UM  > Faculty of Science and Technology  > DEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Development of a flow regime map for a horizontal pipe with the multi-classification Support Vector Machines
Tam L.M.1; Ghajar A.J.2; Tam H.K.3; Tam S.C.4
2009-09-17
Conference NameASME Heat Transfer Summer Conference
Source Publication2008 Proceedings of the ASME Summer Heat Transfer Conference, HT 2008
Volume1
Pages537-547
Conference DateAUG 10-14, 2008
Conference PlaceJacksonville, FL
Abstract

For horizontal circular pipes under uniform wall heat flux boundary condition and three different inlet configurations (reentrant, square-edged, bell-mouth), Ghajar and Tam (1995) developed flow regime maps for the determination of the boundary between single-phase forced and mixed convection using experimental data of Ghajar and Tam (1994). Based on the ratio of the local peripheral heat transfer coefficient at the top and the bottom, the heat transfer data was classified as either forced or mixed convection among the different flow regimes. The forced-mixed convection boundary was then obtained by empirical correlations. From the flow maps, heat transfer correlations for different flow regimes were recommended. Recently Trafalis et al. (2005) used the Multi-class Support Vector Machines (SVM) method to classify vertical and horizontal two-phase flow regimes in 4 pipes with good accuracy. In this study, the SVM method was applied to the single-phase experimental data of Ghajar and Tam (1994) and new flow regime maps were developed. Five flow regimes (forced turbulent, forced transition, mixed transition, forced laminar, mixed laminar) were identified in the flow maps using Reynolds and Rayleigh numbers as the identifying parameters. The flow regimes on the boundaries of the new maps were represented by the SVM decision functions. The results show that the new flow regime maps for the three types of inlets can classify the forced and mixed convection experimental data in different flow regimes with good accuracy. 

DOIhttp://doi.org/10.1115/HT2008-56094
URLView the original
Indexed BySCI
Language英语
WOS Research AreaThermodynamics ; Engineering
WOS SubjectThermodynamics ; Engineering, Mechanical
WOS IDWOS:000265972700069
Fulltext Access
Citation statistics
Cited Times [WOS]:5   [WOS Record]     [Related Records in WOS]
Document TypeConference paper
CollectionDEPARTMENT OF ELECTROMECHANICAL ENGINEERING
DEPARTMENT OF MATHEMATICS
Affiliation1.Department of Electromechanical Engineering, Faculty of Science and Technology, Institute for the Development and Quality, Av. Padre Tomás Pereira, Taipa, Macau, China
2.School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, OK, United States
3.Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Av. Padre Tomás Pereira, Taipa, Macau, China
4.Department of Mathematics, Faculty of Science and Technology, University of Macau, Av. Padre Tomás Pereira, Taipa, Macau, China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Tam L.M.,Ghajar A.J.,Tam H.K.,et al. Development of a flow regime map for a horizontal pipe with the multi-classification Support Vector Machines[C],2009:537-547.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Tam L.M.]'s Articles
[Ghajar A.J.]'s Articles
[Tam H.K.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tam L.M.]'s Articles
[Ghajar A.J.]'s Articles
[Tam H.K.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tam L.M.]'s Articles
[Ghajar A.J.]'s Articles
[Tam H.K.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.