Forced and Free Flow in a Vertical Annular Duct Under Nonaxisymmetric Conditions

Author:

Barletta A.1,Lazzari S.1

Affiliation:

1. Universita` di Bologna, Dipartimento di Ingegneria Energetica, Nucleare e del Controllo Ambientale (DIENCA), Laboratorio di Montecuccolino, Via dei Colli, 16, I-40136 Bologna, Italy

Abstract

The combined forced and free flow in a vertical annular duct is studied under the hypothesis of steady-state parallel laminar flow. The Boussinesq approximation is invoked and the viscous dissipation is considered as negligible. The thermal boundary conditions are such that axial symmetry does not occur and temperature does not change in the axial direction. The dimensionless local balance equations are solved analytically by means of the Fourier series expansion method. The analytical expressions of the dimensionless temperature field, of the dimensionless velocity field, and of the Fanning friction factor are obtained.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Numerical Investigation of Shell and Tube Heat Exchanger with Twist Annular;IOP Conference Series: Materials Science and Engineering;2018-12-17

2. Heat transfer—A review of 2005 literature;International Journal of Heat and Mass Transfer;2010-10

3. Forced convection to laminar flow of liquid egg yolk in circular and annular ducts;Brazilian Journal of Chemical Engineering;2009-06

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