### Abstract

Original language | English |
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Number of pages | 2 |

Publication status | Published - 7 Nov 2019 |

Event | Sixteenth International Conference on Flow Dynamics - Tohoku University , Sendai, Japan Duration: 6 Nov 2019 → 8 Nov 2019 Conference number: 16th http://www.ifs.tohoku.ac.jp/ |

### Conference

Conference | Sixteenth International Conference on Flow Dynamics |
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Abbreviated title | ICFD-2019 |

Country | Japan |

City | Sendai |

Period | 6/11/19 → 8/11/19 |

Internet address |

### Fingerprint

### Keywords

- rapid-distortion theory
- low speed jets
- turbulence

### Cite this

*Improved predictions of trailing-edge noise using rapid-distortion theory and CFD data*. Sixteenth International Conference on Flow Dynamics, Sendai, Japan.

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**Improved predictions of trailing-edge noise using rapid-distortion theory and CFD data.** / Afsar, Mohammed.

Research output: Contribution to conference › Other

TY - CONF

T1 - Improved predictions of trailing-edge noise using rapid-distortion theory and CFD data

AU - Afsar, Mohammed

PY - 2019/11/7

Y1 - 2019/11/7

N2 - 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.

AB - 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.

KW - rapid-distortion theory

KW - low speed jets

KW - turbulence

UR - http://www.ifs.tohoku.ac.jp/icfd2019/

M3 - Other

ER -