Sakr, I.M., W.A. El-Askary, A. Balabel, and K. Ibrahim. “Computations of Upward Water/Air Fluid Flow in Vertical Pipes”. CFD Letters 4, no. 4 (January 18, 2021): 193–213. Accessed July 3, 2024. https://akademiabaru.com/submit/index.php/cfdl/article/view/3359.