Finite element analysis of mixed convection over in-line tube bundles

Heat transfer and fluid flow over in-line bundles of cylinders have been numerically simulated. Flow is assurned as incompressible, two-dimensional and laminar. Analysis has been carried out for Reynolds numbers of 50, 100, 150 and pitch to diameter ratios (PDR) of 1.5 and 2.0 with a Prandtl number...

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Bibliographic Details
Published in:International journal of heat and mass transfer 1998-06, Vol.41 (11), p.1613-1619
Main Authors: Krishne Gowda, Y.T., Aswatha Narayana, P.A., Seetharamu, K.N.
Format: Article
Language:English
Subjects:
Buoyancy
Convection and heat transfer
Cylinders (shapes)
Exact sciences and technology
Finite element method
Fluid dynamics
Friction
Fundamental areas of phenomenology (including applications)
Incompressible flow
Laminar flow
Nusselt number
Physics
Prandtl number
Pressure distribution
Tubes (components)
Turbulent flows, convection, and heat transfer
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Summary:Heat transfer and fluid flow over in-line bundles of cylinders have been numerically simulated. Flow is assurned as incompressible, two-dimensional and laminar. Analysis has been carried out for Reynolds numbers of 50, 100, 150 and pitch to diameter ratios (PDR) of 1.5 and 2.0 with a Prandtl number of 0.71. The effect of Richardson number ( Ri = Gr/Re 2) on the flow and heat transfer has been investigated for Ri = −1.0, −0.5, 0.0, + 0.5 and + 1.0. Streamlines, temperature contours, average Nusselt numbers, average friction coefficients and pressure distribution around the cylinders are presented. It is observed that there is a considerable effect of buoyancy over tube bundles.
ISSN:0017-9310
1879-2189
DOI:10.1016/S0017-9310(97)00244-5