Abstract No.F181016-271
Author name(s): Seung-Jin JEONG1, Suk-Yoon HONG1, Min-Hyuk KIM1, Jee-Hun SONG2, Hyun-Wung KWON3, Hee-Min NOH4
Company: 1. Seoul National University, Korea; 2. Chonnam National University, Korea; 3. Koje College, Korea; 4. Korea Railroad Research Institute, Korea
Recently, indoor noise of vehicles such as vessels becomes a major problem when driving. There are many causes of the noise at the vehicle in motion, but noise from external flow is shown to be the primary. As a solution to this noise problem, perforated panels that have been used in many noise problems before have emerged. Although perforation panels are known to be effective in reducing noise, most of study does not take into account the effects of flow. In this paper, a procedure for analyzing the sound absorption performance of perforated panel considering the effects of flow is established, and applied the procedure to actual model.
KEY WORDS: perforated panel; computational fluid dynamics; acoustic analogy; FW-H method; boundary element method; two microphone method; acoustic absorption performance
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