Zainel Mohsin, Zakariya, and Zeyad Ayoob Sulaiman. 2023. “Application of the Method of Characteristics With Unsteady Friction Model for Numerical Modeling of Transient Flow Induced by Valve Closure”. Al-Rafidain Engineering Journal (AREJ) 28 (2):209-25. https://doi.org/10.33899/rengj.2023.140924.1262.