Numerical Study of Entropy Generation due to Coupled Laminar and Turbulent Mixed Convection and Thermal Radiation in an Enclosure Filled with a Semitransparent Medium

Table 3

The effect of radiation on the average Nusselt number (Nu).

Ra	Nu with radiation			Nu without radiation
	Ri = 0.1	Ri = 1	Ri = 10	Ri = 0.1	Ri = 1	Ri = 10
10^4 (Laminar Regime)	0.771514	0.771509	0.771506	0.642928	0.642925	0.642922
10^8 (Turbulent Regime)	26.087826	26.083974	26.045226	19.295729	19.292880	19.292760