Abstract: The jet penetration depth and gas velocity profiles were experimentally studied using a measurement system consisting of multi-Pitot-tube,mini-pressure transducer,and magnetic valves.It is found that the Potential core height of a jet for Geldarts B or D particles is much greater than that for Geldarts A particles and the jet penetration depth increases with the decrease of mean particle density and particle size for both monocomponent and binary mixtures.On the basis of the theoretical analysis,an semi-empirical equation including the modified Froude number and the Stokes number can be satisfactorily used to estimate the jet penetration depth in gas-solid jetted fluidized beds.

摘要： 采用多路毕托管、电磁阀、微压传感器检测技术，考察了气固射流流化床中GeldartB、D类的单一物料及混合物的射流深度．指出物料的平均密度或粒径的增加都会造成射流深度的降低；得到的包括气团惯性准数在内的经验关联式能成功地预测多组分床层的射流深度．