...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Thermal engineering >Boiling in Forced Convection of Subcooled Liquid as a Method for Removing High Heat Fluxes (Review): Part 1. Characteristics, Mechanism, and Model of the Process, Heat Transfer, and Hydraulic Resistance
【24h】

Boiling in Forced Convection of Subcooled Liquid as a Method for Removing High Heat Fluxes (Review): Part 1. Characteristics, Mechanism, and Model of the Process, Heat Transfer, and Hydraulic Resistance

机译：Boiling in Forced Convection of Subcooled Liquid as a Method for Removing High Heat Fluxes (Review): Part 1. Characteristics, Mechanism, and Model of the Process, Heat Transfer, and Hydraulic Resistance

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

摘要

A review of the data on boiling of a liquid at a temperature below the saturation temperature (subcooled liquid) and on the process enabling the removal of extremely high heat fluxes is presented. The review consists of two parts. The first part describes the characteristics of the process under consideration, its phenomenological models, and the results of analysis of heat transfer and hydraulic resistance. The second part will be devoted to the analysis of studies of critical heat fluxes and heat transfer enhancement. Specific features of the process mechanism are considered, such as chaotic spatial distribution and deactivation of nucleation sites during bubble collapse and absence of a vapor phase in the flow core. The data on the characteristic sizes of bubbles and their lifetimes are given, and the evolution of the bubble shape in time is described. The Snyder?Bergles phenomenological model corresponds to the observed subcooled liquid boiling pattern best of all and offers the most plausible description of the process. It is noted that, with a decrease in the subcooling, the subcooled liquid boiling gradually loses its specific features and takes on properties typical for saturated liquid boiling. The fully developed subcooled liquid boiling is a local phenomenon whose characteristics are controlled by local process conditions (local conditions hypothesis). It is reasonable to represent the subcooled boiling heat transfer as the sum of the convective component and the boiling component q _(boil)with the heat-transfer coefficient being fit quite well by a power-law dependence on q _(boil)with an exponent of n ?=?0.65–0.70. The hydraulic resistance in the flow of a boiling subcooled liquid is close to the resistance in a nonboiling liquid flow with the same mass flowrate.

著录项

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