Spectra and probability distributions of thermal flux in turbulent Rayleigh-Bénard convection
نویسندگان
چکیده
X iv :1 60 5. 00 46 9v 1 [ ph ys ic s. fl udy n] 2 M ay 2 01 6 Spectra and probability distributions of thermal flux in turbulent Rayleigh-Bénard convection Hirdesh K. Pharasi, Deepesh Kumar, Krishna Kumar, and Jayanta K. Bhattacharjee Department of Physics, Doon University, Dehradun-248 001, India Department of Chemical and Materials Engineering, University of Alberta, Edmonton AB-T6G 2V4, Canada Department of Physics, Indian Institute of Technology, Kharagpur-721 302, India Harish-Chandra Research Institute, Allahabad-211 019, India
منابع مشابه
Buoyancy statistics in moist turbulent Rayleigh–Bénard convection
We study shallow moist Rayleigh–Bénard convection in the Boussinesq approximation in three-dimensional direct numerical simulations. The thermodynamics of phase changes is approximated by a piecewise linear equation of state close to the phase boundary. The impact of phase changes on the turbulent fluctuations and the transfer of buoyancy through the layer is discussed as a function of the Rayl...
متن کاملHeat transfer and large scale dynamics in turbulent Rayleigh-Bénard convection
The progress in our understanding of several aspects of turbulent Rayleigh-Bénard convection is reviewed. The focus is on the question of how the Nusselt number and the Reynolds number depend on the Rayleigh number Ra and the Prandtl number Pr, and on how the thicknesses of the thermal and the kinetic boundary layers scale with Ra and Pr. Non-Oberbeck-Boussinesq effects and the dynamics of the ...
متن کاملHeat transfer & large-scale dynamics in turbulent Rayleigh-Bénard convection
The progress in our understanding of several aspects of turbulent Rayleigh-Bénard convection is reviewed. The focus is on the question of how the Nusselt number and the Reynolds number depend on the Rayleigh number Ra and the Prandtl number Pr, and on how the thicknesses of the thermal and the kinetic boundary layers scale with Ra and Pr. Non-Oberbeck-Boussinesq effects and the dynamics of the ...
متن کاملScaling laws in turbulent Rayleigh-Bénard convection under different geometry
A systematic study of turbulent Rayleigh-Bénard convection is carried out in two horizontal cylindrical cells of different lengths filled with water. Global heat transport and local temperature and velocity measurements are made over varying Rayleigh numbers Ra. The scaling behavior of the measured Nusselt number Nu(Ra) and the Reynolds number Re(Ra) associated with the large-scale circulation ...
متن کاملLarge Scale Circulation and boundary layer structure in a rough Rayleigh-Bénard cell filled with water
We report Particle Image Velocimetry of the Large Scale Circulation and the viscous boundary layer in turbulent thermal convection. We use two parallelepipedic Rayleigh-Bénard cells with a top smooth plate. The first one has a rough bottom plate and the second one has a smooth one so we compare the rough-smooth and the smooth-smooth configurations. The dimensions of the cell allow to consider a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2016