Buoyant back-layering and the critical condition for preventing back-layering fluid in inclined tunnels under natural ventilation: Brine water experiments

Dong Yang; Yao Ding; Tao Du; Shaohua Mao; Zhongjie Zhang

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Buoyant back-layering and the critical condition for preventing back-layering fluid in inclined tunnels under natural ventilation: Brine water experiments

机译：浮力背部分层和防止倾斜隧道背层流体在自然通风下的临界条件：盐水实验

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?Brine water experiments are performed to study tunnel thermal back-layering.

?The back-layering length is independent of buoyancy flux under natural ventilation.

?Critical velocity can be achieved in a naturally ventilated tunnel.

?Critical condition for preventing back-layering may be autonomously reached.

?The critical condition is mainly dependent of source location.

Abstract

The dynamics of back-layering flow induced by a continuous buoyant release in a naturally ventilated inclined tunnel are investigated. The back-layering length and the density difference between the buoyant back-layering and the ambient flow are investigated using brine water experiments. The back-layering length is independent of buoyancy flux of the releasing source in such a configuration; however, the density difference between th

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亮点

？进行盐水水实验，以研究隧道热背部分层。

？背部分层长度是独立于自然通风下的浮力助焊剂。

？可以在天然通风的隧道中实现关键速度。

防止背部分层的关键条件自动达到。

？关键条件主要是依赖于源位置。

抽象

在天然通风倾斜隧道中连续浮力释放引起的背分层流动的动态调查。使用盐水实验研究了浮力背层和环境流之间的背层长度和密度差。背分层长度与这种配置中的释放源的浮力通量无关;但是，TH之间的密度差异

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来源
《Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics》 |2018年第2018期|共11页
作者
Dong Yang; Yao Ding; Tao Du; Shaohua Mao; Zhongjie Zhang;
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作者单位

Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of Education Chongqing University;

Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of Education Chongqing University;

Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of Education Chongqing University;

China Ship Development and Design Center;

Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of Education Chongqing University;

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原文格式 PDF
正文语种 eng
中图分类流体力学;
关键词
Inclined tunnel; Buoyant back-layering; Flow dynamics; Critical condition; Back-layering length; Brine water experiments;

机译：倾斜的隧道;浮力背部分层;流动动态;临界条件;背部分层长度;盐水实验;

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机译：浮力背部分层和防止倾斜隧道背层流体在自然通风下的临界条件：盐水实验
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Buoyant back-layering and the critical condition for preventing back-layering fluid in inclined tunnels under natural ventilation: Brine water experiments

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