Transient Conjugate Heat Transfer During Free Liquid Jet Impingement on a Rotating Solid Disk

Abstract

This article presents the transient conjugate heat transfer characterization of a free liquid jet impinging on a rotating solid disk of finite thickness and radius. Calculations were done for a range of Reynolds number (500–1400), Ekman number (6.62 × 10⁻⁵–∞), disk thicknesses to nozzle diameter ratio (0.17–1.67), and solid to fluid thermal conductivity ratio (36.91–697.56) using water as the coolant. It was detected that the duration of the transient increased with disk thickness and decreased with Reynolds number and thermal conductivity ratio. A correlation for average Nusselt number for the transient heat transfer is presented.