Wavenumber-frequency spectrumPhased arrayThis study mainly presents the updating of wavenumber-frequency spectrum models (W-F models) based on spatial correlation measurement by a phased array technique, which is critical for the evaluation of the structural vibration caused by a turbulent boundary layer...
Wavenumber-frequency spectral analyses were performed over all longitudes in the 卤15掳 latitude band using satellite-observed outgoing long-wave radiation (OLR) and NCEP-NCAR Re-analysis 10m (surface) zonal wind data. We removed estimated background spectra from the absolute spect...
1.However, less attention has been paid to the frequency-wavenumber energy spectra, which are important to the temporal statistics in turbulence and aeroacoustics.对均匀各向同性湍流的频率波数能量谱进行了初步研究,得出均匀各向同性湍流中能量随时间、空间尺度分布的解析表达式,并运用直接数值模拟的方法对理论预...
The combination of space and time in the correlation function and in the wavenumber frequency spectrum in general captures information about the convection or phase velocity of fluid motions as well as their scale and intensity. From: Aeroacoustics of Low Mach Number Flows, 2017 ...
[20]. This approach obtains the observed wavenumber-frequency spectrum of the equatorial wave modes by projecting the meridional structure of a single-level atmospheric field (after the Fourier decomposition of its x-t dependence) onto the parabolic cylinder functions associated with each y-structure ...
sensors Article A Guided Wave Sensor Enabling Simultaneous Wavenumber-Frequency Analysis for Both Lamb and Shear-Horizontal Waves Baiyang Ren *, Hwanjeong Cho and Cliff J. Lissenden * Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, PA 16802, USA; ...
Convert 533 nm to wavenumber and frequency.Units:The units of wavelength are units of length, such as {eq}\rm m {/eq} or {eq}\rm nm {/eq}. The units of wavenumber are inverse length, such as {eq}\rm cm^{-1} {/eq}. The units of frequency are inverse time, most commonly ...
159 Wavenumber Frequency Spectra of the Meridional Transport of Sensible Heat in the Mid-Troposphere of the Southern Hemisphere by S.-K. KAOl), R. L. JENNE g) and J. F. SAGENDORF 3) Summary - The wavenumber-frequency spectra of the meridional transport of sensible heat at 20 ~ 30 ~ ...
Direct measurements of the wavenumber-frequency spectrum of wall pressure fluctuations beneath a turbulent plane channel flow have been performed in an anechoic wind tunnel. A rotative array has been designed that allows the measurement of a complete map, 63×63 measuring points, of cross-power spec...
Wavenumber-frequency Spectra of the Density Near-field of a Heated Supersonic Jet 来自 掌桥科研 喜欢 0 阅读量: 3 作者:KA Daniel,DE Mayo,KT Lowe,WF Ng 摘要: An analysis of the density near-field of a heated supersonic jet is presented. The autospectra calculated from the fluctuating ...