Aerodynamic loading acting on the stator vane in the variable nozzle turbine flow
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Date issued
2015
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of West Bohemia
Abstract
The purpose of this paper is to evaluate an aerodynamic loading acting on the stator vanes of the turbocharger
using variable nozzle turbine (VNT). Computational fluid dynamic (CFD) is applied using commercial software
ANSYS CFX. A full turbine stage CFD model is used to investigate the aerodynamic loading in several operating
points for different stator vane positions. Results are compared with the measurement on the Gas Stand testing rig.
This device burns natural gas and produces a stable flow at very high temperatures. This excludes the impact of
the engine control management, the engine vibrations, and the flow pulsations on measured values. A comparison
of measured and simulated vane aerodynamic loading provides a very good correlation. These encouraging results
show a high potential of CFD methods for further development and optimization of VNT mechanism.
Description
Subject(s)
aerodynamika, parní turbiny, výpočtová mechanika, CFD, VNT
Citation
Applied and Computational Mechanics. 2015, vol. 9, no. 1, p. 79-94