Authors
L He
Publication date
2000/2/1
Journal
Proceedings of the Institution of mechanical Engineers, Part A: Journal of Power and Energy
Volume
214
Issue
1
Pages
13-22
Publisher
SAGE Publications
Description
A three-dimensional full Navier-Stokes method is developed and applied to calculations of unsteady flows through multiple blade rows in axial-flow turbomachinery. The solver adopts the cellcentred finite volume discretization and the four-stage Runge-Kutta time-marching scheme. Unsteady calculations are effectively accelerated by using a time-consistent multi-grid technique, resulting in a speed-up by a factor of 10–20 with adequate temporal accuracy. The computational efficiency and validity of the present multi-grid technique are illustrated by comparisons with the results of the conventional dual time-stepping scheme. Calculated unsteady pressures on blade surfaces for a turbine stage performances at different stator-rotor axial gaps reveals a marked three-dimensional behaviour of the interaction between incoming wakes and rotor passage-vortex structures. The time-averaged losses from unsteady …
Total citations
Scholar articles
Three-dimensional unsteady Navier—Stokes analysis of stator—rotor interaction in axial-flow turbines
L He - Proceedings of the Institution of mechanical Engineers …, 2000