This paper numerically investigates the turbulent fluid flow and heat transfer characteristics of high-temperature steam flow in a circumferential rectangular channel, resembling the cross-section of the manufacturing machine of certain automotive parts. Simulations are carried out in the finite volume solver, Ansys Fluent with the k-ε turbulence model as a closure. The circumferential rectangular channel is modified by circumferentially placing twisted tapes in an attempt to enhance the heat transfer rate. Enhancing the heat transfer rate aids in achieving the ongoing requirement of the automotive industry to reduce manufacturing time and thereby increase the productivity rate. The cases considered for the study are a) a circumferential channel (conventional), b) a circumferential channel with one twisted tape placed at the center, c) a circumferential channel with three twisted tapes arranged equidistantly, d) a circumferential channel with five twisted tapes arranged equidistantly. Transient simulations are performed for a straight and a circumferential rectangular channel of the same length of curvature to analyze the effect of curvature in a channel equipped with twisted tapes. It is observed from the simulation results that the heat transfer rate in the straight and circumferential channel with the twisted tapes is higher than the channel without the twisted tapes, with the highest heat transfer rate in the channel modified with five twisted tapes. As the number of twisted tapes increases the pressure drop increases, adversely affecting the overall thermal performance. The rate of condensation in a circumferential channel is slightly less than that of a straight channel, however, the wall temperature of the circumferential channel is higher than that of the straight channel due to the effect of curvature. The thermal enhancement factor is greater than one for the circumferential rectangular channel owing to a reduction in the pressure drop penalty. It is concluded that the addition of twisted tape improves the heat transfer rate and the overall thermal performance of the circumferential rectangular channel which is a defined requirement for the automobile industry.