2

Figure 1.13. Streamwise averaged Nusselt number ratio for smooth and dimpled channel with (= 135°

Figure 1.12. Sfreamwise Avtmaged Tfrusselt tumbet ratio for- smooth and dimpled chtnnel with ß= 90e3.

Rotation Number (Ro)

Figure 1.13. Streamwise averaged Nusselt number ratio for smooth and dimpled channel with b = d35°.

Rotation Number (Ro)

Figure 1.13. Streamwise averaged Nusselt number ratio for smooth and dimpled channel with b = d35°.

APPENDIX II: FIGURES FOR PART 2

Large blower return duct ~

Large orifice plate

Infred camera

Plenum

Arrows show flow direction

Large blower bleed air return

Large blower by-pass

Large blower

Plenum Test section

Small blower return duct

Orifice plate

Plenum

Small blower

Flow straighteners

Inlet nozzle

Boundary layeH bleed-off plenum Bleed air return

Exhaust to atmosphere Orifice

Screen and

Exhaust to atmosphere Orifice

Screen and

Figure 2.1. Schematic diagrams of: (a) the experimental apparatus used for heat transfer measurements, and (b) the experimental apparatus used for flow visualizations and measurements of flow structure.

Top plate rib

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