NDLI: Numerical Modeling of Buoyancy-Induced Fluid Flow and Heat Transfer in a Staggered Tube Bank

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ivanov, N. G. Kirillov, A. I. Smirnov, E. M. Ris, V. V.
Copyright Year	2010
Abstract	Heat exchangers involving plain tubes in crossflow are widely employed in various industrial applications. Detailed studies have established relations between the heat transfer coefficient and the arrangement of tubes within the tube bank. Most of the data available in the literature concern with the tube bank heat transfer under forced convection conditions at relatively high Reynolds numbers, exceeding 103. However, the buoyancy effects become significant or even dominant under low-flow-rate conditions. Today reliable data for low-Reynolds-number regimes could be obtained using advanced Computational Fluid Dynamics techniques. The current contribution deals with a buoyancy-induced flow through a staggered tube bundle. Two-dimensional unsteady convection in a tube bank of 24 rows is computed. The tube walls are assumed to be at a uniform temperature. The buoyancy effects are described with the Boussinesq’s approximation. The computations have been performed for the Prandtl number of 6.09 and the Reynolds numbers in the range of 102-103. Development of unsteady flow and temperature fields along the flow path as well as variations of the heat transfer coefficients from tube to tube are analyzed. As a general result of the present parametric computations, the effects of the transverse and longitudinal pitches on the heat removal rate have been investigated.
Sponsorship	Heat Transfer Division
Starting Page	545
Ending Page	551
Page Count	7
File Format	PDF
ISBN	9780791849392
DOI	10.1115/IHTC14-22640
e-ISBN	9780791838792
Volume Number	2010 14th International Heat Transfer Conference, Volume 4
Conference Proceedings	2010 14th International Heat Transfer Conference
Language	English
Publisher Date	2010-08-08
Publisher Place	Washington, DC, USA
Access Restriction	Subscribed
Subject Keyword	Temperature Forced convection Approximation Computer simulation Fluid dynamics Computational fluid dynamics Reynolds number Buoyancy Heat exchangers Unsteady flow Flow (dynamics) Convection Heat Prandtl number Computation Heat transfer coefficients Heat transfer
Content Type	Text
Resource Type	Article

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