Heat Transfer and Fluid Flow Characteristics Studyudfor In-Line Tube Bank in Cross-Flow

摘要

This research investigates the heat transferudcoefficient as a function of tube position and pressureuddrop, for in-line tube bank in cross-flow. Experimentationudwas essentially used to generate log-mean temperatureudcurves and pressure heads upstream and down stream ofudthe test section. The heat transfer and flow parametersudsuch as Nusselt number, Reynolds number, and pressureuddrop across the bank were calculated. In addition, heatudtransfer correlations, Nusselt number (Nu) were obtainedudby power-law curve fitting for each position of the tube inudthe tube bank. FEMLAB 3.0 was use for numericaludsimulation and the results obtained compared favourablyudwith that of the experimental results. Numerical resultsudalso reveal the important aspects of the local heat transferudand flow features within the tube bank. Theseudcharacteristics include boundary layer developmentsudbetween tubes, formation of vortices, local variations of theudvelocity and temperature distribution.