Thermal convection for a thermodependent herschel-bulkley fluid in an annular duct

Autor:	C. Nouar, M. Lebouché
Rok vydání:	1996
Předmět:	Fluid Flow and Transfer Processes Physics Convection Convective heat transfer Thermodynamics Herschel–Bulkley fluid Mechanics Condensed Matter Physics Non-Newtonian fluid Physics::Fluid Dynamics Heat flux Heat transfer Thermal Fluid dynamics
Zdroj:	Heat and Mass Transfer. 31:257-267
ISSN:	1432-1181 0947-7411
DOI:	10.1007/bf02328618
Popis:	This article presents a numerical and experimental investigation of the thermal convection for a thermodependent Herschel-Bulkley fluid in an annular duct under the conditions of a uniform heat flux density on the outer wall and an insulated inner wall. In the numerical analysis, it is assumed that: (i) the rheological behavior of the fluid can be expressed through the Herschel-Bulkley law:\(\tau = \tau _s + K\dot \gamma ^n \); (ii) the flow is fully developed at the inlet; (iii) all fluid properties except consistency indexK are constant. TheK−T relation used isK=K0exp(−bT). The results obtained enable us to characterize completely the dynamical and thermal fields. The numerical solution is in good agreement with the experimental data, showing the reasonableness of the computed results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ef6495ba46c6f91a7d66a94b87329a40 https://doi.org/10.1007/bf02328618 Zobrazit plný text záznamu Full text from SpringerLink