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contributor authorMurugan, Muthuvel
contributor authorGhoshal, Anindya
contributor authorXu, Fei
contributor authorHsu, Ming-Chen
contributor authorBazilevs, Yuri
contributor authorBravo, Luis
contributor authorKerner, Kevin
date accessioned2017-11-25T07:16:04Z
date available2017-11-25T07:16:04Z
date copyright2017/2/5
date issued2017
identifier issn0742-4795
identifier othergtp_139_10_102601.pdf
identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4233806
description abstractGas turbine engines are generally optimized to operate at nearly a fixed speed with fixed blade geometries for the design operating condition. When the operating condition of the engine changes, the flow incidence angles may not be optimum with the blade geometry resulting in reduced off-design performance. 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 all operating conditions of a gas turbine engine. Maintaining flow incidence angles within the optimum range can prevent the likelihood of flow separation in the blade passage and also reduce the thermal stresses developed due to aerothermal loads for variable speed gas turbine engine applications. U.S. Army Research Laboratory (ARL) has partnered with University of California San Diego and Iowa State University Collaborators to conduct high fidelity stator–rotor interaction analysis for evaluating the aerodynamic efficiency benefits of articulating turbine blade concept. The flow patterns are compared between the baseline fixed geometry blades and articulating conceptual blades. The computational fluid dynamics (CFD) studies were performed using a stabilized finite element method developed by the Iowa State University and University of California San Diego researchers. The results from the simulations together with viable smart material-based technologies for turbine blade actuations are presented in this paper.
publisherThe American Society of Mechanical Engineers (ASME)
titleAnalytical Study of Articulating Turbine Rotor Blade Concept for Improved Off-Design Performance of Gas Turbine Engines
typeJournal Paper
journal volume139
journal issue10
journal titleJournal of Engineering for Gas Turbines and Power
identifier doi10.1115/1.4036359
journal fristpage102601
journal lastpage102601-6
treeJournal of Engineering for Gas Turbines and Power:;2017:;volume( 139 ):;issue: 010
contenttypeFulltext


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