WebNov 10, 2024 · Here, α, ν, and k are the thermal expansion coefficient, kinematic viscosity, and thermal diffusivity of the fluid, respectively; Δ is the temperature difference across the fluid layer of height H; and g is the gravitational acceleration. Pervious studies 7–9 7. R. H. Kraichnan, “ Turbulent thermal convection at arbitrary Prandtl number,” Phys. Fluids 5, … WebApr 24, 2024 · Turbulent Rayleigh-Bénard convection in a square cavity with rough horizontal walls is investigated at a fixed Prandtl number Pr = 0.7 over the Rayleigh number range of 10 6 ≤ Ra ≤ 10 9.We have proposed five models with rough elements of the same height but different spatial distributions to evaluate their influences on the heat transport …
Ke-Qing XIA Chair Professor PhD - ResearchGate
WebSpontaneous and stochastic reversal of large scale flow structure is an intriguing and crucial phenomenon in turbulent Rayleigh-Bénard type natural convection. This paper proposes a new control approach to eliminate the reversals through stabilising the corner flows using two small sidewall controllers. WebSpontaneous and stochastic reversal of large scale flow structure is an intriguing and crucial phenomenon in turbulent Rayleigh-Bénard type natural convection. This paper … clayton village apartments
Lagrangian coherent structures and their heat-transport ... - Springer
WebDec 26, 2024 · Abstract and Figures. In this combined experimental and numerical study on thermally driven turbulence in a rectangular cell, the global heat transport and the coherent flow structures are ... WebEddy (fluid dynamics) A vortex street around a cylinder. This can occur around cylinders and spheres, for any fluid, cylinder size and fluid speed, provided that the flow has a Reynolds number in the range ~40 to … WebJul 7, 2024 · We present an overview of the most relevant, and sometimes contrasting, theoretical approaches to Rayleigh–Taylor and mean-gradient-forced Rayleigh–Bénard two-dimensional turbulence together with numerical and experimental evidences for their support. The main aim of this overview is to emphasize that, despite the different … clayton wade williams