팬이 장착된 진공청소기 흡입 노즐내 유로 유동 소음해석

Numerical Analysis of Flow-Induced Noise in Suction Nozzle of a Vacuum Cleaner with a Rotary Fan

Flow resistance induced by each element in suction nozzle of a vacuum cleaner with a rotary fan is investigated numerically and its relation with flow-induced noise is examined. Flow resistance and vorticity in suction nozzle are calculated and it is found that they are closely related with flow-induced noise. From numerical results, it is suggested that reduction of flow resistance effectively increases all-suction performance and decreases sound pressure level of noise generated in the suction nozzle.