Najm Abdullah, Mohammed. “Heat Transfer and Pressure Drop in Turbulent Flow through an Eccentric Converging-Diverging Tube With Twisted Tape Inserts”. Journal of Engineering and Sustainable Development 16, no. 2 (June 1, 2012): 178–192. Accessed June 3, 2026. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1209.