Design optimization of a centrifugal fans and enhance efficiency and effectiveness of its service life (Case study of type Backward Centrifugal Fan). مجلة العلوم الهندسية [Internet]. 2024 Mar. 19 [cited 2026 Jun. 18];40(1). Available from: https://journal.damascusuniversity.edu.sy/index.php/engj/article/view/5068