Results 21 to 30 of about 235,909 (235)
Nonlinear energy in a wave turbulence system; pp. 430–437 [PDF]
Proceedings of the Estonian Academy of Sciences, 2015 Single-wavenumber representations of nonlinear energies are required to investigate energy budget due to nonlinear interactions among Fourier modes in wave turbulence.
Naoto Yokoyama, Masanori Takaoka
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Remote Sensing, 2022 We used the Constellation Observing System for Meteorology, Ionosphere, and Climate-2 (COSMIC-2) dry temperature profile data from December 2019 to November 2021 to study the vertical wavenumber spectra of the potential energy of stratospheric gravity ...
Tao Qu +4 more
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A Kinetic Alfven wave cascade subject to collisionless damping cannot reach electron scales in the solar wind at 1 AU [PDF]
, 2010 (Abridged) Turbulence in the solar wind is believed to generate an energy cascade that is supported primarily by Alfv\'en waves or Alfv\'enic fluctuations at MHD scales and by kinetic Alfv\'en waves (KAWs) at kinetic scales $k_\perp \rho_i\gtrsim 1 ...
Cranmer +16 more
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Journal of Fluid Science and Technology, 2014 To examine pressure fluctuations in the near acoustic field, the wavenumber-frequency spectrum method was applied to the flow field around a square cylinder placed near a flat plate. Since the pressure fluctuations in the near field contain both acoustic
Yasuhiko OKUTSU +3 more
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Frequency Aliasing-Based Spatial-Wavenumber Filter for Online Damage Monitoring
Shock and Vibration, 2020 The spatial-wavenumber filter method can extract the specific mode of the Lamb wave, thereby distinguishing the incident wave and the damage reflection wave. This method has been widely studied for damage imaging.
Bin Liu +3 more
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IMA Journal of Numerical Analysis, 2019 We analyse the convergence of finite element discretizations of time-harmonic wave propagation problems. We propose a general methodology to derive stability conditions and error estimates that are explicit with respect to the wavenumber $k$.
T. Chaumont-Frelet, S. Nicaise
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Dynamic Analysis of Concrete Arch by Wavenumber Approach in the Frequency Domain [PDF]
Journal of Structural and Construction Engineering, 2015 The dynamic analysis of concrete arch dam by employing wavenumber approach has been investigating. In previous studies, the analysis was limited for concrete gravity dam.
Vahid Lotfi, Javad Amanabadi
doaj
On a fine localization of the Mathieu azimuthal numbers by Cassini ovals
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2013 The study is devoted to numerical and analytical problems concerning generating periodic and antiperiodic solutions of the angular (circumferential) Mathieu equation obtained for the circumferential harmonics of an elliptic cylinder.
Yuri Nikolaevich Radayev +1 more
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Dispersion Compensation Method for Lamb Waves Based on Measured Wavenumber
Shock and Vibration, 2020 In this study, a delta wavenumber dispersion compensation (∆K-DC) method was developed and applied, not only with the theoretical wavenumber but also with the measured wavenumber.
J. Li, Y. Han
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Sensors, 2021 Noncontact ultrasonic detection technology is an effective method to detect damage in time. This paper proposes a noncontact damage detection system based on air-coupled ultrasound and full-field laser vibrometer, which realizes the excitation of ...
Hui Zhang +3 more
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