Simulation by solutal convection of a thermal plume in a confined stratified environment: application to displacement ventilation

Auban, Olivier; Lemoine, Fabrice; Vallette, P.; Fontaine, Jean-Raymond

doi:10.1016/s0017-9310(01)00117-x

Cited by 25 publications

(27 citation statements)

References 13 publications

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“…The fluid exhibits a periodic oscillatory motion known as the puffing phenomenon which is the formation and convection of vortex at the near field of the plume. Auban et al [8] presented the experiment of a thermal plume in a confined stratified environment, a situation encountered in displacement ventilation systems. Criteria permitting definition of the interface elevation and thickness were determined based on statistical processing of concentration fluctuation.…”

Section: Introductionmentioning

confidence: 99%

Behavior of thermal plumes from two-heat sources in an enclosure

Ichimiya

Saiki²

2005

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Behavior of thermal plumes from two-heat sources in an enclosure

Ichimiya

Saiki²

2005

International Journal of Heat and Mass Transfer

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“…We used the formulae proposed by Auban [3,4] and that used by Skåret [9] to test our experimental data.…”

Section: Comparison With Literature-based Resultsmentioning

confidence: 99%

“…Both Xing and Awbi [12,13] and Stymne et al [14] consider that the interface is at the altitude at which the wall temperature is locally equal to the air temperature. Alternatively, Auban [3,4] demonstrates that the interface can be located by studying statistically fluctuations in fluorescent tracer concentration measured at each point. The latter analysis is presented in Fig.…”

Section: Interface Locationmentioning

confidence: 99%

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Experimental study of thermal stratification in ventilated confined spaces

Bouzinaoui

Vallette

Lemoine

et al. 2005

International Journal of Heat and Mass Transfer

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“…3 Liquid scale model experiments 4 can solve this problem, which is one of the most commonly used methods to study air movement. It uses brine with a concentration moving in clean water, which can effectively simulate non-isothermal gas in the chamber flow state.…”

Section: Introductionmentioning

confidence: 99%

Research on the kinetic energy ratio of return air entrainment in the form of low supply–middle return in the large space of brine experiments

Wang

Huai

Huang

et al. 2015

Advances in Mechanical Engineering

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Introduced in this article is a 1:15 brine model experiment rig with an actual large space building as the research object, which provides different concentration brine for a simulation of the stratified air conditioning in the steady-state flow field featured with columnar air supply in the bottom, heat source on the ground, the central air return, and air exhaust from roof in a large space. According to the similarity theory, it is concluded that the similarity criterion numbers applied here are Reynolds number (Re) and Archimedes number (Ar) for designation of experiment rig size, choosing device type, and confirming experiment condition. In the designation of key components of experiment rig, the application of automation control makes brine recovery and recycling in the process; designation of electrical control system makes a centralized control of experiment start-stop and the adjustment of the pipeline flow, realizing automation in the whole experiment process. Particle image velocimetry testing technology is used to get velocity vector field of air return mouth area in the model under various working conditions, and also proper orthogonal decomposition method is applied to analyze flow field structure of air return mouth area and reconstruct it. Consequently, we can get a kinetic energy ratio of return air entrainment of lower air-conditioning section and upper non-air-conditioning section in large space. Experiments show that under the conditions of same air supply, indoor environment temperature difference, and height and direction of return air inlet, fastening the speed of return air suction, the entrainment of flow field around it strengthens accordingly. The entrainment of return air inlet has more kinetic energy in the lower air-conditioning section than the upper non-air-conditioning section. KeywordsUnder-floor air supply in the large space, brine model experiment, return air inlet, particle image velocimetry, proper orthogonal decomposition Date

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Simulation by solutal convection of a thermal plume in a confined stratified environment: application to displacement ventilation

Cited by 25 publications

References 13 publications

Behavior of thermal plumes from two-heat sources in an enclosure

Behavior of thermal plumes from two-heat sources in an enclosure

Experimental study of thermal stratification in ventilated confined spaces

Research on the kinetic energy ratio of return air entrainment in the form of low supply–middle return in the large space of brine experiments

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