Abstract
Heat transfer was studied on a separate transverse row of tubes with the relative pitch ofs 1/d=1.5 and a staggered bundle with the relative pitches ofs 1/d×s 2/d=1.15×0.98. A test tube in the transverse row was used with a variable displacement from the symmetric position. The tube bundle was placed at different gaps from the shell wall. Experiments were performed in air and water in the range ofRe from 103 to 6×105. Asymmetric flows over transverse rows are accompanied by augmented heat transfer rates and steady state lift force which becomes higher with the amount of displacement. The presence of the shell wall introduces alterations in the thermal and fluid dynamics over outside tubes in a bundle.
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