The effective internal cooling for blades is crucial for promoting the performance of gas turbines at high temperature. In this paper a novel channel is proposed with a partition between the leading and trailing side to enhance the heat transfer in both sides due to the Coriolis force. A three-dimensional numerical model with realizable k-ε turbulent model and enhanced wall treatment is built up to investigate the flow and heat transfer characteristics of the novel channel, and its performance is compared with the traditional U channel. The effects of the Reynolds number, rotation number, relative tip wall distance, and relative partition wall distance on heat transfer and pressure drop penalty are investigated in detail. We found that the performance of the novel channel is superior to that of the U channel. The Nusselt number enhancement decreases with an increase of Reynolds number. Heat transfer on both the trailing and leading sides increases with rotation number. The optimal relative tip wall distance is around 0.5, and the optimal relative partition distance from the trailing side is around 0.375. Compared to the U channel at the elevated condition, the optimal novel channel has about 20.1% higher heat transfer enhancement on the trailing wall and 56.6% on the leading wall. The present study is helpful to design efficient internal cooling channels for gas turbine blades.