© Numerical Study Of Fluid Flow And Heat Transfer Over A Series Of In-Line Noncircular Tubes Confined In A Parallel-Plate Channel Bahaidarah, HMS; Ijaz, M; Anand, NK TAYLOR FRANCIS INC, NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS; pp: ; Vol: 50 King Fahd University of Petroleum & Minerals Summary 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. The results for flat, oval, and diamond tubes were compared with each other and with those for circular tubes. Flat and oval tubes offered greater flow resistance and heat transfer rate when compared to circular tubes for all values of Reynolds number (Re) considered in this study. Diamond tubes offered less resistance to flow compared to circular tubes for Re <= 250. For all values of Re, diamond tubes exhibited the lowest heat transfer rate. When both the flow resistance and heat transfer rate were considered, diamond tubes were better than flat and oval tubes for Re 50, flat and oval tubes performed better. Both geometry and flow field were major factors affecting the heat transfer performance for Re > 50, whereas geometric shape was found to affect performance Copyright: King Fahd University of Petroleum & Minerals;

© for Re > 50 more significantly. References: BAHAIDARAH HM, 2004, THESIS TEXAS A M U C BAHAIDARAH HMS, 2005, NUMER HEAT TR A-APPL, V48, P359, DOI / BREUER M, 2000, INT J HEAT FLUID FL, V21, P186 CHEN Y, 1998, NUMER HEAT TR A-APPL, V33, P371 CHEN Y, 1998, NUMER HEAT TR A-APPL, V33, P387 DHAUBHADEL MN, 1986, INT J NONLINEAR MECH, V21, P361 ELSHABOURY AMF, 2005, NUMER HEAT TR A-APPL, V48, P99, DOI / FUJII M, 1984, NUMER HEAT TRANSFER, V7, P89 GRANNIS VB, 1991, NUMER HEAT TR A-APPL, V19, P381 INCROPERA FP, 1996, FUNDAMENTALS HEAT MA KARKI K, 1986, THESIS U MINNESOTA M KUNDU D, 1989, THESIS U TEXAS ARLIN KUNDU D, 1991, NUMER HEAT TR A-APPL, V19, P345 KUNDU D, 1991, NUMER HEAT TR A-APPL, V19, P361 NAPOLITANO M, 1985, INT J NUMER METH FL, V5, P667 OTA T, 1984, INT J HEAT MASS TRAN, V27, P1771 OTA T, 1986, J HEAT TRANSFER, V108, P525 WEBB RL, 1993, PRINCIPLES ENHANCED WILLIAMSON CHK, 1996, ANNU REV FLUID MECH, V28, P477 WUNG T, 1986, HEAT TRANSFER 1986, P1041 ZDRAKOVICH MM, 1997, FLOW CIRCULAR CYLIND, V1 For pre-prints please write to: Copyright: King Fahd University of Petroleum & Minerals;