• 제목/요약/키워드: Aeolian 순음소음

검색결과 2건 처리시간 0.014초

격자 볼츠만 방법을 이용한 덕트 내 쌍둥이 직렬배열 사각 실린더에 의한 Aeolian 순음소음 고찰 (Investigation Into Aeolian Tone Noise by Twin Tandem Square Cylinders in duct Using Lattice Boltzmann Method)

  • 이송준;정철웅
    • 한국소음진동공학회논문집
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    • 제24권12호
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    • pp.962-968
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    • 2014
  • The lattice Boltzmann method(LBM) has attracted attention as an alternative numerical algorithm for solving fluid mechanics since the end of the 90's. In these days, its intrinsic unsteadiness and rapid increase in computing power make the LBM be more applicable for computing flow-induced noise as well as fluid dynamics. The lattice Boltzmann method is a weakly compressible scheme, so we can get information about both aerodynamics and aeroacoustics from single simulation. In this paper, numerical analysis on Aeolian tone noise generated by tandem-twin square cylinders in duct is performed using the LBM. For simplicity, laminar two-dimensional fluid models are used. To verify the validity and accuracy of the current numerical techniques, numerical results for the laminar duct and the cylinder flows are compared with the analytical solution and the measurement, respectively. Then, aerodynamic noise of the twin tandem square cylinders is investigated. It is shown that the aerodynamic noise from the twin tandem square cylinders can be reduced by controlling the distance between the cylinders.