流化床化学链式反应的高温流体力学研究

In the present work the effect of temperature on the hydrodynamic behavior of fluidized beds is experimentally studied with modern non-invasive experimental techniques. In particular, the development of a high temperature endoscopic Particle Image Velocimetry (PIV) is presented. An experimental set up has been designed and constructed that allows the study of hydrodynamics up to temperatures of 1000 oC, typical temperatures encountered in chemical looping gasification processes. First the endoscopic PIV results have been validated at low temperatures with a cold flow setup. Subsequently the application of the new technique to high temperature fluidized beds is presented and the obtained results discussed. 德国LaVision PIV/PLIF粒子成像测速场仪 自适应粒子成像测速场仪（PIV） 时间分辨粒子成像测速系统(TR-PIV) 内窥式粒子成像测速系统(Endo-PIV)