English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

This work demonstrates the effect of different shapes and positions of a wavy flag vortex generator on the heat transfer in a rectangular channel using Computational Fluid Dynamics (CFD) analysis. It covers the shape optimisation as well as the position optimisation of the shape optimised flag to achieve the best heat transfer enhancement. The result of post analysis shows that the shape optimised flag is the combination of rectangular and triangular flag and the optimised position is the flags arranged horizontally along the breadth of the channel. Average Nusselt number in the shape optimised flag is 20.5%, 20.88% and 21.35% higher whereas in best optimised position in which 3 shape optimised flags are used it is 63.18%, 67.87% and 73.03% higher than that of no flag condition for  Re  8236, 12354 and 18344, respectively. This work also covers the experimental validation for the result of position optimisation. Heat transfer enhancement by introducing additional turbulence have been widely studied, but the use of flag, the effect of different shapes of flag and the flag positions for improving the heat transfer have not been explored much in practical applications. This paper thus presents the use of flag for heat transfer enhancement.

Numerical investigation and experimental validation of shape and position optimisation of a static wavy flag for heat transfer enhancement