Review of Turbulent Boundary Layer Models for Acoustic Analysis

Sound transmission through double cylindrical shells lined with porous material under turbulent boundary layer excitation

“…It is suitable for a wide range of Mach number in the range 0.41-2.1 [23]. Besides the two models mentioned above, several other models have been proposed (as reviewed by Miller [46], Graham [47] and Hwang [48]). The purpose of this study is not to select the best model of the turbulent boundary layer, but to establish a better understanding of the sound transmission through the sandwich shells in the presence of the turbulent boundary layer excitation.…”

Vibroacoustic Tailoring of a Rod-Stiffened Composite Fuselage Panel with Multidisciplinary Considerations

“…The low streamwise wave-number excitations exhibited by Eqs. (11) and (12) vary considerably and were thought to be representative of the variations seen in TBL CPSD formulations found in the literature [13]. It was of interest to consider the extent that differences in the low-wavenumber excitation might influence the outcome in this and similar multi-objective design studies.…”

“…(13) and (14) are attributed to the Strouhal number Sh = coS/UT; the TBL convective velocity was assumed to be 70% of the freestream velocity, written as Uc = 0nU x \ and the flight condition was specified with a freestream velocity of Mach 0.85, and so the expression in Eq. (14) was interpolated accordingly.…”

“…Miller et al have recently given a review of TBL models relevant for fuselage vibroacoustic analysis [13]. Significant variations in the modeled fluctuating pressure field were noted, especially in the low-wave number region, where coupling with the fuselage dynamics is typically most active.…”

Numerical Simulation of Wall-Pressure Fluctuations Due to a Turbulent Boundary Layer

“…Noise generated by airflow over an airplane's surface is important for all classes of airplanes. For small airplanes, boundary-layer noise is only important at high frequencies, while high-speed flows in larger airplanes generate significant levels of turbulent boundary-layer noise, which is the most important source of cabin noise during cruise [5].…”