Conference Proceedings
High-fidelity simulations of low-pressure turbines: Effect of flow coefficient and reduced frequency on losses
V Michelassi, L Chen, R Pichler, R Sandberg, R Bhaskaran
Volume 2C: Turbomachinery | American Society of Mechanical Engineers | Published : 2015
DOI: 10.1115/GT2015-43429
Abstract
Copyright © 2015 by ASME. Large Eddy Simulations validated with the aid of Direct Numerical Simulation are used to study the concerted action of reduced frequency and flow coefficient on the performance of the T106A low-preßure-turbine profile. The simulations are carried out by using a discretization in space and time that allows minimizing the accuracy loß with respect to Direct Numerical Simulation. The reference Reynolds number is 100, 000, while reduced frequency and flow coefficient cover a range wide enough to provide valid qualitative information to designers. The various configurations reveal differences in the loß generation mechanism that blends steady and unsteady boundary layer ..
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