高速摄像机图像处理法确定风口回旋区边界

Determining Raceway Boundary by Image Processing via High-Speed Video Camera

通过建立COREX熔化气化炉的对称半体冷态模型,利用高速摄影的手段跟踪示踪颗粒,得到观察面板处风口回旋区域的颗粒运动信息.通过对大量颗粒运动信息的处理得到风口回旋区的颗粒速度标量场,将其与目测结果对比,确定0.15m/s以内的颗粒速度标量场为风口回旋区域.本研究结果可为COREX熔化气化炉及高炉等的理论研究或数学模拟提供准确的边界条件.

Developing a cold-state model of COREX meher-gasifier in its symmetric half and using a high-speed video camera to track tracer particles, the information on the moving particles in and around the raceway near observing panel can be obtained. Then, the scalar field of particle velocity in raceway can be obtained by processing a great deal of the data of moving particles. Compared with the observation results, the scalar field where the particle velocity is within 0.15 m/ is defined as the raceway. In such a way the boundary conditions can be provided precisely for the theoretical study and mathematical modeling of gas/solid flow and chemical reaction in and around the raceway of COREX melter-gasifier or blast furnace.