Development of a Metasilencer Considering Flow in HVAC Systems

Although the driving noise of electric vehicles has been reduced compared with that internal combustion engine vehicles, a new interior problem is emerging. It crucial to reduce heating, ventilation, and air conditioning (HVAC) system, which one main causes noise. Therefore, in this study, metasilencer an acoustic metasurface structure presented. The was designed restrain travel direction sound wave target frequency into U-shaped configuration using while considering flow effect HVAC system. Acoustic analysis confirmed reduction range refraction metasurface. speaker test silencer. same also via tests, even presence flow.