| 1. | They also impede backmixing of sand .
同时也可防止砂子的返混。 |
| 2. | Solids may often be represented by backmix flow .
固体颗粒常常可以表示为返混流。 |
| 3. | These findings show that flow in fluidized beds lies squarely between the extremes of plug and backmix flow .
这些结果说明了流化床内流动恰好位于活塞流与返混流两个极端之间。 |
| 4. | All but plug and backmix flow require rather sophisticated mathematical analysis to yield the necessary information .
除了活塞流与返混流之外，其它都需要比较深的数学分析，才能获得必要的资料。 |
| 5. | The calculation of the reaction with confusion in axial direction
有轴向返混时反应物浓度的计算 |
| 6. | By integrating the backmixing theory of reaction engineering with predictive model of river pollution in environmental quality assessment study , the predictively longitudinal dispersion model of river quality was got and analyzed
摘要将反应工程学的返混理论与环境质量评价学的河水污染预测模型结合，得出了河流水质预测纵向扩散模型，并给出了解析解。 |
| 7. | Simulating results reveal that hydrodynamics of catalysts in riser reactor is very complex due to the effect of injection and catalysts backmix dramatically near the nozzle , reaction products unevenly distributie along the riser height , there exists apparently temperature gap between gas - phase and solid - phase near the nozzle and the temperture of two phase is nearly equal at middle - top part
模拟结果表明，由于原料油射流的影响，提升管反应器内催化剂颗粒的流动特征非常复杂，在喷嘴附近的催化剂颗粒存在明显的滑落返混；裂化产物浓度沿提升管存在非均匀分布；气粒两相间温差在喷嘴附近显著，在中上部气粒两相温度几乎相等。 |
| 8. | The effect of air distributor on the flow fields was studied with emphasis . the working conditions of the bubble column simulated in the numerical study were as same as in the experiments . the velocity profile at axial direction showed a peek in the center , and a backward flow near the wall when usl / usg < 19 . 6
鼓泡塔内轴向液相速度的径向分布呈塔中心峰值、壁面附近倒流形式，且与气相折算速度大小有关，当液相折算速度一定时，随气相折算速度增大而愈加陡峭，返混也剧烈。 |
