【摘要】 使用ＰＣ－４光导纤维测浓仪测定了二维射流床中的空隙率分布，并考查了静床高、射流管径对空隙率分布的影响，发现在射流喷口上方２．５ｃｍ～７．５ｃｍ处有一最大空隙率分布区。利用空隙率分布可定义并求出射流深度，其值与Ｙａｎｇ的关联式计算值吻合。更多还原

【Abstract】 Porosity distribution was measured in a two-dimensional fluidized bed with a jet by PC-4 fiber optic probe.There was a region of maximum porosity at a level 2.5cm～7. 5cm above jet inlet. Expeiments proved that static height and nozzle diameter had some effects on porosity distribution. Based on voidage distribution, the penetration depth was defined and calcutated, and the results accorded with the penetration depth from the Yang’s correlation.更多还原