Results 11 to 20 of about 412,489 (141)

Development and application of tail brush elastic test device [PDF]

Scientific Reports
The shield tail brush loss elasticity is the key reason for the failure of shield tail seal. However, due to the limitation of test equipment, there is little research on the elastic properties of tail brush.
Jingkai Li, Jingbo Guo, Shaopu Yang, Mengze Han, Jie Li, Ziyue Zhang, Zifeng Ren, Jun Ge, Jinbo Liu   +8 more
doaj   +2 more sources

Theoretical and numerical investigation into brush seal hysteresis without pressure differential

Advanced Composites Letters, 2019
Brush seal is a novel type contact seal, and it is well-known due to its excellent performance. However, there are many intrinsic drawbacks, such as hysteresis, which need to be solved.
Yuchi Kang, Xiangping Hu, Sharon Kao-Walter   +2 more
exaly   +2 more sources

Advanced Computational Investigation of Brush Seal Thermo-Fluid–Mechanical Performance Through Novel Porous Media Coefficient Derivation

Computation
Brush seals represent the most effective sealing technology, offering 5 to 10 times lower leakage flow rates, resulting in an 80% to 90% increase in sealing efficiency.
Altyib Abdallah Mahmoud Ahmed, Juan Wang, Meihong Liu, Aboubaker I. B. Idriss, Abdelgalal O. I. Abaker   +4 more
doaj   +2 more sources

A Numerical Study of the Sealing and Interstage Pressure Drop Characteristics of a Four-Tooth Three-Stage Brush Combination Seal

Applied Sciences
Premature seal failure induced by the unevenness of interstage pressure distribution in multi-stage brush seals significantly compromises the sealing efficiency of Air-Turbo Rocket (ATR) engines operating under high-pressure (megapascal-level ...
Chao Gu, Yingqun Ma, Wei Zhao, Xiuming Sui, Bin Hu, Qingjun Zhao   +5 more
doaj   +2 more sources

Computational Methodology and Experimental Validation of Porous Medium Resistance Coefficients for Two-Stage Brush Seal Based on the Three-Dimensional Tube Bundle Model

Aerospace
To address the problems where the resistance coefficients of the two-stage brush seal porous medium model rely on experimental calibration and the resistance characteristics of each stage are difficult to distinguish, this paper proposes a method without
Jiachen Sun, Dan Sun, Yongjuan Jing, Ling Zhang, Shilu Liu, Bo Peng   +5 more
doaj   +2 more sources

Microbrush bristle remnants on the bonding surface using different adhesive systems by scanning electron microscope: An in vitro study [PDF]

Dental Research Journal
Background: The shelf life of dental restorations relies primarily on the adhesion between tooth and restorative material. Numerous dental adhesive systems have been developed to play a crucial role in enhancing this adhesion.
Shraddha Padwal, Pradeep Shetty, Divya Dudulwar, Kiran Keswani, Vishwajit Lokhande, Manjiri Raje   +5 more
doaj   +2 more sources

Analysis of Brush Seal Performance in Cantilever Beam Models Based on Instantaneous Friction Coefficient Correction

Aerospace
Brush seals, as a fundamental dynamic sealing technology in the aerospace and energy propulsion industries, require performance enhancement through instantaneous adjustment of the friction coefficient and force analysis of brush filaments.
Guiye Wen, Meihong Liu, Junjie Lei
doaj   +2 more sources

Analysis of a tunnel failure caused by leakage of the shield tail seal system

Underground Space, 2020
This paper presents an analysis of a tunnel failure accident during shield tunnel construction on Foshan Metro Line 2 in China. The failure is caused by the leakage of the multilayer seal system, which consists of several brush seals at the tail of the ...
Chao Yu, Annan Zhou, Jun Chen, Arul Arulrajah, Suksun Horpibulsuk   +4 more
doaj   +1 more source

Temperature Field and Performance Analysis of Brush Seals Based on FEA-CFD and the Porous Medium of Anisotropic Heat Transfer Models

Energies, 2023
A brush seal is a type of contact sealing technology that generates a great amount of heat during operations. The heat can affect the seal’s performance and lifespan.
Xiaolei Song, Meihong Liu, Junfeng Sun, Juan Wang, Kun Wang   +4 more
doaj   +1 more source

Study of Heat Transfer and Leakage Characteristics of Brush Seals Based on Local Temperature Non-Equilibrium Model

Machines, 2022
In this study, to improve the accuracy of the brush seal heat transfer model, based on the finite volume method (FVM) coupled with the three-dimensional Reynold-averaged Naviers-Stokes equations (RANS) equations of the Local temperature non-equilibrium ...
Jiahao Zhang, Meihong Liu, Neng Peng
doaj   +1 more source