Non-Boussinesq turbulent buoyant jet of a low-density gas leaks into high-density ambient

Handle URI:
http://hdl.handle.net/10754/561580
Title:
Non-Boussinesq turbulent buoyant jet of a low-density gas leaks into high-density ambient
Authors:
El-Amin, Mohamed ( 0000-0002-1099-2299 ) ; Sun, Shuyu ( 0000-0002-3078-864X ) ; Kanayama, Hiroshi
Abstract:
In this article, we study the problem of low-density gas jet injected into high-density ambient numerically which is important in applications such as fuel injection and leaks. It is assumed that the local rate of entrainment is consisted of two components; one is the component of entrainment due to jet momentum while the other is the component of entrainment due to buoyancy. The integral models of the mass, momentum and concentration fluxes are obtained and transformed to a set of ordinary differential equations using some similarity transformations. The resulting system is solved to determine the centerline quantities which are used to get the mean axial velocity, mean concentration and mean density of the jet. Therefore, the centerline and mean quantities are used together with the governing equation to determine some important turbulent quantities such as, cross-stream velocity, Reynolds stress, velocity- concentration correlation, turbulent eddy viscosity and turbulent eddy diffusivity. Throughout this paper the developed model is verified by comparing the present results with experimental results and jet/plume theory from the literature. © 2010 Elsevier Inc. All rights reserved.
KAUST Department:
Computational Transport Phenomena Lab; Physical Sciences and Engineering (PSE) Division; Environmental Science and Engineering Program
Publisher:
Elsevier BV
Journal:
Applied Mathematics and Computation
Issue Date:
Dec-2010
DOI:
10.1016/j.amc.2010.09.035
Type:
Article
ISSN:
00963003
Appears in Collections:
Articles; Environmental Science and Engineering Program; Physical Sciences and Engineering (PSE) Division; Computational Transport Phenomena Lab

Full metadata record

DC FieldValue Language
dc.contributor.authorEl-Amin, Mohameden
dc.contributor.authorSun, Shuyuen
dc.contributor.authorKanayama, Hiroshien
dc.date.accessioned2015-08-02T09:14:40Zen
dc.date.available2015-08-02T09:14:40Zen
dc.date.issued2010-12en
dc.identifier.issn00963003en
dc.identifier.doi10.1016/j.amc.2010.09.035en
dc.identifier.urihttp://hdl.handle.net/10754/561580en
dc.description.abstractIn this article, we study the problem of low-density gas jet injected into high-density ambient numerically which is important in applications such as fuel injection and leaks. It is assumed that the local rate of entrainment is consisted of two components; one is the component of entrainment due to jet momentum while the other is the component of entrainment due to buoyancy. The integral models of the mass, momentum and concentration fluxes are obtained and transformed to a set of ordinary differential equations using some similarity transformations. The resulting system is solved to determine the centerline quantities which are used to get the mean axial velocity, mean concentration and mean density of the jet. Therefore, the centerline and mean quantities are used together with the governing equation to determine some important turbulent quantities such as, cross-stream velocity, Reynolds stress, velocity- concentration correlation, turbulent eddy viscosity and turbulent eddy diffusivity. Throughout this paper the developed model is verified by comparing the present results with experimental results and jet/plume theory from the literature. © 2010 Elsevier Inc. All rights reserved.en
dc.publisherElsevier BVen
dc.subjectBuoyanten
dc.subjectJeten
dc.subjectLow-density gasen
dc.subjectNon-Boussinesqen
dc.subjectSimilarityen
dc.subjectTurbulenten
dc.titleNon-Boussinesq turbulent buoyant jet of a low-density gas leaks into high-density ambienten
dc.typeArticleen
dc.contributor.departmentComputational Transport Phenomena Laben
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.identifier.journalApplied Mathematics and Computationen
dc.contributor.institutionDepartment of Mechanical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japanen
kaust.authorEl-Amin, Mohameden
kaust.authorSun, Shuyuen
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