In the paper, the results of numerical simulations of the steam flow in a shell and tube heat exchanger are presented. The efficiency of different models of turbulence was tested. In numerical calculations the following turbulence models were used: k-ε, RNG k-ε, Wilcox k-ω, Chen-Kim k-ε, and Lam-Bremhorst k-ε. Numerical analysis of the steam flow was carried out assuming that the flow at the inlet section of the heat exchanger were divided into three parts. The angle of steam flow at inlet section was determined individually in order to obtain the best configuration of entry vanes and hence improve the heat exchanger construction. Results of numerical studies were verified experimentally for a real heat exchanger. The modification of the inlet flow direction according to theoretical considerations causes the increase of thermal power of a heat exchanger of about 14%.

JO - Archives of Thermodynamics L1 - http://rhis.czasopisma.pan.pl/Content/105676/PDF/06_paper.pdf L2 - http://rhis.czasopisma.pan.pl/Content/105676 IS - No 2 EP - 120 KW - heat transfer KW - heat exchanger KW - shell and tube heat exchanger ER - A1 - Bartoszewicz, JarosÅ‚aw A1 - BogusÅ‚awski, Leon PB - The Committee on Thermodynamics and Combustion of the Polish Academy of Sciences JF - Archives of Thermodynamics SP - 107 T1 - Numerical analysis of the steam flow field in shell and tube heat exchanger UR - http://rhis.czasopisma.pan.pl/dlibra/docmetadata?id=105676 DOI - 10.1515/aoter-2016-0015