist resulting from explosion is a new way that solves problem of blasting dust from blasting demolishing city buildings. Liquid dispersal is precondition and is key technology in capturing dust by explosion water mist. Accordingly the study on water mist course is an important problem in this thesis, By combining methods of experiment and theory analysis, this paper has completely researched on the dynamic characteristic of water disperal mist and explosive parameter influenceing characteristic of disperal water mist. On the basis of former scientific research production, this paper also investigate distributin of water mist particle by compiling program processing digital picture of water mist particle taken in experiment by Super Fast Cam.The main content and conclusion of this thesis are as follows:Firstly, it studied some parameters influencing on kinetic characteristics of explosion water mist such as specific explosive, the ratio of length of water bag to diameter of the water bag, thickness of water bag. By measuring the dispersal velocity, dispersal radius, the size of water mist particle, the size distribution of water mist particle, the lasting time and other some parameters of water mist resulting from explosion, it established optical charged parameters making water atomization to the utmost extent. At the same time, this paper make clear some physical phenomena by investigating the mechanism of dispersal water resulting from explosion.Secondly, it introduced the experiment principle and experiment equipments measuring the size of blasting water mist particle by DPIV technology.Thirdly, because the water particle distorted in the process of taking picture, this paper mainly discussed the procedures of treating distorted digital image taken in the experiment and some of algorithms of the program system processing digital image, hereinto, the pretreatment of digital image mainly include geometrical rectification and binary to digital image. The theory of dimensional rectification and the algorithm of median filter wave was used for geometrical transform of the digital image. In addition, this paper validated the correctness of the program.In conclusion, under the same quality of explosives and water, the size distribution in different distance was measured and calculated, under the same quality...