Direct Numerical Simulation of Buoyancy Driven Turbulence inside a Cubic Cavity
Direct numerical simulation (DNS) of thermally driven turbulent flows inside a fully confined eclosure is performed using state-of-the-art Chebyshev pseudo-spectral methods. The identification of turbulent coherent structures through λ 2 method is presented as well as the direct influence of turbulent eddies on the local Nusselt number and the shear stress distribution at the active walls. Furthermore a first study of turbulent kinetic energy and temperature variance together with the respective production and dissipation terms are reported for Rayleigh number Ra = 109.
KeywordsTurbulent Kinetic Energy Rayleigh Number Direct Numerical Simulation Local Nusselt Number Shear Stress Distribution
Unable to display preview. Download preview PDF.