Difference Between Ribbed or Dimpled Systems

Abstract

The purpose of this design project is to compare the heat transfer and pressure drop phenomena in different cases. The project was carried out with two different models, that is, a channel with ribs and another with dimples with numerical data at different Reynolds Numbers. The numerical study was carried out with the Flow simulation method. The result shows that for both channels with ribs and dimples there were no significant changes due to the geometry selected in this project. However, the friction factor is comparatively higher for both geometries with the lower Reynol numbers used. Key Terms ⎯ Dimples, Gas turbine, Internal cooling, Ribs.