风口回旋区的数字图像处理方法

风口回旋区对高炉及COREX熔化气化炉冶炼过程起着十分重要的作用,人们对风口回旋区进行了大量的试验与模拟研究.目前通过试验方法得到的风口回旋区仅仅是由若干个测量点确定.物理参数场可以用来准确确定回旋区边界,但是目前为止所有的研究风口回旋区的物理参数场都是由数值模拟确定,并且没有明确的回旋区的定义标准.在本研究中利用CO...

Raceway Definition Using Digital Image Processing Technology

The raceway has been studied extensively both experimentally and theoretically, but the raceway boundary in experiment is arbitrarily determinated by several measuring points. The whole physical parameters field can be used to describe the raceway boundary precisely, but all of the physical parameter fields are obtained from numerical simulation so far and there isn’t a specific criterion used to define the raceway boundary. In this study, a new method has been developed to define the raceway boundary in cold model of COREX melter gasifier, so as in blast furnace, granular drying, etc. The particle velocity contour criterion of raceway boundary definition is 0.15ms-1 in this study, and the precise raceway boundary can be obtained through this method. It is very important for the theoretical and mathematical modeling of the gas and solid flow and chemical reaction in and around the raceway region.