Transient Heat Transfer Analysis Of Dimpled Rod

Abstract The considerable heat transfer increase that the dimple causes has led to an interest in its technology recently, with pressure drop penalties lesser than other heat augmentation types. The increase in heat transfer using dimples is based on the fact that the scrubbing of cooling fluid occurs within the dimple and intensifies the delay of flow separation over the surface. The researchers have used different dimple-shaped geometries from all the research studied, such as triangular, ellipsoidal, circular, square, from which the ellipsoidal shape offers better results than other shapes because of prior vortex development. The present work mainly aims to study the dimpled specimen’s transient properties and determine their influence on heat transfer.