Prediction of fluctuating pressure in attached and separated turbulent boundary layer flow

Response of skin panels to combined self- and boundary layer-induced fluctuating pressure

“…) Laganelli et al (Laganelli and Wolfe, 1993;Laganelli and Howe, 1977;Blevins et al, 2009) extended an empirical relation for incompressible attached TBL flow to compressible flow using a transformation function. Laganelli et al (Laganelli and Wolfe, 1993;Laganelli and Howe, 1977;Blevins et al, 2009) compared the semi-empirical model against experimental data for Mach numbers between 2 and 5, and found it to be in good agreement.…”

“…), and the spatial component of phase angle, ψ, are developed from previous work by Laganelli et al (Laganelli and Wolfe, 1993;Laganelli and Howe, 1977;Blevins et al, 2009) and Coe and Chyu (1972), respectively. Note that these semi-empirical models are based on time-averaged analysis of the turbulence (Laganelli and Wolfe, 1993;Laganelli and Howe, 1977;Blevins et al, 2009;Coe and Chyu, 1972).…”

“…This model includes coupled self-induced pressure and aerodynamic heating, computed 2-D temperature distributions, temperature dependent material properties, and moderate structural nonlinearity. The second feature is a predictive model for the TBL pressure loading, which is developed from previous work (Blevins et al, 2009;Laganelli and Wolfe, 1993;Laganelli and Howe, 1977;Coe and Chyu, 1972). In this section, the baseline aerothermoelastic model is briefly reviewed, followed by an in-depth description of the TBL loading model.…”

“…Note that these semi-empirical models are based on time-averaged analysis of the turbulence (Laganelli and Wolfe, 1993;Laganelli and Howe, 1977;Blevins et al, 2009;Coe and Chyu, 1972). A fully evolved turbulent flow is expected to have infinitesimally small time scale (Pope, 2009), and hence approximately random temporal phase angles, τ.…”

“…Couple predictive magnitude (Blevins et al, 2009;Laganelli and Wolfe, 1993;Laganelli and Howe, 1977) and spatial phase models (Coe and Chyu, 1972) for TBL fluctuating pressure into a comprehensive aerothermoelastic framework. 2.…”