Turbulent forced convection of nanofluid in a heated tube: A Computational Fluid Dynamics (CFD) study / Iman Behroyan
In this study, turbulent forced convection of Cu-water nanofluid inside a horizontal pipe with a constant wall heat flux is investigated numerically. Two types of approaches are used; one is based on a single-phase model and the other is Eulerian-Eulerian two-phase models. The mass, momentum and ene...
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| Format: | Thesis |
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2013
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| Online Access: | http://studentsrepo.um.edu.my/8155/ http://studentsrepo.um.edu.my/8155/4/iman.pdf |
| _version_ | 1848773583709405184 |
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| author | Iman , Behroyan |
| author_facet | Iman , Behroyan |
| author_sort | Iman , Behroyan |
| building | UM Research Repository |
| collection | Online Access |
| description | In this study, turbulent forced convection of Cu-water nanofluid inside a horizontal pipe with a constant wall heat flux is investigated numerically. Two types of approaches are used; one is based on a single-phase model and the other is Eulerian-Eulerian two-phase models. The mass, momentum and energy equations are solved using control volume method (FVM) and commercial codes of ANSYS-Fluent. The simulation results of both models are compared to the existing experimental results. The simulation results for Cu-water nanofluid show that the homogeneous model, i.e., the single model is not able to predict the Nusselt number accurately for all particle fractions and Reynolds numbers. The two-phase model in Fluent can estimate the Nusselt number of nanofluid accurately, only with the use of reasonable effective particles thermal conductivities. The best effective particles conductivities are calculated based on trial and error method for some typical Reynolds numbers and particles volume fraction. Finally several correlations are developed to predict particles conductivity as a function of Reynolds number at each particle concentration. The general trend of correlations shows a linear increasing trend of the particles conductivity versus the Reynolds number. |
| first_indexed | 2025-11-14T13:44:43Z |
| format | Thesis |
| id | um-8155 |
| institution | University Malaya |
| institution_category | Local University |
| last_indexed | 2025-11-14T13:44:43Z |
| publishDate | 2013 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | um-81552019-07-22T20:42:17Z Turbulent forced convection of nanofluid in a heated tube: A Computational Fluid Dynamics (CFD) study / Iman Behroyan Iman , Behroyan T Technology (General) TJ Mechanical engineering and machinery In this study, turbulent forced convection of Cu-water nanofluid inside a horizontal pipe with a constant wall heat flux is investigated numerically. Two types of approaches are used; one is based on a single-phase model and the other is Eulerian-Eulerian two-phase models. The mass, momentum and energy equations are solved using control volume method (FVM) and commercial codes of ANSYS-Fluent. The simulation results of both models are compared to the existing experimental results. The simulation results for Cu-water nanofluid show that the homogeneous model, i.e., the single model is not able to predict the Nusselt number accurately for all particle fractions and Reynolds numbers. The two-phase model in Fluent can estimate the Nusselt number of nanofluid accurately, only with the use of reasonable effective particles thermal conductivities. The best effective particles conductivities are calculated based on trial and error method for some typical Reynolds numbers and particles volume fraction. Finally several correlations are developed to predict particles conductivity as a function of Reynolds number at each particle concentration. The general trend of correlations shows a linear increasing trend of the particles conductivity versus the Reynolds number. 2013-06 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/8155/4/iman.pdf Iman , Behroyan (2013) Turbulent forced convection of nanofluid in a heated tube: A Computational Fluid Dynamics (CFD) study / Iman Behroyan. Masters thesis, University of Malaya. http://studentsrepo.um.edu.my/8155/ |
| spellingShingle | T Technology (General) TJ Mechanical engineering and machinery Iman , Behroyan Turbulent forced convection of nanofluid in a heated tube: A Computational Fluid Dynamics (CFD) study / Iman Behroyan |
| title | Turbulent forced convection of nanofluid in a heated tube: A Computational Fluid Dynamics (CFD) study / Iman Behroyan |
| title_full | Turbulent forced convection of nanofluid in a heated tube: A Computational Fluid Dynamics (CFD) study / Iman Behroyan |
| title_fullStr | Turbulent forced convection of nanofluid in a heated tube: A Computational Fluid Dynamics (CFD) study / Iman Behroyan |
| title_full_unstemmed | Turbulent forced convection of nanofluid in a heated tube: A Computational Fluid Dynamics (CFD) study / Iman Behroyan |
| title_short | Turbulent forced convection of nanofluid in a heated tube: A Computational Fluid Dynamics (CFD) study / Iman Behroyan |
| title_sort | turbulent forced convection of nanofluid in a heated tube: a computational fluid dynamics (cfd) study / iman behroyan |
| topic | T Technology (General) TJ Mechanical engineering and machinery |
| url | http://studentsrepo.um.edu.my/8155/ http://studentsrepo.um.edu.my/8155/4/iman.pdf |