Effect of coolant pulsation on film cooling performance on flat plate

C Wang, Y Wang, H Wang, J Zhang… - Applied Thermal …, 2023 - Elsevier
Combined with infrared thermography tests, large eddy simulation was used to study the
square-wave pulsating film cooling on flat plate at the time-averaged blowing ratios of 0.5 …

Large eddy simulation of film cooling flow from diffusion slot hole with crossflow coolant configuration

L Ye, H Guo, Y Zhu, P Jiang - Physics of Fluids, 2023 - pubs.aip.org
A three-dimensional compressible large eddy simulation (LES) method was performed to
explore the flow and heat transfer characteristics in the hole and mixing zone of a crossflow …

Direct numerical simulation of supersonic turbulent flow with film cooling by wall-parallel blowing

JMF Peter, MJ Kloker - Physics of Fluids, 2022 - pubs.aip.org
An advanced film-cooling application is the thermal protection of the nozzle extension of
high-performance rocket engines. The extension wall needs be protected from the hot …

Study on the dynamics and wake characteristics of a floating tidal stream turbine with pitch motion under free surface

J Xu, Y Zhang, B Peng, Y Zheng, C Li, W Zang… - Physics of …, 2023 - pubs.aip.org
To improve knowledge of the unsteady hydrodynamic characteristics of a floating horizontal-
axis tidal turbine (HATT) in complex marine environments, a computational fluid dynamics …

Conjugate heat transfer analysis of internally cooled superalloy turbine blades with grooved channels

A Kumar, M Pathak - Physics of Fluids, 2023 - pubs.aip.org
The present work reports a conjugate heat transfer analysis of a turbine blade exposed to
high-temperature compressible gas flow and the convection cooling inside the blade. A …

[HTML][HTML] Development and loss mechanism of turbine secondary flows at a low Reynolds number: A synergy analysis

Z Shao, H Zhang, R Wang - Physics of Fluids, 2023 - pubs.aip.org
To further explore the development of turbine secondary flows and associated losses at a
low Reynolds number, a synergy analysis was developed and implemented. Loss is defined …

Predicting and optimizing multirow film cooling with trenches using gated recurrent unit neural network

Y Wang, Z Wang, W Wang, H Li, W Shen, J Cui - Physics of Fluids, 2022 - pubs.aip.org
The film cooling of cylindrical holes embedded in transverse trenches under superposition
has shown promise for protecting the critical components of a high-pressure turbine from …

Effect of inclination angle on the film cooling in a serpentine nozzle with strong adverse pressure gradient

Z Hui, J Shi, L Zhou, X Wei, X Sun - Physics of Fluids, 2023 - pubs.aip.org
The serpentine nozzle is widely used in military unmanned aerial vehicles to improve their
viability. The film cooling technology should be used in the serpentine nozzle to cope with …

Aerodynamic performance of profiled endwalls with upstream slot purge flow in a linear turbine cascade having pressure side separation

S Babu, S Anish - Physics of Fluids, 2021 - pubs.aip.org
In aeroengines, purge flow directly fed from the compressor (which bypasses the combustor)
is introduced through the disk space between blade rows to prevent the hot ingress. Higher …

Unsteady fluidic oscillators for active controlling boundary layer separation in an ultra-high-lift low-pressure turbine

X Qu, Y Zhang, X Lu, J Zhu, Y Zhang - Aerospace Science and Technology, 2021 - Elsevier
This study used large eddy simulation (LES) to investigate the control mechanism of a fluidic
oscillator in the suppression of non-reattachment separation of a boundary layer from an …