Modeling and analysis of turbine blade's creep using computational fluid dynamics
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Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Altınbaş Üniversitesi / Lisansüstü Eğitim Enstitüsü
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The global population is on a steady rise, while our resources are dwindling at an alarming
rate. In order to cater to the world's energy demands, it is imperative that we transition to a
device that boasts optimal efficiency. The turbine is a well-suited option in this regard, with
gas turbines serving as a prime example of such machinery. Creep is a phenomenon
characterized by the gradual and time-dependent inelastic deformation that occurs under
mechanical loading and elevated temperatures. The phenomenon of creep is often
accompanied by various microstructural rearrangements, such as dislocation motion,
microstructure aging, and cavitation at grain boundaries. In recent decades, numerous
numerical and experimental studies have been conducted to enhance the understanding of
creep behavior in structures subjected to elevated temperatures. The three primary subjects
under consideration are the creep constitutive relationship, the creep damage evolution
equation, and the method for predicting creep life.
Previous research has focused on enhancing the efficacy and quality of gas turbines through
various methods, including film cooling, coating, and blade curvature. These techniques aim
to safeguard the turbine blades from the extreme temperatures of up to 1400°C within the
turbine, thereby prolonging their lifespan. However, the impact of these methods on the
engine's efficiency has not been a primary consideration in prior research. The objective of
this study is to improve the efficiency of gas turbines. The efficacy of the turbine blade can
be evaluated based on the temperature applied to the turbine after coating.The present study involves a simulation that utilizes defined values of temperature and
pressure to conduct a computational fluid dynamics (CFD) analysis on blade construction.
The meshing of the blade will be performed using ANSYS software, and finite element
method (FEM) calculations will be conducted. The results obtained from these calculations,
pertaining to the temperature and CFD analysis within the gas turbine of varying numbers
of blades, will be compared to determine the optimal efficiency point.
Açıklama
Anahtar Kelimeler
Computational fluid dynamics (CFD), ANSYS, Gas Turbine Blades
Kaynak
WoS Q Değeri
Scopus Q Değeri
Cilt
Sayı
Künye
Al-Obaidi, A. Y. N. (2023). Modeling and analysis of turbine blade's creep using computational fluid dynamics. (Yayınlanmamış yüksek lisans tezi). Altınbaş Üniversitesi, Lisansüstü Eğitim Enstitüsü, İstanbul.
