Thermal–Fluid–Structure Interaction Analysis of the Impact of Structural Modifications on the Stress and Flow Parameters in a Nozzle Box Made of StE460 Steel DOI Open Access
Mateusz Bryk, Marcin Lemański, Paweł Madejski

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(24), P. 6287 - 6287

Published: Dec. 23, 2024

This study explores the impact of structural modifications on stress distribution and flow characteristics a nozzle box in steam turbine, specifically targeting components made from high-strength StE460 steel. Using Computational Fluid Dynamics (CFDs) Thermal–Fluid–Structure Interaction (Thermal–FSI) simulations, we examine effects shortening guide vanes by 7 mm. novel approach significantly reduces levels within segments, bringing them below critical thresholds thus enhancing component durability. Moreover, modification leads to improved efficiency, evidenced higher outlet velocities, temperatures, mass rates, all which contribute increased turbine power output without negatively impacting downstream dynamics. balance between durability performance underscores value targeted innovations high-temperature, high-stress environments. study’s findings suggest that such can substantially improve efficiency operational longevity, marking an important advancement industrial applications where reliability are paramount. Future work will assess long-term under variable conditions further optimize these benefits.

Language: Английский

Numerical analysis of saturated steam injection effects on steam turbine performance considering condensation losses and turbine stage efficiency DOI Creative Commons

Leyla Iraj,

Mahdi Tamimi,

Ali Jahangiri

et al.

International Communications in Heat and Mass Transfer, Journal Year: 2025, Volume and Issue: 164, P. 108876 - 108876

Published: March 23, 2025

Language: Английский

Citations

0
Progress in the research on non-equilibrium condensation of the compressor in the supercritical CO2 closed Brayton cycle system DOI

Xinzhe Zhang,

Bin Yu, Guoju Li

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(4)

Published: April 1, 2025

The supercritical carbon dioxide (S-CO2) closed Brayton cycle holds significant promise for revolutionizing the future of efficient and comprehensive new energy utilization. However, compressor operation in this is characterized by rapid pressurization, which induces substantial fluctuations temperature pressure, potentially triggering non-equilibrium condensation S-CO2. This phenomenon disrupts flow field within compressor, thereby decreasing overall performance system. Therefore, exploring mechanism great significance improving work summarizes various improvement types S-CO2 systems engineering applications across fields. Subsequently, it reviews development theories compressors, focusing on nucleation growth models. In addition, current research status characteristics under high-speed high-pressure conditions summarized, based convergent-divergent nozzle experiments simulations. systematically progress system from perspectives, such as origin technological bottleneck, nature scientific problem, state research. By reviewing blade humidity control method condensation, proposed that technology active multi-objective coordination should be direction further findings analysis can provide a reference design blades

Language: Английский

Citations

0
Influence of Impurity Particles on Non-Equilibrium Condensation Flow Characteristics in Steam Turbine DOI
Pengfei Hu, Mingyang Sun,

Yiyuan Zhao

et al.

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 135799 - 135799

Published: March 1, 2025

Language: Английский

Citations

0
Computational Fluid Dynamics Study of Erosion on 900 MW Steam Turbine ND-45 Blades Using 3D Scanning DOI Open Access

Grzegorz Bzymek,

Mateusz Bryk,

Sylwia Kruk-Gotzman

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(19), P. 4884 - 4884

Published: Oct. 4, 2024

This paper presents a comprehensive study on the impact of erosion flow characteristics through blade last stage 900 MW steam turbine. The primary objective is to understand how surface erosion, caused by prolonged exposure, affects behavior and overall efficiency class research process began with 3D scan turbine blade, using advanced laser scanning technology create detailed geometric model. As one longest blades used in turbines, it posed both technical challenge was an innovative aspect this study. resulting model served as basis for numerical simulations Computational Fluid Dynamic (CFD) methods, which allowed analysis over eroded surface. Key parameters, including velocity, pressure, turbulence, were assessed determine erosion. revealed significant changes depending degree providing valuable insights optimization maintenance. novelty lies not only use technologies but also analyzing industrial practice, findings that could enhance inform new risk management strategies.

Language: Английский

Citations

1
Study on the vortex flow field and flow-induced noise characteristics of a submarine steam regulating valve DOI
Qi Liu,

Chao Guo,

Hangbo Chen

et al.

Flow Measurement and Instrumentation, Journal Year: 2024, Volume and Issue: 102, P. 102795 - 102795

Published: Dec. 15, 2024

Language: Английский

Citations

1
Thermal–Fluid–Structure Interaction Analysis of the Impact of Structural Modifications on the Stress and Flow Parameters in a Nozzle Box Made of StE460 Steel DOI Open Access
Mateusz Bryk, Marcin Lemański, Paweł Madejski

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(24), P. 6287 - 6287

Published: Dec. 23, 2024

This study explores the impact of structural modifications on stress distribution and flow characteristics a nozzle box in steam turbine, specifically targeting components made from high-strength StE460 steel. Using Computational Fluid Dynamics (CFDs) Thermal–Fluid–Structure Interaction (Thermal–FSI) simulations, we examine effects shortening guide vanes by 7 mm. novel approach significantly reduces levels within segments, bringing them below critical thresholds thus enhancing component durability. Moreover, modification leads to improved efficiency, evidenced higher outlet velocities, temperatures, mass rates, all which contribute increased turbine power output without negatively impacting downstream dynamics. balance between durability performance underscores value targeted innovations high-temperature, high-stress environments. study’s findings suggest that such can substantially improve efficiency operational longevity, marking an important advancement industrial applications where reliability are paramount. Future work will assess long-term under variable conditions further optimize these benefits.

Language: Английский

Citations

0