“Design Optimization of a Centrifugal Fans and Enhance Efficiency and Effectiveness of Its Service Life (Case Study of Type Backward Centrifugal Fan)”. Damascus University Journal for engineering sciences 40, no. 1 (March 19, 2024). Accessed June 18, 2026. https://journal.damascusuniversity.edu.sy/index.php/engj/article/view/5068.