Entropy analysis for third grade fluid flow with Vogel model viscosity in annular pipe

Autor:	Hüseyin Bayrakçeken, Muhammet Yürüsoy, Fatih Aksoy, Mehmet Kapucu
Rok vydání:	2008
Předmět:	Materials science Applied Mathematics Mechanical Engineering Thermodynamics Herschel–Bulkley fluid Mechanics Apparent viscosity Friction loss Non-Newtonian fluid Physics::Fluid Dynamics Temperature dependence of liquid viscosity Mechanics of Materials Inviscid flow Heat transfer Fluid dynamics
Zdroj:	International Journal of Non-Linear Mechanics. 43:588-599
ISSN:	0020-7462
Popis:	The steady-state flow of a third grade fluid between concentric circular cylinders is considered and entropy generation due to fluid friction and heat transfer in the annular pipe is examined. Depending upon the fluid viscosity, entropy generation in the flow system varies. The third grade fluid is employed to account for the non-Newtonian effect while Vogel model is accommodated for temperature-dependent viscosity. The analysis is based on perturbation technique. The closed form solutions for velocity, temperature and entropy fields are presented. Entropy generation due to fluid friction and heat transfer in the flow system is formulated. The influence of viscosity parameters A and B on the entropy generation number is investigated. It is found that entropy generation number reduces with increasing viscosity parameter A , which is more pronounced in the region close to the annular pipe inner wall and opposite is true for increasing viscosity parameter B .
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6cad018c4836b3a9be4bf45bd1912bdc https://doi.org/10.1016/j.ijnonlinmec.2008.02.005 Zobrazit plný text záznamu Full Text from ScienceDirect