الفهرس | Only 14 pages are availabe for public view |
Abstract Vortex tube is a device having no moving parts that separates a compressed gas stream into two lower pressure streams with one stream having higher temperature and the other having lower temperature than the inlet stream. This phenomenon is referred to as energy (temperature) separation. This study presents numerical and experimental studies to determine the performance of vortex tube. The performance of vortex tube is characterized by the maximum values of the cold and hot temperature difference at the outlets of the tube as well as the cooling and heating coefficients of performance. In the numerical study, ANSYS-15 software with ICM and Fluent, Computational Fluid Dynamics (CFD) is used to simulate heat transfer process and fluid flow patter through vortex tube. The basic governing equations of mass, momentum and energy conservation as well as turbulence equations are used to predict and calculate the three-dimensional, compressible turbulent flow parameters in the vortex tube (to realize the effects of operating conditions). Some assumptions and boundary conditions are applied to solve numerically the governing equations. Comparisons between published available experimental results and the present numerical results are performed to select the suitable |