Results 21 to 30 of about 3,883 (153)

Experimental study on the overall cooling effectiveness of nozzle guide vane under high temperature and high pressure

Case Studies in Thermal Engineering, 2022
This study presents the overall cooling effectiveness of a nozzle guide vane with impingement-effusion in the conditions of the high temperature and high pressure at the mass flow ratios from KG = 0.09 to KG = 0.14. The temperature ratios change from KT =
Chuhan Qiao, Guangchao Li, Wei Zhang, Hongbin He, Feifan Duan, Pengfei Wang   +5 more
doaj   +1 more source

Study of Tangential Effusion Cooling of a Combustor Liner

Processes, 2023
Tangential effusion cooling of a combustor liner has a large difference from traditional effusion cooling on a plate. In this paper, numerical simulation is carried out to study the flow field, heat transfer characteristics and the factors affecting the cooling effectiveness of tangential effusion cooling of a combustor liner.
Ziwan Li, Pengfu Xie, Qinghua Zeng, Xuanwu Chen   +3 more
openaire   +1 more source

Surrogate-assisted multi-objective optimization of effusion cooling configurations for turbine shroud rings

Case Studies in Thermal Engineering
Effusion cooling is an effective technique for turbine shroud thermal management. However, achieving high-performance cooling structures remains challenging due to the competing requirements between thermal protection, structural integrity, and limited ...
Zhaoguo Mi, Liling Wu, Jiaxiao Yi, Xiaoyu Zhang, Weihua Yang   +4 more
doaj   +1 more source

Parametric and Correlation Study of Effusion Cooling Applied to Gas Turbine Blades

Applied Sciences
To pursue higher thermal efficiency in aero gas turbines, the contradiction between extreme high-temperature conditions and material temperature resistance limits has made advanced thermal management technologies crucial.
Jian Liu, Jiancheng Zhao, Renshuo Liu, Wenxiong Xi   +3 more
doaj   +1 more source

Conjugate heat transfer study of various cooling structures and sensitivity analysis of overall cooling effectiveness

Scientific Reports, 2022
The conjugate heat transfer of a turbine blade is influenced by several factors. To analyze the influence of each factor, the published one-dimensional conjugate heat transfer model was improved through theoretical analysis in this study.
Runzhou Liu, Haiwang Li, Ruquan You, Yi Huang, Zhi Tao   +4 more
doaj   +1 more source

Effect of Porosity and Injection Ratio on the Performance of Transpiration Cooling through Gyroids

International Journal of Turbomachinery, Propulsion and Power, 2023
This paper presents experimental measurements of adiabatic effectiveness for three transpiration cooling porosities (ϕ= 0.3, 0.4, and 0.5) constructed from gyroid lattice structures.
Benjamin J. Brimacombe, James A. Scobie, Joseph M. Flynn, Carl M. Sangan, Oliver J. Pountney   +4 more
doaj   +1 more source

A Porous Media Model for the Numerical Simulation of Acoustic Attenuation by Perforated Liners in the Presence of Grazing Flows

Applied Sciences, 2021
In this paper, a novel model is proposed for the numerical simulation of noise-attenuating perforated liners. Effusion cooling liners offer the potential of being able to attenuate combustion instabilities in gas turbine engines.
Jianguo Wang, Philip Rubini, Qin Qin
doaj   +1 more source

The Impact of Dynamic Emissivity–Temperature Trends on Spaceborne Data: Applications to the 2001 Mount Etna Eruption

Remote Sensing, 2022
Spaceborne detection and measurements of high-temperature thermal anomalies enable monitoring and forecasts of lava flow propagation. The accuracy of such thermal estimates relies on the knowledge of input parameters, such as emissivity, which notably ...
Nikola Rogic, Giuseppe Bilotta, Gaetana Ganci, James O. Thompson, Annalisa Cappello, Hazel Rymer, Michael S. Ramsey, Fabrizio Ferrucci   +7 more
doaj   +1 more source

Genetic Algorithm-Based Optimisation of a Double-Wall Effusion Cooling System for a High-Pressure Turbine Nozzle Guide Vane

International Journal of Turbomachinery, Propulsion and Power
Double-Wall Effusion Cooling schemes present an opportunity for aeroengine designers to achieve high overall cooling effectiveness and convective cooling efficiency in High-Pressure Turbine blades with reduced coolant usage compared to conventional ...
Michael van de Noort, Peter T. Ireland
doaj   +1 more source

Numerical study of effusion cooling on an adiabatic flat plate

Propulsion and Power Research, 2013
The present study aims to investigate the effectiveness of effusion film cooling on an adiabatic flat plate. Cylindrical holes of 30° inclination are used for supplying cold air to the hot primary flow. A non-dimensional parameter called the film cooling
Reaz Hasan, Agin Puthukkudi
doaj   +1 more source