Large eddy simulation of unsteady turbulent flow structures and film-cooling effectiveness in a laidback fan-shaped hole

2D and 3D thermoelastic phenomena in double wall transpiration cooling systems for gas turbine blades and hypersonic flight

“…The way in which a cooling system maintains temperature, often determines the balance between the efficiency of such applications and the life of critical structural components [3]. Recent recognition of environmental damage levels associated with carbon dioxide emissions and fuel consumption related to aviation is an additional, timely aspect that can also be addressed through better cooling [6][7][8][9]. This is because improved thermal protection allows for higher gas temperatures to operate in the core of turbines, which increases engine efficiency and specific power output [10].…”

Multiscale analysis of thermomechanical stresses in double wall transpiration cooling systems for gas turbine blades

“…This literature has mainly dealt with either the aerothermal aspects of film cooling related to the flow of fluids around film holes to determine surface temperatures and heat conduction coefficients or mechanical aspects related to deformation and damage development, particularly around the film holes. Aerothermal studies have taken into account coolant-mainstream gas interactions [15,16], turbulence and vorticity production [17,18], crossflow orientation effects [19], and the effect of hole shape, spacing [19][20][21] and surface roughness [22]. The evaluation of mechanical performance general centres on prediction of damage development and failure under creep-fatigue conditions [23][24][25][26] informed by based on thermal-elastic stress analysis [27] and informed by thermomechanical fatigue and creep rupture experiments [25,26,28,29].…”

Systematic computational methods of unsteady flow simulation based on computational fluid dynamics

“…[20]. Zamiri et al compared LES, SAS and DES when simulating the film-cooling process and predicted turbulence and film-cooling effectiveness in a fan-shaped hole [21].…”