THE HYDRAULICS OF DOORWAY EXCHANGE FLOWS

被引：36

作者：

DALZIEL, SB

LANESERFF, GF

机构：

[1] Department of Applied Mathematics and Theoretical Physics, Cambridge, CB3 9EW, Silver Street

来源：

BUILDING AND ENVIRONMENT | 1991年 / 26卷 / 02期

关键词：

D O I：

10.1016/0360-1323(91)90019-8

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The exchange flow through an opening (such as a doorway) in a partition, separating spaces containing fluid of different densities, is described in terms of two-layer hydraulics. The approach is based on the development, by Dalziel [Ph.D. thesis, Cambridge University 1988; J. Fluid Mech. (in press)], for a two-layer system of the functional formalism of Gill [J. Fluid Mech. 80, 641-671 (1977)]. It is shown that the opening can act as a hydraulic control in a fashion analogous to a weir in single-layer channel flows. It is shown that hydraulic theory predicts the observed phenomenon that the upper (warmer) layer in doorway exchange flow is thinner than the lower (cooler) layer. The predictions for exchange rates and interface heights are compared with laboratory experiments. The effect of a forced net flow through the opening is also considered.

引用

页码：121 / 135

页数：15

共 8 条

[1]

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[2]

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[3]

Lane-Serff, Heat flow and air movement in buildings, Ph.D. thesis, (1989)

[4]

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[6]

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[7]

Henderson, Open Channel Flow, (1966)

[8]

Batchelor, An Introduction to Fluid Dynamics, (1967)

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