The aim of this study is to evaluate the influence of design parameters on the unsteady flow in a forward-curved centrifugal fan and their impact on the aeroacoustic behavior. To do so. numerical and experimental studies have been carried out on four centrifugal impellers designed with various geometrical parameters. The same volute casing has been used to study these impellers. https://safeersappliancers.shop/product-category/hoover-hmn7182xk-1-70cm-frost-free-american-fridge-freezer-stainless-steel/