TY - JOUR
T1 - On frequency-domain analysis of the relation between incident turbulence and fluctuating pressures
AU - Hajj, M. R.
AU - Janajreh, I. M.
AU - Tieleman, H. W.
AU - Reinhold, T. A.
PY - 1997
Y1 - 1997
N2 - The linear and nonlinear correlations between frequency components of incident velocity and pressure fluctuations on surface mounted prisms are investigated. Normal and oblique incidence cases are considered. For each case, two wind-tunnel flow configurations were considered; one with and the other without adding small spires. In both configurations, the results show low levels of linear coherence between the incident velocity and surface pressure except at the very low frequencies. The nonlinear coherence is also very low. Consequently, the relation between frequency components of incident velocity and pressure fluctuations is not direct. The results suggest that, because of the required averaging, frequency-domain analysis is not the most suitable technique to determine the relation between incident velocity and fluctuating pressures.
AB - The linear and nonlinear correlations between frequency components of incident velocity and pressure fluctuations on surface mounted prisms are investigated. Normal and oblique incidence cases are considered. For each case, two wind-tunnel flow configurations were considered; one with and the other without adding small spires. In both configurations, the results show low levels of linear coherence between the incident velocity and surface pressure except at the very low frequencies. The nonlinear coherence is also very low. Consequently, the relation between frequency components of incident velocity and pressure fluctuations is not direct. The results suggest that, because of the required averaging, frequency-domain analysis is not the most suitable technique to determine the relation between incident velocity and fluctuating pressures.
KW - Bispectrum
KW - Nonlinear coupling
KW - Pressure
KW - Turbulence
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U2 - 10.1016/S0167-6105(97)00184-0
DO - 10.1016/S0167-6105(97)00184-0
M3 - Article
AN - SCOPUS:0031177904
SN - 0167-6105
VL - 69-71
SP - 539
EP - 545
JO - Journal of Wind Engineering and Industrial Aerodynamics
JF - Journal of Wind Engineering and Industrial Aerodynamics
ER -