TY - JOUR
AU - Barbosa, J R
AB - AbstractPoor part-load performance is a well-known undesirable characteristic of gas turbines. Running off-design, both compressor and turbine lose performance. Flow misalignment at the various rows causes losses to increase sharply, thereby decreasing net output faster than decreasing fuel consumption. To bring the flow to alignment with the blade passages, it is required to restagger the blades both at the compressor and at the turbine. To avoid mechanical complexities, it is generally accepted to restagger only the stators. This work deals with a numerical approach to the simulation of a gas turbine equipped with variable stators at the compressor and at the turbine, enabling the search for better-performance operation. A computer program has been developed to simulate virtually any gas turbine having variable stators at the compressor stages and turbine nozzle guide vanes. Variable-inlet guide vanes (VIGVs), variable-stator vanes (VSVs), variable-nozzle guide vanes (VNGVs), variable-geometry compressors (VGCs) and variable-geometry turbines (VGTs) are the focus in this work, which analyses a one-shaft free power turbine for power generation in the search for performance improvement at part load.
TI - Methodology for gas turbine performance improvement using variable-geometry compressors and turbines
JF - Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy
DO - 10.1243/0957650042456980
DA - 2004-11-01
UR - https://www.deepdyve.com/lp/sage/methodology-for-gas-turbine-performance-improvement-using-variable-85qwix0i7V
SP - 541
EP - 549
VL - 218
IS - 7
DP - DeepDyve
ER -