Chingtuaythong, W. and Chokphoemphun, S. (2018) “Thermal performance augmentation in heat exchanger tube with oval–pentagon rings”, Journal of Research and Applications in Mechanical Engineering, 6(1), pp. 50–62. available at: https://ph01.tci-thaijo.org/index.php/jrame/article/view/136552 (accessed: 9 April 2025).