2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/147362We propose a simple stochastic model of cascading transport in wave number space to clarify the origin of intermittent behavior of fully-developed fluid turbulence. In spite of lack of nonlinearity and viscosity the model gives non-Gaussian fluctuations and multifractal scalings consistent with experimental data.4 pages, using REVTEX (Figures are inculded in text body) Replacement due to major modification of model, http://www.phys.titech.ac.jp/~tag/Chaotic DynamicsCondensed Mattertext