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http://dx.doi.org/10.5293/kfma.2013.16.6.032

A Study on Reliability of Kriging Based Approximation Model and Aerodynamic Optimization for Turbofan Engine High Pressure Turbine Nozzle  

Lee, Sanga (Department of Mechanical & Aerospace Engineering, Seoul National University)
Lee, Saeil (Department of Mechanical & Aerospace Engineering, Seoul National University)
Kang, Young-Seok (Korea Aerospace Research Institute)
Rhee, Dong-Ho (Korea Aerospace Research Institute)
Lee, Dong-Ho (Institute of Advenced Aerospace Technology, Department of Mechanical & Aerospace Engineering, Seoul National University)
Kim, Kyu-Hong (Department of Mechanical & Aerospace Engineering, Seoul National University)
Publication Information
The KSFM Journal of Fluid Machinery / v.16, no.6, 2013 , pp. 32-39 More about this Journal
Abstract
In the present study, three-dimensional aerodynamic optimization of high pressure turbine nozzle for turbofan engine was performed. For this, Kriging surrogate model was built and refined iteratively by supplying additional experimental points until the surrogate model and CFX result has effective difference on objective function. When the surrogate model satisfied this reliability condition and developed enough, optimum point was investigated. Commercial program PIAnO was used for optimization process and evolutionary algorithm was used for searching optimum point. As a result, difference between estimated value from Kriging surrogate model and CFD result converges within 0.01% and the optimized nozzle shape has 0.83% improved aerodynamic efficiency.
Keywords
Turbo-fan Engine; High Pressure Turbine Nozzle; Design Space; Shape optimization; Kriging model;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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