Numerical Study of Convective Heat Transfer from Tube Banks with Staggered Arrangements in Crossflows

Abstract

The purpose of this 2-dimensional numerical research of tubes in crossflows in staggered formation is to evaluate the thermal and flow characteristics of crossflow tubular heat exchangers in staggered formation. Prediction of heat transfer and flow around tube banks is critical in many engineering applications. Six tubes with equilateral triangle layouts were built up, with pitch distance-to-diameter ratios ranging from 1.2 to 2.0. Reynolds numbers ranging from 1000 to 100,000 are utilized. The coefficient of performance (COP) of the settings was determined in this study. At pitch distance-to-diameter of 1.8 and 2.0, the Reynolds number of 5000 has the maximum value of the coefficient of performance. Pitch distance to diameter 1.2 at Reynolds number 100 000 receives the highest average of Nusselt number value. Then, the Average heat flux at 1.2 pitch distance to diameter has the highest Average heat flux. Lastly, Normal Root Mean Square Error (NRSME) has the lowest value at 1.2 pitch distance to diameter, compared with other pitch distance to diameter.