Results 31 to 40 of about 296,793 (263)

Nonlinear Flutter Analysis of Labyrinth Seals

Journal of Turbomachinery, 2022
Abstract A simple nonlinear model to describe labyrinth seal flutter has been developed to assess the aeromechanic stability of straight-through labyrinth seals subjected to large gap variations. The model solves the one-dimensional integral mass, momentum, and energy equations of the seal for a prescribed motion numerically until a ...
Corral García, Roque, Greco, Michele, Matabuena, Luis   +2 more
openaire   +2 more sources

Numerical investigation on leakage characteristics of labyrinth seal for cavitation flow in the liquid hydrogen piston pump

Clean Energy
Based on the thermodynamic modified Zwart cavitation model a two-dimensional theoretical cavitation flow model of the labyrinth seal between a piston and cylinder in a liquid hydrogen piston pump is established and verified.
H. Ren, Wei Wu, Shaoqi Yang, Xiujuan Xie
semanticscholar   +1 more source

Research on leakage characteristics of labyrinth seal of air turbine used for small mobile reactor

International Journal of Advanced Nuclear Reactor Design and Technology
Brayton cycle has the characteristics of safety, high efficiency and compactness, which is the primary option for the energy conversion system of small mobile reactors.
Jiabao Lai, Zhenzhen Wang, Zideng Wang, Weixiong Chen, Junjie Yan   +4 more
doaj   +1 more source

Numerical Study of Shaft-Seal Parameters for Various Geometry Configurations and Operation Regimes [PDF]

EPJ Web of Conferences, 2018
The contribution deals with numerical modelling of flow through the shaft labyrinth seal for various geometric configurations and operating states. The objective is to obtain dependency of the mass flow rate through the seal and the outlet flow angle ...
Straka Petr
doaj   +2 more sources

Theoretical and experimental investigation on maximum pressure loads of labyrinth seal’s teeth

Advances in Mechanical Engineering, 2018
The pressure loads acting on the teeth of a labyrinth seal are usually not uniform. Sometimes, one tooth would take almost half of the total pressure difference, which is detrimental to the teeth’s working life and sealing effect.
Jie Jiang, Yiyong Yang, Yongjian Li, Weifeng Huang   +3 more
doaj   +1 more source

Remimazolam Ameliorates Autistic‐Like Behaviors via Suppression of Ferroptosis in VTA Dopaminergic Neurons in a Mouse Model of ASD

Advanced Science, EarlyView.
The ultra‐short‐acting sedative remimazolam has a sustained therapeutic effect on the core symptoms of VPA‐exposed mice. Remimazolam, a GABA agonist, exerts its therapeutic effects by protecting dopamine neurons in the VTA of VPA‐exposed mice. Meanwhile, ferroptosis is the critical mechanism by which remimazolam protects VTA dopaminergic neurons and ...
Yuxin Zhang, Jianwei Lin, Chaoyang Tong, Xin Fu, Mengqin Shan, Yue Huang, Kan Zhang, Jijian Zheng   +7 more
wiley   +1 more source

4D Printing of Magnetically Responsive Shape Memory Polymers: Toward Sustainable Solutions in Soft Robotics, Wearables, and Biomedical Devices

Advanced Science, EarlyView.
Merging 4D printing with magneto‐responsive shape memory polymers opens new avenues for intelligent, reconfigurable systems. This review navigates cutting‐edge fabrication techniques, magnetic fillers, and smart polymer matrices, unveiling their potential in soft robotics, biomedical devices, and wearable tech.
Kiandokht Mirasadi, Mohammad Amin Yousefi, Liuchao Jin, Davood Rahmatabadi, Majid Baniassadi, Wei‐Hsin Liao, Mahdi Bodaghi, Mostafa Baghani   +7 more
wiley   +1 more source

Numerical Investigations of Static and Dynamic Characteristics of a Novel Staggered Labyrinth Seal with Semi-Elliptical Structure

Lubricants
In order to optimize sealing performance, a novel labyrinth seal with semi-elliptical teeth (SET) structure is proposed in this paper, which includes semi-elliptical teeth and a series of cavities.
Shebin Yan, Zhifeng Ye, Dezhao Wang, Huihao Su, Wenjie Zhou   +4 more
semanticscholar   +1 more source

Astrocytic PCBP1 Suppresses Ferroptosis to Restore Glutamatergic Homeostasis and Mitigate Stress‐Induced Depression in Male Mice

Advanced Science, EarlyView.
This study demonstrates that polyC‐RNA‐binding protein 1 (PCBP1) in ventral hippocampal astrocytes modulates depressive‐like behaviors by regulating glutathione peroxidase 4‐mediated ferroptosis and synaptic glutamatergic transmission. PCBP1 overexpression intervention in the chronic unpredictable mild stress model rescues behavioral deficits ...
Jinyu Zhang, Binbin Zhao, Min Jia, Yan Zhao, Ye Lu, Wenyu Xi, Ziyu Zhu, Xiaojuan Gong, Qingyan Ma, Yuan Gao, Yijie Guo, Pan Li, Feng Zhu, Shuguang Wei, Xiancang Ma, Yunpeng Wang   +15 more
wiley   +1 more source

Sealing characteristics study according to the length of labyrinth seal for ammonia compressor by computational analysis

Journal of International Maritime Safety, Environmental Affairs, and Shipping
As the importance of developing eco-friendly equipment getting increase, studying and developing compressor for ammonia that is one of the eco-friendly fuel are demanded. The type of the seal, called labyrinth seal, is used in this compressor.
Mu-Kyeong Kang, Han-Ul Kim, Jing-Do Bae
doaj   +1 more source