Improved predictions of trailing-edge noise using rapid-distortion theory and CFD data

Afsar, Mohammed (2019) Improved predictions of trailing-edge noise using rapid-distortion theory and CFD data. In: Sixteenth International Conference on Flow Dynamics, 2019-11-06 - 2019-11-08, Tohoku University.

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    Abstract

    We show the effect of correcting the acoustic spectrum formula for a high speed jet interacting with a trailing edge of a semi-infinite flat plate derived by Goldstein et al., (2017, J Fluid Mech. vol. 824, p. 477) using the Rapid-distortion theory (RDT). The correction involves using the next order term for the amplitude function in the WKBJ approximation for the scattered pressure. The high frequency roll-off of the acoustic spectrum predictions that we obtain using this correction are closer to experiment for low speed jets. In the talk we will discuss the role of using CFD data in the model.

    Creators(s): Afsar, Mohammed ORCID logoORCID: https://orcid.org/0000-0002-7417-2089;
    Item type:Conference or Workshop Item(Other)
    ID code:70725
    Keywords:rapid-distortion theory, low speed jets, turbulence, Motor vehicles. Aeronautics. Astronautics, Aerospace Engineering
    Subjects:Technology > Motor vehicles. Aeronautics. Astronautics
    Department:Faculty of Engineering > Mechanical and Aerospace Engineering
    Strategic Research Themes > Ocean, Air and Space
    Depositing user: Pure Administrator
    Date deposited:06 Dec 2019 13:54
    Last modified:11 Feb 2021 11:08
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/70725
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