The trailing edge of the turbine rotor blades featured lateral extraction and the fin-pins were subject to Coriolis

centrifugal force

and induced buoyancy. Experimental methods were used to study its heat transfer and flow resistance characteristics within the parameters of the actual working conditions: Reynolds number and rotation number ranging from 20 000 to 45 000 and 0 to 0155

respectively. The experimental results showed that the presence of the pin-fins made the bottom stagnation area larger

whereas it also significantly improved the heat transfer in the middle radius. The ratio of the flow resistance and the thermal performance decreased with the Reynolds number. However

the rotation enhanced the heat transfer at the top and weakened that at the bottom. In general

the rotation increased the flow resistance

while the average heat transfer and the thermal performance were deteriorated.