Low-Prandtl-number effects on global and local statistics in two-dimensional Rayleigh–Bénard convection

Y Zhang, Q Zhou - Physics of Fluids, 2024 - pubs.aip.org
We present global and local statistical properties of turbulent Rayleigh–Bénard (RB)
convection at low Prandtl numbers in this work. A series of high resolution two-dimensional …

Enforcing statistical constraints in generative adversarial networks for modeling chaotic dynamical systems

JL Wu, K Kashinath, A Albert, D Chirila, H **ao - Journal of Computational …, 2020 - Elsevier
Simulating complex physical systems often involves solving partial differential equations
(PDEs) with some closures due to the presence of multi-scale physics that cannot be fully …

Inferring turbulent velocity and temperature fields and their statistics from Lagrangian velocity measurements using physics-informed Kolmogorov-Arnold Networks

JD Toscano, T Käufer, Z Wang, M Maxey… - arxiv preprint arxiv …, 2024 - arxiv.org
We propose the Artificial Intelligence Velocimetry-Thermometry (AIVT) method to infer
hidden temperature fields from experimental turbulent velocity data. This physics-informed …

Transition to the ultimate regime in two-dimensional Rayleigh-Bénard convection

X Zhu, V Mathai, RJAM Stevens, R Verzicco, D Lohse - Physical review letters, 2018 - APS
The possible transition to the so-called ultimate regime, wherein both the bulk and the
boundary layers are turbulent, has been an outstanding issue in thermal convection, since …

[HTML][HTML] Turbulent vertical convection under vertical vibration

XQ Guo, BF Wang, JZ Wu, KL Chong, Q Zhou - Physics of Fluids, 2022 - pubs.aip.org
Vertical convection (VC) under the action of vertical vibration in a square cavity has been
investigated using direct numerical simulation. The simulations are conducted with Prandtl …

Turbulent Rayleigh–Bénard convection in a supercritical CO2-based binary mixture with cross-diffusion effects

M **ao, Y Ren, J Yang, ZC Hu - International Journal of Heat and Mass …, 2024 - Elsevier
CO 2-based binary mixtures are promising in energy engineering to improve efficiencies of
thermodynamic cycles where supercritical CO 2 prevails. Indeed, under supercritical …

Flow reversals in two-dimensional thermal convection in tilted cells

Q Wang, SN **a, BF Wang, DJ Sun, Q Zhou… - Journal of Fluid …, 2018 - cambridge.org
Flow reversals in two-dimensional thermal convection in tilted cells Page 1 J. Fluid Mech. (2018),
vol. 849, pp. 355–372. c Cambridge University Press 2018 doi:10.1017/jfm.2018.451 355 Flow …

Statistics of temperature and thermal energy dissipation rate in low-Prandtl number turbulent thermal convection

A Xu, L Shi, HD ** - Physics of Fluids, 2019 - pubs.aip.org
We report the statistical properties of temperature and thermal energy dissipation rate in low-
Prandtl number turbulent Rayleigh-Bénard convection. High resolution two-dimensional …

Non-Oberbeck-Boussinesq effects due to large temperature differences in a differentially heated square cavity filled with air

Q Wang, SN **a, R Yan, DJ Sun, ZH Wan - International Journal of Heat …, 2019 - Elsevier
We numerically investigate non-Oberbeck-Boussinesq (NOB) effects due to large
temperature differences in a two-dimensional differentially heated square cavity using low …

Temperature field of non-Oberbeck–Boussinesq Rayleigh–Bénard convection in a low aspect ratio cell

S Kashanj, DS Nobes - Physics of Fluids, 2024 - pubs.aip.org
A time-resolved experimental investigation was undertaken on the temperature evolution of
Rayleigh–Bénard convection (RBC) in a slender convection cell with aspect ratio of Γ= 0.1⁠ …