Correlations for free convection and surface radiation in a square cavity

Internal baffles to reduce the natural convection in the voids of hollow blocks

“…Due to the importance of radiation component of heat transfer, the same researches performed another study (Balaji and Venkateshan 1994) to obtain comprehensive correlations for convection and radiation. Recently, Ait-taleb et al (2008) performed a numerical investigation to study numerically the coupling between conduction, natural convection, and surface radiation in horizontal hollow structures heated from below or above.…”

Effect of surface radiation on RBC in cavities heated from below

“…Balaji and Venkateshan [1,2] carried out numerical investigations of free convection coupled with surface radiation in a differentially heated square cavity. They showed that surface radiation leads to a drop in the convective component but this reduction tends to be compensated by the radiative transfer between active walls.…”

Heat Transfer and Air Flow in a Domestic Refrigerator

“…Several authors [31][32][33][34] showed by experimental and numerical approaches that these two heat transfer modes occur simultaneously. Ramesh and Venkateshan 32 showed experimentally that for a square enclosure (vertical walls maintained at 35 and 65°C, adiabatic horizontal walls, Ra = 5 × 10 5 ), the heat transfer by convection and radiation between high emissive vertical walls (ε = 0.85) is twice of that of polished ones (ε = 0.05).…”

“…Ramesh and Venkateshan 32 showed experimentally that for a square enclosure (vertical walls maintained at 35 and 65°C, adiabatic horizontal walls, Ra = 5 × 10 5 ), the heat transfer by convection and radiation between high emissive vertical walls (ε = 0.85) is twice of that of polished ones (ε = 0.05). Balaji and Venkateshan 31 proposed correlations established from numerical simulations to express the convection and radiation in a square cavity as a function of ε, Ra, T c /T h and a radiation convection interaction parameter ) .…”