• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >The effect of a surfactant monolayer on oxygen transfer across an air/water interface during mixed convection
【24h】

The effect of a surfactant monolayer on oxygen transfer across an air/water interface during mixed convection

机译：表面活性剂单层对混合对流过程中氧气通过空气/水界面的转移的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A set of laboratory experiments are presented that reveal the effect of a surfactant monolayer on the transport of oxygen across an air/water interface during mixed convection conditions. The experiments were conducted in a wind/water tunnel where forced convection was imposed via the air flow, and natural convection by heating the water bulk above the air temperature, resulting in mixed convection conditions. The data acquired during these experiments were used to develop a parameterization between the Sherwood number for oxygen transport Sh and the Reynolds Re and Rayleigh Ra numbers. This parameterization was obtained for the case of a clean water surface and for a water surface covered with a surfactant monolayer. The data reveal that, at a given Ra and Re, the presence of a surfactant monolayer reduces Sh by approximately one order of magnitude. The elasticity of the air/water interface which results from the presence of a surfactant is used to explain these results. The data also show that Sh was not sensitive to Re. For both the clean and surfactant cases, Sh increases with Ra.
机译：提出了一组实验室实验，揭示了表面活性剂单层对混合对流条件下氧气通过空气/水界面的传输的影响。实验在风/水隧道中进行，通过空气流强制对流，通过将水团加热到高于空气温度进行自然对流，从而产生混合对流条件。在这些实验中获得的数据用于在氧输运Sh的Sherwood数与Reynolds Re和Rayleigh Ra数之间建立参数化。对于清洁的水表面和被表面活性剂单层覆盖的水表面，可以获得该参数化。数据表明，在给定的Ra和Re下，表面活性剂单层的存在将Sh降低了大约一个数量级。由表面活性剂的存在引起的空气/水界面的弹性被用来解释这些结果。数据还表明，Sh对Re不敏感。对于清洁和表面活性剂，Sh随Ra增大。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号