Experimental investigation of a turbulent natural convection flow in a cubic cavity with an inner obstacle partially heated

Turbulent natural convection of a confined flow in a cubic enclosure: Effect of transient boundary conditions

“…On the contrary, the absolute value of the minimum vertical velocity along the descending boundary layer reduces with Z decreasing. The same behavior has already been observed for the stationary regime (see Weppe et al [17]). This behavior is probably due to the fact that the temperature difference between the cold plate and the vertical channel core is smaller with Z decreasing.…”

An experimental investigation on the nanofluids in a cavity under natural convection with and without the rotary magnetic field

“…The decrease in effectiveness can be attributed to the increased effective mobility as well as the enhanced Brownian and thermophoretic motion shown by the nanoparticles. The frequency of the Tollmien-Schlichting type instability (2 Hz) has been seen in the turbulent boundary layer of an isothermal vertical wall located within a natural convection cavity, as reported by Weppe et al [ 32 ]. This observation aligns with the principles of linear stability theory as applied to a vertical hot plate.…”