Numerical Analysis of Water Forced Convection in Channels with Differently Shaped Transverse Ribs
Heat transfer enhancement technology has the aim of developing more efficient systems as demanded in many applications. An available passive method is represented by the employ of rough surfaces. Transversal turbulators enhance the heat transfer rate by reducing the thermal resistance near surfaces,...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2011-01-01
|
| Series: | Journal of Applied Mathematics |
| Online Access: | http://dx.doi.org/10.1155/2011/323485 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850178785470578688 |
|---|---|
| author | Oronzio Manca Sergio Nardini Daniele Ricci |
| author_facet | Oronzio Manca Sergio Nardini Daniele Ricci |
| author_sort | Oronzio Manca |
| collection | DOAJ |
| description | Heat transfer enhancement technology has the aim of developing more efficient systems as demanded in many applications. An available passive method is represented by the employ of rough surfaces. Transversal turbulators enhance the heat transfer rate by reducing the thermal resistance near surfaces, because of the improved local turbulence; on the other hand, higher losses are expected.
In this paper, a numerical investigation is carried out on turbulent water forced convection in a ribbed channel. Its external walls are heated by a constant heat flux. Several arrangements of ribs in terms of height, width, and shape are analyzed. The aim is to find the optimal configuration in terms of high heat transfer coefficients and low losses. The maximum average Nusselt numbers are evaluated for dimensionless pitches of 6, 8, and 10 according to the shape while the maximum friction factors are in the range of pitches from 8 to 10. |
| format | Article |
| id | doaj-art-c55833cb4eb14a7dbbd0cf2989fddd85 |
| institution | OA Journals |
| issn | 1110-757X 1687-0042 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Applied Mathematics |
| spelling | doaj-art-c55833cb4eb14a7dbbd0cf2989fddd852025-08-20T02:18:39ZengWileyJournal of Applied Mathematics1110-757X1687-00422011-01-01201110.1155/2011/323485323485Numerical Analysis of Water Forced Convection in Channels with Differently Shaped Transverse RibsOronzio Manca0Sergio Nardini1Daniele Ricci2Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli Studi di Napoli, Real Casa dell'Annunziata, Via Roma, 29, 81031 Aversa, ItalyDipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli Studi di Napoli, Real Casa dell'Annunziata, Via Roma, 29, 81031 Aversa, ItalyDipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli Studi di Napoli, Real Casa dell'Annunziata, Via Roma, 29, 81031 Aversa, ItalyHeat transfer enhancement technology has the aim of developing more efficient systems as demanded in many applications. An available passive method is represented by the employ of rough surfaces. Transversal turbulators enhance the heat transfer rate by reducing the thermal resistance near surfaces, because of the improved local turbulence; on the other hand, higher losses are expected. In this paper, a numerical investigation is carried out on turbulent water forced convection in a ribbed channel. Its external walls are heated by a constant heat flux. Several arrangements of ribs in terms of height, width, and shape are analyzed. The aim is to find the optimal configuration in terms of high heat transfer coefficients and low losses. The maximum average Nusselt numbers are evaluated for dimensionless pitches of 6, 8, and 10 according to the shape while the maximum friction factors are in the range of pitches from 8 to 10.http://dx.doi.org/10.1155/2011/323485 |
| spellingShingle | Oronzio Manca Sergio Nardini Daniele Ricci Numerical Analysis of Water Forced Convection in Channels with Differently Shaped Transverse Ribs Journal of Applied Mathematics |
| title | Numerical Analysis of Water Forced Convection in Channels with Differently Shaped Transverse Ribs |
| title_full | Numerical Analysis of Water Forced Convection in Channels with Differently Shaped Transverse Ribs |
| title_fullStr | Numerical Analysis of Water Forced Convection in Channels with Differently Shaped Transverse Ribs |
| title_full_unstemmed | Numerical Analysis of Water Forced Convection in Channels with Differently Shaped Transverse Ribs |
| title_short | Numerical Analysis of Water Forced Convection in Channels with Differently Shaped Transverse Ribs |
| title_sort | numerical analysis of water forced convection in channels with differently shaped transverse ribs |
| url | http://dx.doi.org/10.1155/2011/323485 |
| work_keys_str_mv | AT oronziomanca numericalanalysisofwaterforcedconvectioninchannelswithdifferentlyshapedtransverseribs AT sergionardini numericalanalysisofwaterforcedconvectioninchannelswithdifferentlyshapedtransverseribs AT danielericci numericalanalysisofwaterforcedconvectioninchannelswithdifferentlyshapedtransverseribs |