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

✍ Scribed by Y.T. Krishne Gowda; P.A. Aswatha Narayana; K.N. Seetharamu

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 617 KB
• Volume: 41
• Category: Article
• ISSN: 0017-9310
• DOI: 10.1016/s0017-9310(97)00244-5

✦ Synopsis

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 mnnbers 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 = Cr/Rc?) on the flow and heat transfer has been investigated

for Ri = -1.0, -0.5, 0.0, +0.5 and + 1 .O. 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.