Results 51 to 60 of about 14,758 (224)

Numerical simulation of ball bearing flow field using the moving particle semi-implicit method

Engineering Applications of Computational Fluid Mechanics, 2022
The distribution of lubricating oil in the bearing cavity is of great significance to bearing lubrication and cooling. A new idea is provided to further study the ball bearings lubrication, to achieve effective lubrication of bearings.
Wei Wu, Chunhui Wei, Shihua Yuan
doaj   +1 more source

Self‐Powered Bearing Sensing and Real‐Time Fault Diagnosis Enabled by Non‐Invasive Triboelectric Sensors and Edge AI Acceleration

Advanced Science, EarlyView.
This study achieves the synergistic integration of self‐powered sensing and edge AI acceleration to establish a real‐time fault diagnosis system. The proposed TENG‐based self‐powered bearing sensor (NSE‐TBS) and FPGA‐accelerated edge AI framework fundamentally break through the inherent limitations of conventional monitoring systems, including complex ...
Kehui Zhu, Zhongheng Liu, Xinming Li, Jinrui Zhang, Meng Li, Yiming Guo, Lihua Han, Yanxue Wang   +7 more
wiley   +1 more source

Study on the Machined Surface Quality in High Speed Turning High Strength Steel under Cryogenic Minimum Quantity Lubrication

Journal of Harbin University of Science and Technology, 2019
Based on process parameter optimization results, the influence laws and reasons of different cutting environments and cutting parameters(cutting speed, feed), process parameter (jet temperature, cutting oil amount) under cryogenic minimum quantity ...
ZHANG Huiping, JIN Jie, WANG Zunjing, LIU Erliang   +3 more
doaj   +1 more source

A Detailed Review of Colburn and Friction Factors for Various Types of Fins Used in Compact Plate‐Fin Heat Exchangers

Heat Transfer, EarlyView.
ABSTRACT Compact plate‐fin heat exchangers (PFHEs) are commonly utilized in diverse industries, including aerospace, automotive, processing, and space. Various fin configurations, such as Plain fins, Wavy fins, Lance and Offset fins (OSFs), Perforated fins, louvered fins, and pin fins, are employed in compact heat exchangers (CHEs).
Chennu Ranganayakulu
wiley   +1 more source

Advanced Functional Materials for Marine Energy Utilization

Interdisciplinary Materials, EarlyView.
Marine renewable energy is an important future clean energy supply. We construct and sort out the material system for marine energy capture and conversion, transmission, storage, and utilization for the first time. ABSTRACT Several features of marine energy, including large reserves, sustainable utilization, environmental friendliness, make it a ...
Qiang Yu, Peipei Ge, Fazhou Wang, Shichao Bi, Bo Tang, Ion Tiginyanu, Kenneth I. Ozoemena, Xiao‐Yu Yang   +7 more
wiley   +1 more source

Evaluation of water film by reynolds' equation in deep drawing using high-pressured water jet [PDF]

, 2013
The authors had proposed a deep drawing method using high-pressured jet waters as lubricant. This method aimed to suppress the usage of oil or other chemical lubricants, which might require some additional processes for lubricant removal and become a ...
Horikoshi, Yuki, Kuboki, Takashi, Matsui, Kazumi, Murata, Makoto, Tsubokura, Makoto   +4 more
core  

Air entrainment through free-surface cusps [PDF]

, 2000
In many industrial processes, such as pouring a liquid or coating a rotating cylinder, air bubbles are entrapped inside the liquid. We propose a novel mechanism for this phenomenon, based on the instability of cusp singularities that generically form on ...
A. K. Bin, A. M. Gañán-Calvo, B. Bolton, B. W. Zeff, C. D. Ohl, C. Pozrikidis, D. A. Kessler, D. A. Spence, D. A. Weiss, D. C. Hong, D. D. Joseph, E. Cerda, I. N. Veretennikov, J. D. Sherwood, J. Eggers, J. Eggers, J. Eggers, J. Eggers, J. M. Rallison, J. R. Lister, J.-T. Jeong, Jens Eggers, L. K. Antonovskii, L. Oddershede, M. Siegel, M. Siegel, N. I. Muskhelishvili, O. Reynolds, P. G. Simpkins, S. Richardson, S. Tanveer, T. J. Singler, X. D. Shi, Y. D. Shiikhmurzaev   +33 more
core   +2 more sources

The Properties of Hexahydroisophthalic Esters as a Lubricating Oil for Jet Engines and Their Preparations by Continuous Hydrogenation

The Journal of the Society of Chemical Industry, Japan, 1961
イソフタル酸のn-オクチル,2-エチルヘキシル-(3:1)混エステルをジェット機用潤滑油として利用するため,ラネーニッケル触媒を用いて核水素添加した。そしてその65部に35部のジ-2-エチルヘキシルアジペートを配合したエステル油がMIL-7808Bの標準油ジ-2-エチルヘキシルセバケートにくらべ遜色のない性能を示すことを知った。なお水素添加油中に5～10%の未水素添加芳香族エステルが残存しても性能に変わりのないことは一つの特色であり,これに応じる連続水素添加の反応条件としては,反応温度150℃,反応圧200atm,ラネーニッケル使用量5～8%程度が適当のように思われる。
Sumio Matsuda, Shoichi Kikkawa, Kohei Noda, Eiichi Hayashi   +3 more
openaire   +2 more sources

An Improved Air Film Model for Studying the Tilt Characteristics of Aerostatic Thrust Bearings

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this study, an improved mass‐spring model that treats the lubricating air film as distributed springs is proposed to calculate the static and dynamic angular stiffness of aerostatic thrust bearings. The proposed model refines the traditional mass‐spring model by introducing the spatially varying mechanical properties of the air film and the
Hui Zhuang, Jianguo Ding, Yu Chang
wiley   +1 more source

A Novel Approach for Identifying Gas Cavitation in Oil Jet Pump for Lubrication System

Strojniški vestnik – Journal of Mechanical Engineering, 2019
Gas cavitation has significant influence on oil jet pump in lubrication system of turbo machinery. This study provides a novel approach for identifying gas cavitation in oil jet pump. Such an approach accounts for the physical process of gas cavitation and its effect on the performance of oil jet pump.
Jun Zhang, Peiyong Ma, Shuyi Gan, Shunsen Wang   +3 more
openaire   +1 more source