| 孙程， 王东祥， 金海安.转盘反应器表面黏性流体液膜速度分区特性[J].轻工机械,2022,40(1):50-55 |
| 转盘反应器表面黏性流体液膜速度分区特性 |
| Velocity Zoning Characteristics of Viscous Liquid Film on Rotary Disk Reactor |
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| DOI：10.3969/j.issn.1005 2895.2022.01.009 |
| 中文关键词: 转盘反应器 液膜 速度分区 同步半径 量纲分析法 |
| 英文关键词:rotary disk reactor liquid film velocity zoning behavior synchronous radius dimensional analysis method |
| 基金项目:国家自然科学基金(51606086)。 |
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| 中文摘要: |
| 为了探究在不同的介质物性和操作参数下转盘反应器表面液膜径向速度分区特性，课题组设计并搭建了转盘反应器的实验装置；并且以甘油 水溶液为实验介质，通过激光多普勒测速仪对转盘表面液膜的径向速度进行测量。实验结果表明：随着转速和运动黏度的增加，同步区逐渐扩展到转盘中心，浇注区和加速区收缩；体积流量增加，3个分区逐渐向外迁移，浇注区和加速区扩大，同步区收缩；浇注管半径增大，浇注区在逐渐缩小，加速区逐渐扩大，但同步区不变。说明转速和运动黏度对液膜速度的分区影响大致相同，而体积流量和浇注半径的影响则不相同。课题组根据量纲分析法建立了同步区半径的预测关联式。本研究的结果可为转盘反应器的设计和优化提供一定的参考。 |
| 英文摘要: |
| In order to study the radial velocity zonation characteristics of liquid film on the surface of rotary disk reactor under different physical properties and operating parameters, an experimental device of rotary disk reactor was built to measure the radial velocity of liquid film on the surface of rotary disk by laser Doppler velocimeter with glycerin aqueous solution as the experimental medium. The experimental results show that with the increase of rotational speed and kinematic viscosity, the synchronous zone gradually expands to the center of the rotary plate, and the pouring zone and acceleration zone shrink. With the increase of volume flow, the three zones gradually migrate outward, the pouring zone and accelerating zone expand, and the synchronous zone shrink. As the casting tube radius increases, the casting area gradually shrinks and the acceleration area gradually expands, but the synchronization area remains unchanged. The results indicate that the effects of the rotational speed and kinematic viscosity on the film velocity are roughly same, while the effects of volume flow and pouring radius are different. The prediction correlation formula of synchronous region radius was established according to dimensional analysis method. The research results can provide reference for the design and optimization of rotary disk reactor. |
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