naa a22 4500 510822894 CHVBK 20180411083542.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s12541-013-0287-4 doi (NATIONALLICENCE)springer-10.1007/s12541-013-0287-4 Bent tube design used in a high temperature heat exchanger using a FE analysis and RSM [Elektronische Daten] [Ho-Seung Jeong, Jong-Rae Cho] High temperature heat exchanger technology is important with respect to improving the performance of power and propulsion system. This study proposes and optimizes a new heat exchanger tube shape by reducing the size of the tube bundle and improving structural characteristics such as the thermal stress and resonance. Various tube shapes were proposed and a FE analysis was performed to select the tube with the best structural characteristics. The response surface methodology was employed to establish mathematical approximation models using the results of design of experiments as a function of the geometric parameters of the selected tube. Also, the main effects of various geometric parameters on the selected tube were investigated. The geometric parameters such as offset length, the straight distance between one end and the other end of the tube, the tube length in a straight portion and fillet radius were assessed. The geometric parameters of the selected tube were optimized using the RSM and multi-objective genetic algorithm. We suggested the calculated coefficients of the regression equation for the objective function, optimized data, and an optimization procedure of the tube. The presented findings could be used in the preliminary design of the heat exchanger used in high temperature. Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg, 2013 Heat exchanger nationallicence Tube nationallicence Thermal stress nationallicence Response surface methodology nationallicence Design of experiments nationallicence Finite element analysis nationallicence DO : Initial outer diameter of tube nationallicence to : Initial wall thickness of tube nationallicence σ max : Maximum von-Mises stress nationallicence K : Kelvin, SI unit of temperature nationallicence Jeong Ho-Seung Rolls-Royce and Pusan National University Technology Centre in Thermal Management, San 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, South Korea aut Cho Jong-Rae Department of Mechanical & Energy System Engineering, Korea Maritime and Ocean University, 1, Dongsan-dong, Youngdo-gu, 606-791, Busan, South Korea aut International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/12(2013-12-01), 2119-2125 2234-7593 14:12<2119 2013 14 12541 https://doi.org/10.1007/s12541-013-0287-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12541-013-0287-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jeong Ho-Seung Rolls-Royce and Pusan National University Technology Centre in Thermal Management, San 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, South Korea aut NATIONALLICENCE 700 1- Cho Jong-Rae Department of Mechanical & Energy System Engineering, Korea Maritime and Ocean University, 1, Dongsan-dong, Youngdo-gu, 606-791, Busan, South Korea aut NATIONALLICENCE 773 0- International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/12(2013-12-01), 2119-2125 2234-7593 14:12<2119 2013 14 12541 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer