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Numerical investigation of the deflector effect on the aerodynamic and acoustic characteristics of turbulent cavity flow

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Abstract

The effect of a deflector on the aerodynamic and acoustic characteristics of turbulent flow in a cavity is numerically modeled. The computation method working on unstructured grids is described. The immersed boundary method is applied to model the deflector. The adequacy of the computation method is checked against some similar problems for which there are plausible experimental data. The results of the calculations of turbulent flow around deflectors of different shape are presented and their influence on the flow structure is analyzed. The results of the large-scale calculations of flow near a cavity are also considered in the presence and the absence of a deflector near the leading edge. On the basis of the numerical data obtained the deflector effect on the aerodynamic and acoustic characteristics of cavity flow is analyzed, including the effect on the acoustical loads on the cavity surface.

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Authors and Affiliations

  1. Keldysh Institute of Applied Mathematics, Miusskaya pl. 4, Moscow, 125047, Russia

    A. P. Duben’, N. S. Zhdanova & T. K. Kozubskaya

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  1. A. P. Duben’
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  2. N. S. Zhdanova
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  3. T. K. Kozubskaya
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Correspondence to A. P. Duben’.

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Original Russian Text© A.P. Duben’, N.S. Zhdanova, T.K. Kozubskaya, 2017, published in Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, 2017, No. 4, pp. 113–124.

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Duben’, A.P., Zhdanova, N.S. & Kozubskaya, T.K. Numerical investigation of the deflector effect on the aerodynamic and acoustic characteristics of turbulent cavity flow. Fluid Dyn 52, 561–571 (2017). https://doi.org/10.1134/S001546281704010X

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