Experimental Study on the Flow Pattern of Double-hemisphere Rough Elements with Different Streamwise Spacing [PDF]
Journal of Applied Fluid Mechanics, 2023 Particle image velocimetry is used to study the variation around single- and double-hemisphere rough elements with different streamwise spacings immersed in the boundary layer.
P. Chen, J. Sun, Y. T. Cheng, W. Y. Chen
doaj +1 more source
Research progress in nitrogen-doped electrically conductive silicon carbide ceramics
Cailiao gongcheng, 2022 The electrically conductive silicon carbide (SiC) ceramics that can be machined by electrical discharge machining, can not only overcome the highlight shortcomings of traditional high resistivity-grade SiC ceramics in machinability, but also maintain its
YANG Jianguo +7 more
doaj +1 more source
Techniques for Tool Life Prediction and Autonomous Tool Change Using Real-time Process Monitoring Data [PDF]
한국정밀공학회지Materials such as titanium alloys, nickel alloys, and stainless steels are difficult to machine due to low thermal conductivity, work hardening, and built-up edge formation, which accelerate tool wear. Frequent tool changes are required, often relying on
Seong Hun Ha, Min-Suk Park, Hoon-Hee Lee
doaj +1 more source
Special Probabilistic Prediction Model for Temperature Characteristics of Dynamic Fluid Processes
IEEE Access, 2019 Accurately predicting the temperature characteristics of a dynamic discharge process in different transportation conditions can improve the performance of reciprocating multiphase pumps in practice.
Hongying Deng +4 more
doaj +1 more source
Fast Multivariate Empirical Mode Decomposition
IEEE Access, 2018 The multivariate empirical mode decomposition (MEMD) has been pioneered recently for adaptively processing of multichannel data. Despite its high efficiency on time-frequency analysis of nonlinear and nonstationary signals, high computational load and ...
Xun Lang +6 more
doaj +1 more source
Two-Stage Hybrid Model for Efficiency Prediction of Centrifugal Pump
Sensors, 2022 Accurately predict the efficiency of centrifugal pumps at different rotational speeds is important but still intractable in practice. To enhance the prediction performance, this work proposes a hybrid modeling method by combining both the process data ...
Yi Liu +3 more
doaj +1 more source
An investigation into the thermo-elasto-hydrodynamic effect of notched mechanical seals
Nuclear Engineering and Technology, 2022 A 3D thermo-elasto-hydrodynamic model is developed to analyze the sealing performance of a notched mechanical seal applied in the reactor coolant pump. In the model, the generalized Reynolds equation, the energy equation coupled with notch heat balance ...
Xiangkai Meng +3 more
doaj +1 more source
Improvement of Hydrodynamics Performance of Naphtha Catalytic Reforming Reactors Using CFD [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2014 Due to high applicability of the fixed bed catalytic naphtha reforming reactors, hydrodynamic features of this kind of reactors with radial flow pattern are improved in this work by utilising computational fluid dynamics technique.
Rasool Mohammadikhah +3 more
doaj
Research on Fatigue Damage in High-Strength Steel (FV520B) Using Nonlinear Ultrasonic Testing
Shock and Vibration, 2020 In view of the early fatigue damage of high-strength steel FV520B, a nonlinear ultrasonic detection was performed on two types of fatigue samples using nonlinear Lamb waves.
Bingbing Chen +4 more
doaj +1 more source
Application of SWOT Analysis of Exploitation of Mineral Resources for Defining the Strategy of Support of Sustainable Development of the Slovak Republic [PDF]
E3S Web of Conferences, 2019 The article deals with a quantifiable approach which leads to the definition of a strategy for promoting sustainable development through the exploitation of mineral resources in Slovakia.
Ocilková Jana +2 more
doaj +1 more source