Bo Zhang

TL;DR: In this paper, the authors highlight the potential contributions of Ranque-Hilsch vortex tubes in meeting the industrial requirements of energy efficiency improvement, sustainable energy utilization, and waste heat regeneration with its unique energy separation effect.

TL;DR: In this article, the effects of heat flux, subcooling, nozzle-to-surface height, and injection pressures on the surface temperature uniformity in a spray cooling application were studied, and the distribution of droplet diameter and the spray volumetric flux was found to significantly vary under the above experimental conditions.

TL;DR: In this article, a quasi-cylindrical approximation was adopted to predict the size of the vortex core size by considering the pressure gradient, and a novel analysis was conducted on the energy separation mechanism, in which the large-scale vortex structure plays an important role.

TL;DR: In this paper, a critical review and discussion on the current studying methods, findings and differences on the flow structures in vortex tube is presented, and future scopes were proposed on the experimentally and theoretically verification of these flow structures and their effects on the energy separation process and performance.

TL;DR: In this paper, a 2D laser Doppler velocimetry (LDV) measurement was adopted to investigate the mean flow field on the meridian plane, and the distributions of the axial and radial velocities, and particularly the reverse flow boundary, were obtained for understanding the characteristics of large-scale vortex structures.