Akademik Veri Yönetim Sistemi
Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, Makina Mühendisliği Bölümü, Türkiye
Tezin Onay Tarihi: 2014
Tezin Dili: İngilizce
Öğrenci: Ahmet Bodur
Danışman: MEHMET ÇALIŞKAN
Özet:In this study, the noise characteristic of a tube axial fan is investigated numerically and experimentally. The effects of blockage plate in front of the tube axial fan on the tube axial fan noise level are experimentally investigated. A computational aero-acoustic method is used to predict the flow induced fan noise. This method couples a flow solver and a wave equation solver. Unsteady flow analysis is performed with URANS (Unsteady Reynolds Average Navier Stokes Equation) method while acoustics radiation is computed with Ffowcs-Williams & Hawkings acoustics model in FLUENT. The numerical results is verified by a reasonably good agreement between numerical sound pressure level (SPL) of the tube axial fan in free-field and sound pressure level provided by acoustical measurement of the tube axial fan. The numerical and experimental studies give information about characteristics of the tube axial fan noise and about the effects of the blockage plate on fan noise level.