โ Scribed by F. Ampofo; T.G. Karayiannis
No coin nor oath required. For personal study only.
An experimental study of low-level turbulence natural convection in an air filled vertical square cavity was conducted. The cavity was 0.75 m high ร 0.75 m wide ร 1.5 m deep giving 2D flow. The hot and cold walls of the cavity were isothermal at 50 and 10 ยฐC respectively giving a Rayleigh number of 1.58 ร 10 9 . The local velocity and temperature were simultaneously measured at different locations in the cavity and both mean and fluctuation quantities are presented, i.e. u u, u 0 rms , v v, v 0 rms , T , T 0 rms , u 0 v 0 , u 0 T 0 and v 0 T 0 . The local and average Nusselt numbers, the wall shear stress as well as the turbulent kinetic energy and the dissipation rate of the temperature variance are also presented. The experiments were conducted with very high accuracy and as such the results can form experimental benchmark data and will be useful for validation of computational fluid dynamics codes.
๐ SIMILAR VOLUMES
A numerical study of conjugate natural convection heat transfer in an air-filled rectangular cavity has been performed. Results clearly indicate that the heat transfer rate is considerably attenuated in a partitioned cavity in comparing with that for nonpartitioned cavity.
In the present work, natural convection in an open-ended square cavity packed with porous medium is simulated. The double-population approach is used to simulate hydrodynamic and thermal fields, and the Taylor series expansion and the least-squares-based lattice Boltzmann method has been implemented