2021/01/28 by Tomohiro Tanogami, Shin-ichi Sasa
Chemistry · Engineering · Mathematics · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Cascade #Chemistry #Critical point (mathematics) #Energy cascade #Fluid Dynamics and Turbulent Flows #Length scale #Mathematics #Mechanics #Molecule #Phase Equilibria and Thermodynamics #Physics #Quantum mechanics #Statistical physics #Supercritical fluid #Thermodynamics #Turbulence #Van der Waals equation #cond-mat.stat-mech #physics.flu-dyn #van der Waals force
paper · pdf · doi:10.1103/physrevresearch.3.l032027
published as Phys. Rev. Research 3, 032027 (2021) · 18 pages, 2 figures. Minor revisions are made in ver. 2. arXiv admin note: text overlap with arXiv:2009.11057
arxiv created 2021/01/28 · openalex publication_date 2021/07/30 · arxiv updated 2021/08/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate a quite strong turbulence in a supercritical fluid near a gas-liquid critical point. Specifically, we consider a case in which the Kolmogorov scale is much smaller than the equilibrium correlation length . Although equilibrium critical fluctuations are destroyed by turbulence, still provides a crossover length scale between two types of energy cascade. At scales much larger than , the Richardson cascade becomes dominant, whereas at scales much smaller than , another type of cascade, which we call the van der Waals cascade, is induced by density fluctuations. Experimental conditions required to observe the van der Waals cascade are also discussed.