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Empirical Model of Wall Pressure Spectra in Adverse Pressure Gradients

Hu, Nan (2018) Empirical Model of Wall Pressure Spectra in Adverse Pressure Gradients. AIAA Journal, 56 (9), pp. 3491-3506. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.J056666. ISSN 0001-1452.

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Official URL: https://doi.org/10.2514/1.J056666


An empirical model of wall pressure spectra for adverse pressure gradient boundary layers is proposed. The effect of adverse pressure gradients on wall pressure spectra and the relationship between the boundary-layer parameters and the wall pressure are studied and demonstrated. A dataset for five experiments at four different test facilities, covering Reynolds number between 2.6 ⋅ 103 and 1.9 ⋅ 104 based on the boundary-layer momentum thickness, is selected to develop the new model. Goody’s model is served as the basis for the development. Predictions of the new model and comparisons with other published wall pressure spectral models for adverse pressure gradient boundary layers are made for the selected dataset. The new model shows good prediction accuracy for the selected dataset and a significant improvement compared to the other published models.

Item URL in elib:https://elib.dlr.de/121101/
Document Type:Article
Title:Empirical Model of Wall Pressure Spectra in Adverse Pressure Gradients
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:29 June 2018
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 3491-3506
EditorsEmailEditor's ORCID iDORCID Put Code
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Keywords:Empirical model, wall pressure fluctuations, adverse pressure gradient
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin (old)
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Hu, Nan
Deposited On:13 Dec 2018 10:31
Last Modified:30 Oct 2023 14:33

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