Ghiasi, P. ., A. . Salehi, S. S. . Hoseini, G. . Najafi, R. . Mamat, B. Balkhaya, and F. . Khoerunnisa. “Investigation of the Effect of Flow Rate on Fluid Heat Transfer in Counter-Flow Helical Heat Exchanger Using CFD Method”. CFD Letters, vol. 12, no. 3, Jan. 2021, pp. 98-111, https://www.akademiabaru.com/submit/index.php/cfdl/article/view/3229.