Numerical study of fluid flow and heat transfer over a series of in-line noncircular tubes confined in a parallel-plate channel

摘要

Two-dimensional steady developing fluid flow and heat transfer across five in-line tubes confined in a channel were studied numerically for a fluid with a Prandlt number of 0.7. The tube cross-sectional shapes studied were circular, flat, oval, and diamond. Domain disrectization was carried out in body-fitted coordinate system. The contravariant components of velocities were used as the dependent variables. The governing equations were solved using a finite-volume technique. Grid independence study was carried out by running the developed code for several different grid sizes for each of the four geometric configurations and monitoring module average Nusselt number and normalized pressure drop.