• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Regular and chaotic flow patterns upon impulsive spin-up of a Rayleigh-Benard convection cell
【24h】

Regular and chaotic flow patterns upon impulsive spin-up of a Rayleigh-Benard convection cell

机译：Rayleigh-Benard凸细胞脉冲旋转时的规则和混沌流动模式

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

摘要

A cylindrical, completely enclosed Rayleigh-Benard convection cell with radius-to-height ratio (Gamma)=(1/2) is subjected to impulsive spin-up about its vertical axis. The authors study produces TLC (thermochromic liquid crystal) temperature measurements and PIV (particle image velocimetry) velocity reconstruction of the transient state between the two regimes of turbulent convection corresponding to the cell at rest and in steady rotation. The most persistent transient feature emerging is a sharply defined ringlike pattern characterized by a decrease in temperature and high azimuthal shear. The latter leads to formation of Kelvin-Helmholz vortices. Initially azimuthally regular, the pattern of these vortices loses its regularity and thus completes the transition to rotating convection state.

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