...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Experimental study on transition characteristics of theremo-solutocapillary convection under buoyancy
【24h】

Experimental study on transition characteristics of theremo-solutocapillary convection under buoyancy

机译：浮力下Theremo-Lutocapillary对流转变特性的实验研究

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

An experimental study on the spatial and temporal evolution of thermo-solutocapillary convection in liquid bridges under buoyancy effect is conducted by Particle Image Velocimetry (PIV). In this experiment, 5cst silicone oil and the n-hexane are used as the solvent and solute, respectively. The velocity field for the steady thermocapillary-buoyancy convection is investigated firstly, and then the transitional characteristic of thermo-soluto-capillary convection under buoyancy effect is analyzed as well. Experimental results show that, in the steady thermocapillary-buoyancy convection of liquid bridge with volume ratio Vr = 0.9 or Vr = 0.8, the vortex center of thermocapillary convection moves gradually toward the free surface with the increasing temperature difference, and the vortex evolves from a semilune (sic) at a small temperature difference to a sickle-shaped "(sic)" at a large temperature difference. When the volume ratio is relatively large (Vr = 0.9), as the temperature difference increases, the connection line for velocity values at monitoring particles at the intermediate height of liquid bridge R-(X,( 1.5)) shows a weak monotonicity. However, when the volume ratio is decreased (Vr = 0.8), the monotonicity is significantly better than that at large volume ratio. When Vr is 0.6, the temperature difference affects weakly the vortex position of thermocapillary convection, and the shape of the vortex is always the semilunar-"(sic)". The oscillatory mechanism and flow pattern of thermo-solutocapillary convection under gravity are different at different volume ratios. When the volume ratio is large (Vr = 0.9), vortices of buoyancy convection and thermo-solutocapillary convection appear an oscillatory pattern of mutual wane-wax-a "synchronous" oscillatory type. When Vr is 0.6, vortices of thermo-solutocapillary convection show an asynchronous feature of wane-wax-an "asynchronous" oscillatory type.
机译：粒子图像速度（PIV）进行了浮力效应下液体桥梁热 - 岩杂化对流的空间和时间演化的实验研究。在该实验中，5cst硅油和正己烷分别用作溶剂和溶质。首先研究了稳定热血统 - 浮力对流的速度场，并分析了浮力效应下的热溶毛细管对流的过渡特征。实验结果表明，在具有体积比VR = 0.9或VR = 0.8的液体桥的稳定热血管浮力对流中，热量施加的涡流中心朝向自由表面逐渐移动，随着温差的增加，涡流从A中发展半沉默（SiC）在较大的温差下的镰刀形“（SiC）”。当体积比相对较大（VR = 0.9）时，随着温度差的增加，用于液态桥R-（x，（1.5））中间高度的监测颗粒处的速度值的连接线显示出弱的单调性。然而，当体积比减少（VR = 0.8）时，单调性明显优于大体积比。当VR为0.6时，温度差会影响热量捕集的涡旋位置，涡旋的形状始终是半鲁纳 - “（SIC）”。在重力下的热溶胶对流的振荡机制和流动模式不同于不同体积比。当体积比大（VR = 0.9）时，浮力对流的涡流和热 - 溶剂杂化对流的涡流出现了相互WANE-WAX-A“同步”振荡类型的振荡图案。当VR为0.6时，热-Solocapillary对流的涡流显示了WANE-WAX-A“异步”振荡类型的异步特征。

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