Enhancement of thermal and flow characteristics in helically coiled tubes with corrugated surfaces by Genetic Algorithm based optimization
This study investigates the combined use of helically coiled tubes and corrugated surface
structures as two different heat transfer enhancement techniques. Both the curvature ratio
and corrugation form swirl and secondary flows, resulting in higher heat transfer rates. The
effects of pitch and depth of corrugation on the performance evaluation criteria, Nusselt
number, and friction factor are studied parametrically at different Reynolds numbers. A multi-
objective optimization is performed to obtain the best thermal–hydraulic performance, and a …
structures as two different heat transfer enhancement techniques. Both the curvature ratio
and corrugation form swirl and secondary flows, resulting in higher heat transfer rates. The
effects of pitch and depth of corrugation on the performance evaluation criteria, Nusselt
number, and friction factor are studied parametrically at different Reynolds numbers. A multi-
objective optimization is performed to obtain the best thermal–hydraulic performance, and a …
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