Effect of porous partition height on thermal performance of a ventilated cavity using LBMMRT

The objective of this work is to study the effect of the thickness of a porous separation on the thermal performance in a cavity with displacement ventilation. The cold air jet enters and exits through two openings located in the lower and upper parts of the left wall and the right wall respectively...

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Autores principales:	Hireche Zouhira, Himrane Nabil, Nasseri Lyes, Ameziani Djamel Eddine
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/ef3bd52738f549728aacd28b359b81b5
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spelling	oai:doaj.org-article:ef3bd52738f549728aacd28b359b81b52021-11-12T11:44:34ZEffect of porous partition height on thermal performance of a ventilated cavity using LBMMRT2267-124210.1051/e3sconf/202132102007https://doaj.org/article/ef3bd52738f549728aacd28b359b81b52021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/97/e3sconf_icchmt2021_02007.pdfhttps://doaj.org/toc/2267-1242The objective of this work is to study the effect of the thickness of a porous separation on the thermal performance in a cavity with displacement ventilation. The cold air jet enters and exits through two openings located in the lower and upper parts of the left wall and the right wall respectively. The other horizontal walls are also adiabatic. The hydrodynamic and thermal characteristics of the transfer were studied for three configurations with the same aspect ratio L/H=2. The height Hp of the porous separation was varied between 0.2 and 0.8 where is placed in the center of the cavity. The transfer rates on the active wall for the thicknesses were studied for different permeability therefore different Darcy numbers varying over an interval:10-6≤Da≤10. The dimensionless Rayleigh and Reynolds numbers were taken from the rows: 10≤Ra≤106 and 50≤Re≤500. The governing equations of momentum and energy were solved by the Lettice Boltzmann Multiple Relaxation Time Method (LB-MRT) D2Q9 for the velocity field and D2Q5 for the temperature field. In order to take into account the introduction of the porous medium, an additional term is added to the standard LB equations based on the generalized model (Darcy model extended to Brinkman-Forchheimer).Hireche ZouhiraHimrane NabilNasseri LyesAmeziani Djamel EddineEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 321, p 02007 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Hireche Zouhira Himrane Nabil Nasseri Lyes Ameziani Djamel Eddine Effect of porous partition height on thermal performance of a ventilated cavity using LBMMRT
description	The objective of this work is to study the effect of the thickness of a porous separation on the thermal performance in a cavity with displacement ventilation. The cold air jet enters and exits through two openings located in the lower and upper parts of the left wall and the right wall respectively. The other horizontal walls are also adiabatic. The hydrodynamic and thermal characteristics of the transfer were studied for three configurations with the same aspect ratio L/H=2. The height Hp of the porous separation was varied between 0.2 and 0.8 where is placed in the center of the cavity. The transfer rates on the active wall for the thicknesses were studied for different permeability therefore different Darcy numbers varying over an interval:10-6≤Da≤10. The dimensionless Rayleigh and Reynolds numbers were taken from the rows: 10≤Ra≤106 and 50≤Re≤500. The governing equations of momentum and energy were solved by the Lettice Boltzmann Multiple Relaxation Time Method (LB-MRT) D2Q9 for the velocity field and D2Q5 for the temperature field. In order to take into account the introduction of the porous medium, an additional term is added to the standard LB equations based on the generalized model (Darcy model extended to Brinkman-Forchheimer).
format	article
author	Hireche Zouhira Himrane Nabil Nasseri Lyes Ameziani Djamel Eddine
author_facet	Hireche Zouhira Himrane Nabil Nasseri Lyes Ameziani Djamel Eddine
author_sort	Hireche Zouhira
title	Effect of porous partition height on thermal performance of a ventilated cavity using LBMMRT
title_short	Effect of porous partition height on thermal performance of a ventilated cavity using LBMMRT
title_full	Effect of porous partition height on thermal performance of a ventilated cavity using LBMMRT
title_fullStr	Effect of porous partition height on thermal performance of a ventilated cavity using LBMMRT
title_full_unstemmed	Effect of porous partition height on thermal performance of a ventilated cavity using LBMMRT
title_sort	effect of porous partition height on thermal performance of a ventilated cavity using lbmmrt
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/ef3bd52738f549728aacd28b359b81b5
work_keys_str_mv	AT hirechezouhira effectofporouspartitionheightonthermalperformanceofaventilatedcavityusinglbmmrt AT himranenabil effectofporouspartitionheightonthermalperformanceofaventilatedcavityusinglbmmrt AT nasserilyes effectofporouspartitionheightonthermalperformanceofaventilatedcavityusinglbmmrt AT amezianidjameleddine effectofporouspartitionheightonthermalperformanceofaventilatedcavityusinglbmmrt
_version_	1718430591310888960

Effect of porous partition height on thermal performance of a ventilated cavity using LBMMRT

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