Physique et Mécanique des Milieux Hétérogènes PMMH, UMR CNRS ESPCI-UPMC Univ. Paris, France.
Phys Rev Lett. 2011 Nov 18;107(21):214503. doi: 10.1103/PhysRevLett.107.214503.
We present an experimental study on gravity capillary wave turbulence in water. By using space-time resolved Fourier transform profilometry, the behavior of the wave energy density |η(k,ω)|(2) in the 3D (k,ω) space is inspected for various forcing frequency bandwidths and forcing amplitudes. Depending on the bandwidth, the gravity spectral slope is found to be either forcing dependent, as classically observed in laboratory experiments, or forcing independent. In the latter case, the wave spectrum is consistent with the Zakharov-Filonenko cascade predicted within wave turbulence theory.
我们进行了一项关于水的重力毛细波湍流的实验研究。通过使用时空分辨傅里叶变换轮廓术，我们检查了在各种激励频率带宽和激励幅度下 3D（k，ω）空间中波能量密度|η（k，ω）|（2）的行为。根据带宽的不同，发现重力谱斜率要么像在实验室实验中经典观察到的那样依赖于激励，要么独立于激励。在后一种情况下，波谱与波湍流理论中预测的扎哈罗夫-菲伦科纳级联一致。
