Heat transfer, thermal stress and failure analyses in a TiB2 gas turbine stator blade

Vaferi, Kourosh; Nekahi, Sahar; Vajdi, Mohammad; Moghanlou, Farhad Sadegh; Shokouhimehr, Mohammadreza; Motallebzadeh, Amir; Sha, Jianjun; Asl, Mehdi Shahedi

doi:10.1016/j.ceramint.2019.06.184

Cited by 89 publications

(20 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In order to reduce the thermal stress of ceramic-coated superalloy turbine cooling blades, Nekahi et al [10] and Vaferi et al [11] proposed a scheme using ultra-high temperature ceramic (UHTC) diboride peptide and diboride as alternative materials for turbine stator blades. Using the COMSOL Multiphysics software, numerical simulation of the temperature and thermal stress of the first-stage vanes of a ceramic-based turbine was carried out.…”

Section: Introductionmentioning

confidence: 99%

Thermal-Fluid-Solid Coupling Analysis on the Temperature and Thermal Stress Field of a Nickel-Base Superalloy Turbine Blade

Cai

Wang

et al. 2021

Materials

View full text Add to dashboard Cite

Based on the establishment of the original and improved models of the turbine blade, a thermal–fluid–solid coupling method and a finite element method were employed to analyze the internal and external flow, temperature, and thermal stress of the turbine blade. The uneven temperature field, the thermal stress distribution characteristics of the composite cooling turbine blade under the service conditions, and the effect of the thickness of the thermal barrier coating (TBC) on the temperature and thermal stress distributions were obtained. The results show that the method proposed in this paper can better predict the ablation and thermal stress damage of turbine blades. The thermal stress of the blade is closely related to the temperature gradient and local geometric structure of the blade. The inlet area of the pressure side-platform of the blade, the large curvature region of the pressure tip of the blade, and the rounding between the blade body and the platform on the back of the blade are easily damaged by thermal stress. Cooling structure optimization and thicker TBC thickness can effectively reduce the high temperature and temperature gradient on the surface and inside of the turbine blade, thereby reducing the local high thermal stress.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermal-Fluid-Solid Coupling Analysis on the Temperature and Thermal Stress Field of a Nickel-Base Superalloy Turbine Blade

Cai

Wang

et al. 2021

Materials

View full text Add to dashboard Cite

show abstract

“…Composite materials based on transitional metal diboride and silicon carbide (MeB2-SiC) possess an exceptional high-temperature stability in air and are known as ultra-high temperature ceramics (UHTC). UHTCs are used for scramjet engines, leading edges and nose-cones of hypersonic vehicles, heat exchangers, and advanced rocket motors [1,2,3,4,5,6]. However, their high hardness and stiffness is also linked to a poor toughness and thermal shock resistance, which reduces the material performance in most high-temperature applications [7,8].…”

Section: Introductionmentioning

confidence: 99%

Reactive sintering of TiB2-SiC-CNT ceramics

Popov

Zhang

Huseynov³

et al. 2019

Ceramics International

View full text Add to dashboard Cite

TiB2-SiC ceramics with multi-wall carbon nanotubes (MW-CNT) were reactively hot pressed at 1800°C and 30 MPa. Carbon nanotubes survived the process and could be clearly observed in the sintered ceramics. The in-situ exothermic reactions between TiC, B4C and Si accelerated the densification and produced nonporous TiB2-SiC ultrahigh-temperature ceramics within one minute at 1800 °C. Although the toughness of the ceramic was not significantly affected by the CNT addition, remaining around 6 MPa•m 1/2 , the CNT presence resulted in a substantial improvement in TiB2-SiC thermal shock resistance. The Vickers hardness decreased from 27GPa for the CNT-free matrix to 21GPa for ceramic with maximum CNT content (7.4 wt.%).

show abstract

“…Solid materials have generally higher thermal conductivities than fluids. Metals possess considerably high thermal conductivity, however, some types of advanced ceramics offer considerable thermal conductivities such as ZrB2, AlN, BeO, and TiB2 [226][227][228][229][230][231]. Since the thermal conductivity of solid nanoparticles is very higher than fluids, it is expected that dispersing nanoparticles in a base fluid enhances the thermal conductivity and the heat transfer functions of the fluid.…”

Section: Thermal Conductivitymentioning

confidence: 99%

Thermal conductivity, viscosity and heat transfer process in nanofluids: A critical review

Noorzadeh

Moghanlou

Vajdi

et al. 2020

jcc

Self Cite

View full text Add to dashboard Cite

Heat transfer, thermal stress and failure analyses in a TiB2 gas turbine stator blade

Cited by 89 publications

References 65 publications

Thermal-Fluid-Solid Coupling Analysis on the Temperature and Thermal Stress Field of a Nickel-Base Superalloy Turbine Blade

Thermal-Fluid-Solid Coupling Analysis on the Temperature and Thermal Stress Field of a Nickel-Base Superalloy Turbine Blade

Reactive sintering of TiB2-SiC-CNT ceramics

Thermal conductivity, viscosity and heat transfer process in nanofluids: A critical review

Contact Info

Product

Resources

About