Large Eddy Simulation in Duct Flow

In this paper, the problem of developing turbulent flow in rectangular duct is investigated by obtaining numerical results of the velocity profiles in duct by using large eddy simulation model in two dimensions with different Reynolds numbers, filter equations and mesh sizes. Reynolds numbers range...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jalal M. Jalil, Ihab Omar Abbas
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2017
Materias:	Large-eddy simulation turbulence model computational fluid-dynamics Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/551a02b196e7464fa594f7308687fe6a
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:551a02b196e7464fa594f7308687fe6a
record_format	dspace
spelling	oai:doaj.org-article:551a02b196e7464fa594f7308687fe6a2021-12-02T05:46:59ZLarge Eddy Simulation in Duct Flow1818-11712312-0789https://doaj.org/article/551a02b196e7464fa594f7308687fe6a2017-12-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/294https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 In this paper, the problem of developing turbulent flow in rectangular duct is investigated by obtaining numerical results of the velocity profiles in duct by using large eddy simulation model in two dimensions with different Reynolds numbers, filter equations and mesh sizes. Reynolds numbers range from (11,000) to (110,000) for velocities (1 m/sec) to (50 m/sec) with (56×56), (76×76) and (96×96) mesh sizes with different filter equations. The numerical results of the large eddy simulation model are compared with k-ε model and analytic velocity distribution and validated with experimental data of other researcher. The large eddy simulation model has a good agreement with experimental data for high Reynolds number with the first, second and third mesh sizes and the agreement increase near the wall of the duct. The percentage error for the large eddy simulation model with experimental data of the (56×56) mesh size is less than 18 % and for the (76×76) mesh size is also less than 17% and for the (96×96) mesh size is less than 16 %. The large eddy simulation model show high stability and do not need extra differential equation like the k-ε model and a great saving in time and computer memory was achieved. Jalal M. JalilIhab Omar AbbasAl-Khwarizmi College of Engineering – University of BaghdadarticleLarge-eddy simulationturbulence modelcomputational fluid-dynamicsChemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 12, Iss 2 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Large-eddy simulation turbulence model computational fluid-dynamics Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Large-eddy simulation turbulence model computational fluid-dynamics Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Jalal M. Jalil Ihab Omar Abbas Large Eddy Simulation in Duct Flow
description	In this paper, the problem of developing turbulent flow in rectangular duct is investigated by obtaining numerical results of the velocity profiles in duct by using large eddy simulation model in two dimensions with different Reynolds numbers, filter equations and mesh sizes. Reynolds numbers range from (11,000) to (110,000) for velocities (1 m/sec) to (50 m/sec) with (56×56), (76×76) and (96×96) mesh sizes with different filter equations. The numerical results of the large eddy simulation model are compared with k-ε model and analytic velocity distribution and validated with experimental data of other researcher. The large eddy simulation model has a good agreement with experimental data for high Reynolds number with the first, second and third mesh sizes and the agreement increase near the wall of the duct. The percentage error for the large eddy simulation model with experimental data of the (56×56) mesh size is less than 18 % and for the (76×76) mesh size is also less than 17% and for the (96×96) mesh size is less than 16 %. The large eddy simulation model show high stability and do not need extra differential equation like the k-ε model and a great saving in time and computer memory was achieved.
format	article
author	Jalal M. Jalil Ihab Omar Abbas
author_facet	Jalal M. Jalil Ihab Omar Abbas
author_sort	Jalal M. Jalil
title	Large Eddy Simulation in Duct Flow
title_short	Large Eddy Simulation in Duct Flow
title_full	Large Eddy Simulation in Duct Flow
title_fullStr	Large Eddy Simulation in Duct Flow
title_full_unstemmed	Large Eddy Simulation in Duct Flow
title_sort	large eddy simulation in duct flow
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2017
url	https://doaj.org/article/551a02b196e7464fa594f7308687fe6a
work_keys_str_mv	AT jalalmjalil largeeddysimulationinductflow AT ihabomarabbas largeeddysimulationinductflow
_version_	1718400228776738816

Large Eddy Simulation in Duct Flow

Ejemplares similares