Fig. 1 Schematic of the experimental setup More about this image found in Schematic of the experimental setup

Fig. 2 Representation of the measured local and average circumferential outer tube surface temperature: ( a ) cross-sectional view of the test-section indicating measured local circumferential points and ( b ) frontal projected area of the test-section indicating circumferentially averaged outer t... More about this image found in Representation of the measured local and average circumferential outer tube...

Fig. 3 Validation of local variation of Nusselt number with widely used correlations More about this image found in Validation of local variation of Nusselt number with widely used correlatio...

Fig. 4 Projected frontal outer tube surface temperature contours for different diameters under different regime More about this image found in Projected frontal outer tube surface temperature contours for different dia...

Fig. 5 Distribution of local circumferential temperature on the outer tube surface along the axial tube length: ( a ) d 2 under laminar regime and ( b ) d 2 under turbulent regime More about this image found in Distribution of local circumferential temperature on the outer tube surface...

Fig. 6 Effect of tube diameter on heat transfer coefficient ratio under laminar and turbulent regime More about this image found in Effect of tube diameter on heat transfer coefficient ratio under laminar an...

Fig. 7 Comparison of different tube diameters under same Re ¯  = 1533 and same q″ = 14 kW/m 2 , Laminar Regime: ( a ) laminar wall temperature distribution and ( b ) laminar Nu distribution More about this image found in Comparison of different tube diameters under same Re ¯  = 1533 an...

Fig. 8 Comparison of different tube diameters under same Re ¯  = 5895 and same q″ = 49 kW/m 2 , Turbulent Regime: ( a ) turbulent wall temperature distribution and ( b ) turbulent Nu distribution More about this image found in Comparison of different tube diameters under same Re ¯  = 5895 an...

Fig. 9 Comparison of wall-fluid temperatures and Nusselt number of different tube diameters under the same Re ¯ range for each regime: ( a ) Laminar Regime, ( b ) Turbulent Regime, ( c ) Laminar Regime and ( d ) Turbulent Regime More about this image found in Comparison of wall-fluid temperatures and Nusselt number of different tube ...

Fig. 10 Effects of heat flux and mass flux upon mixed convection flow for different tube diameters under laminar regime: ( a ) Nu under different heat flux and ( b ) Nu under different mass flux More about this image found in Effects of heat flux and mass flux upon mixed convection flow for different...

Fig. 11 Temperature contours for different tubes under a given heat flux condition More about this image found in Temperature contours for different tubes under a given heat flux condition

Fig. 12 Temperature contours for different tubes under varying mass flux conditions More about this image found in Temperature contours for different tubes under varying mass flux conditions...

Fig. 13 Comparison of experimental Nusselt number with available correlations: ( a ) present experimental versus Ede et al. correlation, ( b ) averaged experimental Nu of d 1 with available correlations, ( c ) local experimental Nu of d 2 with available correlations, and ( d ) averaged experimen... More about this image found in Comparison of experimental Nusselt number with available correlations: ( a ...

Fig. 1 Double-wall cooling turbine airfoil with multiple impinging jets More about this image found in Double-wall cooling turbine airfoil with multiple impinging jets

Fig. 2 Schematic view of the computational domain More about this image found in Schematic view of the computational domain

Fig. 3 Top view of the investigated target plate model: ( a ) flat plate, ( b ) ribbed plate with l/S x  = 0.25, and ( c ) ribbed plate with l/S x  = 0.75 More about this image found in Top view of the investigated target plate model: ( a ) flat plate, ( b ) ri...

Fig. 4 ( a ) Schematic view of the meshed model and ( b ) grid independency test More about this image found in ( a ) Schematic view of the meshed model and ( b ) grid independency test