境界層剥ぎ取り式熱交換器内の流動解析

抄録

A high-performance heat exchanger was developed. This heat exchanger has a form of double tube type, and the inner tube spins around its axis. Additionally, fixed blades are settled to touch the surfaces of the heat transfer tube. With this mechanism, the boundary layers on the heat transfer tube are scraped and the heat transfer rate is drastically improved. The heat transfer characteristics of this heat exchanger were experimentally measured in the previous study and it was suggested that the fluid flow in the heat exchanger contributes to improve the characteristics. In this study, the thermal fluid flow in the heat exchanger is numerically analyzed and its characteristics are discussed.