Results 171 to 180 of about 402 (231)

Advances in Magnesium‐Based Thermoelectrics: A Critical Review

Advanced Materials, EarlyView.
Magnesium‐based thermoelectric materials have emerged as promising candidates for low‐to‐mid‐temperature energy conversion due to their abundance, low cost, and competitive performance. This review summarizes recent advances in Mg3X2, MgAgSb, and Mg2X systems, covering transport mechanisms, fabrication strategies, stability challenges, and device ...
Li‐Min Zhang, Li Zhang, Nan‐Hai Li, Yan‐Ling Yang, Xiao‐Lei Shi, Zhi‐Gang Chen   +5 more
wiley   +1 more source

Designable van der Waals Crystal for Artificial Neuronal Cell Mimicking

Advanced Materials, EarlyView.
Designable van der Waals crystal has been demonstrated for device‐scale neuronal cell mimicking. The structural similarity between ion‐channel in biological membranes and layered vdW lattices is realized with nano‐crystallization via Ar + H2S plasma sulfurization.
Jinhyoung Lee, Gunhyoung Kim, Dongho Lee, Seowoo Son, Hyunho Seok, Sihoon Son, Hyunbin Choi, Geonwook Kim, Geumji Back, Hyunkyu Kim, Chaerin Park, Junmin Ahn, Seongyun Je, Chaeyoung Im, Junil Cho, Magdalena Grzeszczyk, Seongho Kim, Eunseo Go, Hyunwoo Shim, Donghwan Choi, Muyoung Kim, Hyoeng‐U. Kim, Won‐Jun Jang, Taesung Kim   +23 more
wiley   +1 more source

Aeromechanical Optimization of a Winglet-Squealer Tip for an Axial Turbine

Journal of Turbomachinery, 2010
The possibility of reducing the over tip leakage loss of unshrouded axial turbine rotors has been investigated in an experiment using a linear cascade of turbine blades and by using CFD. A numerical optimization of a winglet-squealer geometry was performed. The optimization involved the structural analysis alongside the CFD.
Zbigniew Schabowski, Howard Hodson, Davide Giacche, Bronwyn Power, Mark R. Stokes   +4 more
openaire   +2 more sources

Squealer Tip Heat Transfer With Film Cooling

Volume 4: Heat Transfer, Parts A and B, 2010
Heat transfer coefficients and film cooling effectiveness values were obtained numerically on a film cooled 2-D gas turbine blade tip model featuring a cutback squealer. In addition, pressure distributions were obtained at 50% and 98% spans. The calculations were performed for a single blade with periodic boundary conditions imposed along the two mid ...
Sumanta Acharya, Gregory Kramer, Louis Moreaux, Chiyuki Nakamata   +3 more
openaire   +2 more sources

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Effects of Squealer Geometry of Turbine Blade Tip on the Tip-Leakage Flow and Loss

Journal of Thermal Science, 2021
The effective control of the tip-leakage flow and loss is of great significance to improve the aerodynamic performance of the turbine. In this paper, the evolution mechanism of tip-leakage flow in a transonic high pressure turbine with a squealer tip is investigated with numerical simulation methods.
Weihao Zhang, Zhengping Zou, Zhang Weihao   +2 more
exaly   +2 more sources

Rotating Effect on Transonic Squealer Tip Cooling Performance

Volume 5A: Heat Transfer, 2017
The aerothermal behavior of turbine blade tip has been studied for decades, mostly using stationary linear cascade. The blade rotation effect still remains unclear to the tip research community. This paper investigates two squealer tip cooling configurations with the effect of relative casing movement. The numerical method was validated against thermal
D. Zhu, S. Lu, H. Ma, Q. Zhang, J. Teng
openaire   +2 more sources

Effect of Squealer Geometry Arrangement on a Gas Turbine Blade Tip Heat Transfer

Journal of Heat Transfer, 2001
Abstract This study investigates the effect of a squealer tip geometry arrangement on heat transfer coefficient and static pressure distributions on a gas turbine blade tip in a five-bladed stationary linear cascade. A transient liquid crystal technique is used to obtain detailed heat transfer coefficient distribution.
Gm Salam Azad, Je-Chin Han, Ronald S. Bunker, C. Pang Lee   +3 more
openaire   +2 more sources

Aerothermal optimization of turbine cascade squealer tip with non-uniform squealer height

Physics of Fluids, 2023
The squealer tip has significant influence on both the aerodynamic and heat transfer characteristics of the high-pressure turbine blade. However, due to the complexity of parameterization and meshing of the squealer and the complicated flow structure within the over-tip region, the existing squealer designs in the open literature have constant squealer
Hongzhi Cheng, Hanzla Shahid, Shuyu Zhou, Wei Wang, Quanyong Xu, Penghao Duan   +5 more
openaire   +2 more sources

Effect of multiple cavities and tip injection on the aerothermal characteristics of the squealer tip in turbine stage

Applied Thermal Engineering, 2023
Shuai Bi, Junkui Mao, Feng Han
exaly   +2 more sources

Squealer Tip Treatment Design for Axial Compressors

Volume 2A: Turbomachinery, 2020
Abstract End-wall flows are amongst the main sources of losses in the rear stages of a typical multi-stage axial compressor. Reducing the tip leakage losses in the rotor blades and vanes can provide an increased efficiency and stall margin of a given axial compressor stage.
Roger Wells, Rob Miller, Senthil Krishnababu, James Taylor, Giuseppe Bruni   +4 more
openaire   +1 more source