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Numerical simulation of turbulent compressible vortex-tube flow
Author(s)
Date Issued
December 1, 1999
Type
Article
Abstract
The application of a mathematical model for the simulation of a strongly swirling flow in a vortex tube is presented. A staggered Finite Volume approach with the standard k-ε model and an algebraic Reynolds stress model (ASM) for 2D compressible, axisymmetrical flows was used to carry out all the computations. To investigate the effects of numerical diffusion on the predicted results, two second-order-differencing schemes, namely, second-order upwind and the quadratic upstream interpolation, were used to compare with the first-order hybrid scheme. Due to the simple geometry and availability of experimental data, a uniflow vortex tube was simulated to study its flow characteristics and energy separation. It is found that a temperature separation in the tube exists and predictions of the flow and temperature fields agree well with measurements. The use of ASM results in more accurate prediction than the k-ε model. Besides, influences of the numerical schemes for convection transport are found to be insignificant in this kind of flow.
Citation
Proceedings of the 1999 3rd ASME JSME Joint Fluids Engineering Conference Fedsm 99 San Francisco California Usa 18 23 July 1999 Cd Rom, 1, 1999