Effects of corrugation angle on developing laminar forced convection and entropy generation in a wavy channel

Autor:	Tzu-Hsiang Ko
Rok vydání:	2007
Předmět:	Fluid Flow and Transfer Processes Materials science Reynolds number Laminar flow Mechanics Condensed Matter Physics Secondary flow Nusselt number Pipe flow Vortex Forced convection Physics::Fluid Dynamics symbols.namesake Classical mechanics Heat transfer symbols
Zdroj:	Heat and Mass Transfer. 44:261-271
ISSN:	1432-1181 0947-7411
Popis:	This paper investigates the effects of corrugation angle (β) on the developing laminar forced convection and entropy generation in a wavy channel with numerical methods. The studied cases cover β = 10-, 15-, 20-, 25-, 30- and 35°, whilst Reynolds number (Re) is varied as 100, 200 and 400. The analyzed flow characteristics include recirculating flows, secondary vortices, temperature distributions, and friction factor as well as Nusselt number. In particular, the effects of corrugation angle on the distributions and magnitudes of local entropy generation resulted from frictional irreversibility (S ′′′ ) and heat transfer irreversibility (S ′′′ ) are separately discussed in detail in the present paper. Based on the minimal entropy generation principle, the optimal corrugation angle and favorable Re are reported.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::994926ae3c18d9c43e46616cd2980299 https://doi.org/10.1007/s00231-007-0243-x Zobrazit plný text záznamu Full text from SpringerLink