Performance evaluation with turbulent flow and heat transfer characteristics in rectangular cooling channels with various novel hierarchical rib schemes

SF Zheng, GQ Liu, Y Zhang, HC Wang, SR Gao… - International Journal of …, 2023 - Elsevier
Turbulators, such as ribs, dimples, and pin-fins, play a vital role in the internal cooling
efficiency of turbine blades. As a typical turbulator, various rib configurations using a uniform …

An inverse optimization of turbulent flow and heat transfer for a cooling passage with hierarchically arranged ribs in turbine blades

SF Zheng, WK Lian, JX Meng, HC Wang… - International Journal of …, 2024 - Elsevier
Owing to the limited cold-air amount and pressure in supply systems, high-efficient heat
transfer with low-level friction loss is highly desired for cooling units of a turbine blade. To …

Fluid flow and heat transfer in a rectangular ribbed channel with a hierarchical design for turbine blade internal cooling

SF Zheng, GQ Liu, WK Lian, YR Yang, SR Gao… - Applied Thermal …, 2022 - Elsevier
For internal cooling of a turbine blade, various advanced rib turbulators can markedly
contribute to the heat transfer enhancement while suffering a great increase in pressure …

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 …

Numerical investigation of heat transfer characteristics of pin-fins with roughed endwalls in gas turbine blade internal cooling channels

KDC Do, DH Chung, DQ Tran, CT Dinh… - International Journal of …, 2022 - Elsevier
In modern jet engines, the effective cooling structure design is essential to both increase
turbine efficiency and, in the meantime, maintain structural integrality. Pin-fin arrays play a …

Numerical analysis for film cooling characteristics of trenched hole under the effects of rib-disturbed feed flow and curved surface

L Luo, H Yan, W Du, L Hou, Y Fu, S Wang - Physics of Fluids, 2023 - pubs.aip.org
Film holes are extensively utilized to protect the blade external surface by ejecting coolant,
forming a protective film, and separating the hot gas and blade surface. Trenched holes …

[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 …

Numerical investigation of the flows and heat transfer characteristics of internal cooling channels with separated ribs in gas turbine blades

VH Nguyen, TD Vu, CT Dinh, SG Park - Physics of Fluids, 2024 - pubs.aip.org
Gas turbine engines play a crucial role in numerous industrial domains, including power
generation, aviation, and marine propulsion. One of the major challenges in designing gas …

Experimental and numerical research on film cooling characteristics on the compound angle hole

L Li, C Liu, Z Xu, HR Zhu, F Zhang - Physics of Fluids, 2022 - pubs.aip.org
Experimental research was conducted for studying the effect of blowing ratio (M) as well as
cross-flow Reynolds number (Re c) on distribution characteristics in film cooling …

Effect of wall curvature on heat transfer and hydrodynamics in a ribbed cooling passage

SF Zheng, WK Lian, JX Meng, YR Yang, SR Gao… - International Journal of …, 2024 - Elsevier
Simplified rectangular ribbed cooling passages with a flat wall are extensively considered in
exploring the internal cooling features of turbine blades, but the realistic blade has a twisted …