Campus Units
Mechanical Engineering
Document Type
Conference Proceeding
Conference
AIAA Propulsion and Energy Forum
Publication Version
Published Version
Publication Date
2018
Journal or Book Title
2018 Joint Propulsion Conference
First Page
4657
DOI
10.2514/6.2018-4657
Conference Title
2018 Joint Propulsion Conference
Conference Date
July 9-11, 2018
City
Cincinnati, OH
Abstract
Gas turbine engines are generally optimized to operate at nearly a fixed speed with fixed blade geometries for the design operating condition. The performance of gas turbine reduces when operated at different operating condition. In this work, we present a parametric study to optimize gas-turbine performance under off-design conditions by articulating the rotor blades in both clockwise and counterclockwise directions. Articulating the pitch angle of turbine blades in coordination with adjustable nozzle vanes can improve performance by maintaining flow incidence angles within the optimum range at certain off-design conditions. To observe the effect of rotor pitching on the performance of the gas turbine, a computational fluid dynamics (CFD) study is performed using the finite element formulation for compressible flows with moving domain. Results obtained from the CFD simulation for different rotor pitch angles are presented in this paper.
Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Language
en
File Format
application/pdf
Recommended Citation
Rajanna, Manoj R.; Xu, Fen; Hsu, Ming-Chen; Bazilevs, Yuri; Murugan, Muthuvel; Ghoshal, Anindya; and Bravo, Luis, "Optimizing Gas-Turbine Operation using Finite-Element CFD Modeling" (2018). Mechanical Engineering Conference Presentations, Papers, and Proceedings. 196.
https://lib.dr.iastate.edu/me_conf/196
Comments
This proceeding was published as Rajanna, Manoj R., Fei Xu, Ming-Chen Hsu, Yuri Bazilevs, Muthuvel Murugan, Anindya Ghoshal, and Luis G. Bravo. "Optimizing Gas-Turbine Operation using Finite-Element CFD Modeling." In 2018 Joint Propulsion Conference, (2018): 4657. doi: 10.2514/6.2018-4657 . Posted with permission.