Safaa A. Saleh, Zena K. Kadhim, and Kamil Abdulhusein Khalaf, “CFD simulation of helical coil heat exchanger with Different coil pitch to heating heavy fuel oil”, WJES, vol. 11, no. 3, pp. 120–139, Dec. 2023, doi: 10.31185/ejuow.Vol11.Iss3.472.