• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of the American Physical Society >APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Non-isothermal bubble rise dynamics in a self-rewetting fluid
【24h】

APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Non-isothermal bubble rise dynamics in a self-rewetting fluid

机译：APS-APS流体动力学部门第70届年会-事件-自润湿流体中的非等温气泡上升动力学

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The motion of a gas bubble in a square channel with linearly-increasing temperature in the vertical direction is investigated via three-dimensional numerical simulations. The channel contains a so-called a??self-rewettinga?? fluid whose surface tension exhibits a parabolic dependence on temperature with a well-defined minimum. An open-source finite-volume fluid flow solver (Basilisk) is used with a dynamic adaptive grid refinement technique. We find that in contrast to `ordinary' fluids with linear dependence of surface tension on temperature, the buoyancy-induced upward motion of the bubble may be enhanced or retarded by a thermocapillary-driven flow depending on the location of the bubble with respect to the position where the surface tension becomes minimum. These phenomena are observed at sufficiently small Bond numbers.
机译：通过三维数值模拟研究了在垂直方向上温度呈线性增加的方形通道中气泡的运动。该频道包含一个所谓的“ self-retettinga”。表面张力对温度表现出抛物线依赖性的流体，具有确定的最小值。开源的有限体积流体流动求解器（Basilisk）与动态自适应网格细化技术一起使用。我们发现，与表面张力与温度线性相关的“普通”流体相反，浮力引起的气泡的向上运动可能由热毛细管驱动的流动增强或受阻，具体取决于气泡相对于气泡的位置。表面张力最小的位置。在足够小的键数下观察到这些现象。

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