Results 31 to 40 of about 49,035 (213)

Influences of Tip Cooling Injection on Tip Clearance Control at Design and Off-Design Incidences

International Journal of Rotating Machinery, 2009
A numerical investigation has been performed to study the influences of cooling injection from the blade tip surface on controlling tip clearance flow in an unshrouded, high-turning axial turbine cascade.
Maosheng Niu, Shusheng Zang
doaj   +1 more source

An Improved Blade Vibration Parameter Identification Method considering Tip Clearance Variation

Shock and Vibration, 2021
Blade tip timing (BTT) technology is the most effective means for real-time monitoring of blade vibration. Accurately extracting the time of blade tip reaching the sensors is the key to ensure the accuracy of the BTT system. The tip clearance changes due
Liang Zhang, Qidi Wang, Xin Li
doaj   +1 more source

Experimental study of controlling tip clearance flow in a pump-jet propulsor

Zhongguo Jianchuan Yanjiu, 2023
ObjectiveThis paper aims to suppress the adverse effects of tip clearance flow on the hydrodynamic performance and unsteady excitation force of a pump-jet propulsor. MethodAs for the pre-swirl stator pump-jet propulsor, an annular flexible seal structure
Ruilin HAN, Haiting YU, Hongxing HUA, Huiyao LI, Xiuchang HUANG, Xiaoqian DONG   +5 more
doaj   +1 more source

Film cooling characteristics of squealer tip of a turbine blade

Xibei Gongye Daxue Xuebao
The high-speed and high-temperature gap leakage flow in the turbine blade tip clearance directly scours the tip of the rotor blade and generates a local high-temperature region, so the active and passive control of the gap leakage flow is very important.
WU Fangfang, XU Weijiang, LIU Cunliang, SHI Jingyin, YU Zeyu   +4 more
doaj   +1 more source

Energy performance and flow characteristics of a multiphase pump with different tip clearance sizes

Advances in Mechanical Engineering, 2019
Deep sea oil resources worldwide possess great potential for exploration; however, multiphase medium technology requires urgent development. The multiphase pump has achieved great success as one of the most advanced machinery in underwater oil and gas ...
Jinsong Zhang, Honggang Fan, Wei Zhang, Zhifeng Xie   +3 more
doaj   +1 more source

A review of blade tip clearance–measuring technologies for gas turbine engines

Measurement + Control, 2020
Blade tip clearance is one of the important parameters affecting the performance, safety and stability of a gas turbine engine. However, it is difficult to measure the tip clearance in real time and accurately during the development and test process of ...
Bing Yu, Hongwei Ke, Enyu Shen, Tianhong Zhang   +3 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Influence factors and prediction model of enstrophy dissipation from the tip leakage vortex in a multiphase pump

Scientific Reports, 2022
In a multiphase pump, tip clearance is the required distance between the blade tip and the pump body wall of the impeller, forming tip leakage vortex (TLV), causing unstable flow and energy dissipation.
Zekui Shu, Guangtai Shi, Xin Yao, Guodong Sun, Sijia Tao   +4 more
doaj   +1 more source

An epithelial GPR35 isoform supports tumor‐associated transcriptional and metabolic phenotypes

FEBS Letters, EarlyView.
GPR35 generates two functionally distinct isoforms with previously unresolved roles. GPR35‐short mediates immune‐cell chemotaxis, while GPR35‐long is enriched in colorectal cancer epithelium, where it supports increased metabolism, proliferation, and tumor‐associated transcriptional programs.
Jørgen D. Rønneberg, Martine Hjeltnes, Josephine Krieger, Joshua E. Elias, Maria Stensland, Kristian Holm, Xiaojun Jiang, Chuki Khangsar, Tuula A. Nyman, Arthur Kaser, Johannes R. Hov, Tom H. Karlsen, Nicole C. Kaneider, Frode L. Jahnsen, Georg Schneditz   +14 more
wiley   +1 more source

Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation

FEBS Letters, EarlyView.
Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang, Ruslana Romaniuk, Hristo L. Svilenov   +2 more
wiley   +1 more source