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Sanjay Nambiar, Anan Ashrabi Ananno, Herman Titus, Anton Wiberg and Mehdi Tarkian
In the quest to enhance the efficiency of gas turbines, there is a growing demand for innovative solutions to optimize high-pressure turbine blade cooling. However, the traditional methods for achieving this optimization are known for their complexity an...
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Filippo Merli, Nicolas Krajnc, Asim Hafizovic and Emil Göttlich
The efficiency assessment of a high-pressure turbine (HPT) stage is complicated by the presence of upstream and downstream purge flows. In fact, the efficiency calculation is often based on mass flow-averaged values of total temperature at the stage inle...
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S. Hamed Fatemi Alavi, Amirreza Javaherian, S. M. S. Mahmoudi, Saeed Soltani and Marc A. Rosen
Gas turbine power plants have important roles in the global power generation market. This paper, for the first time, thermodynamically examines the impact of steam injection for a combined cycle, including a gas turbine cycle with a two-stage turbine and...
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Kenichiro Takeishi and Robert Krewinkel
In the coming carbon-neutral era, industrial gas turbines (GT) will continue to play an important role as energy conversion equipment with high thermal efficiency and as stabilizers of the electric power grid. Because of the transition to a clean fuel, s...
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Kefu Wang, Yiqun Ao, Kai Zhao, Tao Zhou and Feng Li
Shaped cooling holes have received considerable attention in recent years due to their potential to improve heat transfer while minimizing pressure drop. In this study, the effects of lobe-shaped cooling holes on film cooling performance and turbulent fl...
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Zhaohui Yao, Yuanzhao Guo, Jun Niu, Zhiguang Jin, Tianhao Yu, Baojun Guo, Wenhao Pu, Xin Wei, Feng Jin, Bo Li and Mengying Liu
A model of a NUAA-PTRE pre-cooled air turbine engine was established. The design point parameters of the engine were optimized, including the pressure ratio, air flow rate of the compressor, efficiency, throat area, and efficiency of the turbine. The air...
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Ioannis Kolias, Nikolaos Aretakis, Alexios Alexiou and Konstantinos Mathioudakis
Disks in gas turbines are optimized for minimum weight, while satisfying both geometry and stress constraints, in order to minimize the engine production, operation, and maintenance costs. In the present paper, a tool is described for the preliminary mec...
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Dongsuk Kim, Majid Asli and Klaus Höschler
As the issue of pollutant emissions from aviation propulsion escalates, research into alternative powertrains is gaining momentum. Two promising technologies are the Hybrid Electric Propulsion System (HEPS) and Pressure Gain Combustion (PGC). HEPS is exp...
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Anitha Kumari Azmeera, Prakash Jadhav and Chhaya Lande
Upgrading abradable or wearable coatings in the high-temperature zone of aero engines is advised to increase the efficiency and high-density power in gas turbine engines for military or commercial fixed-wing and rotary-wing aircraft. The development of t...
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Ali Dinc, Ali Mamedov, Ertugrul Tolga Duran, Fethi Abbassi, Ibrahim Elbadawy, Kaushik Nag, Mehdi Moayyedian, Mohamed Fayed, Murat Otkur and Yousef Gharbia
In this study, the effect of inlet air cooling on greenhouse gas (GHG) emissions and engine performance for a land-based gas turbine engine was investigated under varying ambient temperatures (15?55 °C). The study aimed to reduce GHG emissions while impr...
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