2016
DOI: 10.1121/1.4960516
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Simulation of the pressure field beneath a turbulent boundary layer using realizations of uncorrelated wall plane waves

Abstract: This paper investigates the modelling of a vibrating structure excited by a turbulent boundary 15 layer (TBL). Although the wall pressure field (WPF) of the TBL constitute a random excitation, the element-based methods generally used for describing complex mechanical structures consider deterministic loads. The response of the structure to a random excitation like TBL is generally deduced from calculations of numerous Frequency Response Functions. The result is that the process requires costly computational re… Show more

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Cited by 40 publications
(33 citation statements)
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“…Figure 18 shows the Graham's parameter in the wavenumber domain. Hence, the criteria defined in Equation (23) can be updated as follows: Equation (29) implies that, for a given k x , k y is varying between upper and lower bounds governed by two lines as depicted in Figure 18. 46 Although a finite-span plate is considered in this work, the contribution of the subcritical gusts to the far-field scattered pressure is negligible as the Hann window has been applied to the incident pressure at the two sides of the contraction outlet, which forces the pressure gust magnitudes to zero at the plate spanwise ends.…”
Section: Criteria For the Mesh Sizementioning
confidence: 99%
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“…Figure 18 shows the Graham's parameter in the wavenumber domain. Hence, the criteria defined in Equation (23) can be updated as follows: Equation (29) implies that, for a given k x , k y is varying between upper and lower bounds governed by two lines as depicted in Figure 18. 46 Although a finite-span plate is considered in this work, the contribution of the subcritical gusts to the far-field scattered pressure is negligible as the Hann window has been applied to the incident pressure at the two sides of the contraction outlet, which forces the pressure gust magnitudes to zero at the plate spanwise ends.…”
Section: Criteria For the Mesh Sizementioning
confidence: 99%
“…The two lines with the slope of ± M∕Λ are supercritical gusts and are expected to dominate the scattered pressure. This is due to the fact that, using the criteria in Equation (29), only a small part of the wavenumber space domain was considered to numerically evaluate the Fourier integral in Equation (4), as shown in Figure 18. This is due to neglecting larger wavenumbers in the spanwise direction, which have shorter wavelength.…”
Section: Criteria For the Mesh Sizementioning
confidence: 99%
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