TY - JOUR
T1 - Assessment of immersed boundary method as a tool for direct numerical simulation of aeroacoustic sound
AU - Nishikawa, Kosei
AU - Konno, Kodai
AU - Hattori, Yuji
N1 - Funding Information:
This work was supported by Kawai Foundation for Sound Technology & Music. Numerical calculations were performed on the UV1000 and UV2000 at the Institute of Fluid Science, Tohoku University.
Publisher Copyright:
© 2020 The Japan Society of Mechanical Engineers.
PY - 2020
Y1 - 2020
N2 - An immersed boundary method of discrete type is tested as a tool for direct numerical simulation of aeroacoustic sound. The numerical method consists of the WENO scheme, the immersed boundary method by Chaudhuri et al. (J. Comp. Phys. Vol. 230, 1731-1748 (2011), and the perfectly matched layer together with the dyadic mesh refinement and the Runge-Kutta method. The accuracy of the method is shown to be sufficient for four basic problems: propagation of acoustic waves, aeroacoustic sound generation in a flow past a fixed circular cylinder, in a flow past an oscillating square cylinder, and from a vortex pair passing through a circular cylinder. The results confirm that the developed method can deal with moving bodies and it is accurate not only for viscous flows but also for inviscid flows.
AB - An immersed boundary method of discrete type is tested as a tool for direct numerical simulation of aeroacoustic sound. The numerical method consists of the WENO scheme, the immersed boundary method by Chaudhuri et al. (J. Comp. Phys. Vol. 230, 1731-1748 (2011), and the perfectly matched layer together with the dyadic mesh refinement and the Runge-Kutta method. The accuracy of the method is shown to be sufficient for four basic problems: propagation of acoustic waves, aeroacoustic sound generation in a flow past a fixed circular cylinder, in a flow past an oscillating square cylinder, and from a vortex pair passing through a circular cylinder. The results confirm that the developed method can deal with moving bodies and it is accurate not only for viscous flows but also for inviscid flows.
KW - Aeroacoustic sound
KW - Direct numerical simulation
KW - Immersed boundary method
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U2 - 10.1299/jfst.2020jfst0004
DO - 10.1299/jfst.2020jfst0004
M3 - Article
AN - SCOPUS:85078855056
VL - 15
JO - Journal of Fluid Science and Technology
JF - Journal of Fluid Science and Technology
SN - 1880-5558
IS - 1
M1 - 19-00426
ER -