Investigation of Thermal and Hydraulic Performance in a Helical Two-Tube Heat Exchanger Equipped with Wire/Spring Turbulators
This study numerically investigated thermal enhancement in helical tube flows equipped with an embedded wire/spring turbulator. Five turbulator configurations (circular, square, and two different rectangular cross-sections) were examined for turbulent operation using water and three nanofluids (CuO–water, TiO2–water, a...