Viscous dissipation in plastic pipe extrusion. Issue 10 (8th March 2013)

• Record Type: Journal Article
• Authors: Kolitawong, Chanyut; Giacomin, A. Jeffrey; Nontakaew, Udomkiat
• Is Part Of: Polymer engineering & science. Volume 53:Issue 10(2013:Oct.)
• Page Start: 2205
• Page End: 2218
• Publication Date: 2013-03-08
• Subjects: Polymer engineering -- Periodicals; Polymers -- Periodicals; 668.9
• DOI: 10.1002/pen.23464
• Languages: English
• ISSNs: 0032-3888

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>We study the temperature distribution of a power‐law fluid in a pressure‐driven axial flow between eccentric cylinders in bipolar cylindrical coordinates. We begin our analysis by writing the equation of energy in bipolar cylindrical coordinates. We then obtain a dimensionless algebraic analytic solution for temperature profiles under a steady, laminar, incompressible, and fully developed flow for an adiabatic core and an isothermal outer cylinder (<italic>Eq</italic>. <xref ref-type="link" rid="pen23464-disp-0059">59</xref>). We find that the dimensionless temperature profile depends upon the radius ratio of the inner to outer cylinders, the eccentricity, the angular position, and the power‐law exponent <italic>n</italic>. The temperature is a strong function of the gap between the cylinders. Finally, dimensionless maximum temperatures are plotted to help pipe manufacturing engineers prevent excessive heating during production. POLYM. ENG. SCI., 53:2205–2218, 2013. © 2013 Society of Plastics Engineers</p> </abstract>