Article
Engineering, Chemical
Wenkai Cheng, Sicheng Xin, Shichang Chen, Xianming Zhang, Wenxing Chen, Jiajun Wang, Lianfang Feng
Summary: The study used finite element method to investigate hydrodynamics in an opposite-rotating horizontal self-cleaning twin-shaft kneader, evaluated the mixing process using particle tracking technique, designed a visual experimental apparatus to study the process, and found that there is significant velocity and shear rate difference between the two shafts, resulting in good mixing efficiency.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Automation & Control Systems
Haibo Liu, Chengxin Wang, Zhaohuan Liu, Kuo Liu, Shaowei Jiang, Yongqing Wang
Summary: This study introduces the impact of LN2 cryogenic machining on the surface residual stress distribution of TC4 and establishes a numerical prediction model. Through analysis and experiments, it is shown that LN2 cryogenic machining can effectively reduce residual tensile stress.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Charlie Salame, Roland Bejjani
Summary: This research investigates the cryogenic effect during cryogenic machining of low carbon steel by changing the nozzle location. Through simulations and experiments, the optimal nozzle position for minimizing cutting forces is determined. The results show that the separation distance is a key parameter affecting the cryogenic effect.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Engineering, Marine
Pin-Jian Wang, Li Li, Jia-Bin Wu
Summary: In this study, the lightweight optimization design of the polymetallic nodule miner's front collector (FC) was presented to improve its performance and efficiency. Computational fluid dynamics (CFD) simulation and finite element method (FEM) modeling were used to calculate hydrodynamic forces and structural performance. Aluminum alloy and titanium alloy were applied in the FC, and the structures were optimized using the response surface method (RSM) surrogate model. The lightweight design reduced weight while improving structural performance.
Article
Chemistry, Physical
Roland Bejjani, Charlie Salame, Mikael Olsson
Summary: This study focuses on optimizing cryogenic machining of aerospace titanium alloy Ti-6Al-4V by investigating the effect of nozzle position. The research shows that nozzle location significantly impacts cutting temperatures and forces, with the separation distance being the dominant parameter. Cryogenic machining is found to reduce adhesion-diffusion wear and macroscopic brittle chipping of cutting inserts compared to dry turning, while also improving workpiece surface roughness by 44%.
Review
Engineering, Manufacturing
Ribeiro-Carvalho Silvia, C. H. Lauro, Horovistiz Ana, J. P. Davim
Summary: This review discusses the application of coolant assisted finite element method (FEM) simulations in machining and provides an extensive database of models. The study concludes that the available FEM models can accurately predict important variables for machining optimization, but the experimental research is still more developed.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Engineering, Civil
Moyan Zhang, Hong Xiao, Meng Wang, Mahantesh M. Nadakatti, Peng Chen
Summary: In this study, Computational Fluid Dynamics (CFD) and Finite Element Method (FEM) were used to analyze the temperature and stress distribution of mass cap concrete under wind environment, and the reliability of temperature values was verified through field tests. Wind affects concrete temperature distribution, with lower temperatures on the windward side and higher temperatures towards the leeward side. Higher wind speeds lead to increased temperature differences and maximum tensile stress, while changes in wind direction have limited effect on concrete temperature stress.
KSCE JOURNAL OF CIVIL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Congcong Ma, Pingping Niu, Xinyu An
Summary: This study proposes a numerical simulation method that combines the finite element method and computational fluid dynamics to investigate the influence of nonpotential flow on trapped modes in a two-dimensional cavity-duct system.
APPLIED SCIENCES-BASEL
(2023)
Review
Engineering, Mechanical
Yiping Wang, Mintao Du, Chuqi Su, Wenguang Wu
Summary: The study utilized a method combining CFD and FEM to compute wind noise transmitted through the vehicle underbody. It was found that this method accurately calculated interior wind noise induced by exterior airflow, revealing the contribution of underbody flow-induced noise to interior noise, and evaluating the influence of underbody panel thickness on interior wind noise.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Marek Gebauer, Tomas Blejchar, Tomas Brzobohaty, Miroslav Nevrela
Summary: The primary objective of this research was to design a methodology for analyzing the thermal field of induction motors that is more accurate, time and cost-effective, and applicable to all sizes of air-cooled induction motors. The complexity of the simulation is increased by the geometric asymmetry and asymmetric flow cooling caused by the rotation of the fan. The new methodology utilizes modified relationships based on existing findings to predict the external thermal field, avoiding the need for solving the thermal field through the conjugate heat transfer method.
Article
Engineering, Marine
Han Huang, Haoyuan Gu, Hamn-Ching Chen
Summary: The objective of this study is to develop an accurate and efficient coupled program for studying dynamic responses of moored structures in environments which cannot be modeled by conventional approach. The novelty of the coupled method lies in the development of the methodology for an overset grid system of embedding, overlapping, and moving structured grids. The results indicate that the coupled CFD-FEM method provides feasible solutions for floating systems exposed to complicated environmental conditions.
Article
Green & Sustainable Science & Technology
Yongquan Gan, Yongqing Wang, Kuo Liu, Siqi Wang, Qingbo Yu, Chang Che, Haibo Liu
Summary: Liquid nitrogen internal cooling is an environmentally friendly and sustainable green machining method that can improve machining quality and reduce tool wear. For hard-to-cut materials, liquid nitrogen internal cooling is an effective option for achieving efficient and clean production.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Biotechnology & Applied Microbiology
Yong He, Hannah Northrup, Ha Le, Alfred K. Cheung, Scott A. Berceli, Yan Tin Shiu
Summary: Hemodynamic factors play a crucial role in vascular health and diseases. This review focuses on methods for obtaining accurate hemodynamic factors and discusses the recent development of combining machine-learning with patient-specific models.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Automation & Control Systems
Pengchao Li, Chengxin Wang, Lingqi Zeng, Haibo Liu, Yongqing Wang
Summary: In this paper, the suppression mechanism of interface constraint on Poisson burr is analyzed, and an analytical model for predicting the size of Poisson burr with interface constraint is established. The model can predict the height and thickness of the Poisson burr, and it is verified by the finite element method and experiment. The inhibition effects of interface constraint on the Poisson burr under different workpiece strengths, cutting depths, cutting widths, tool rake angles, and constraint strengths are compared.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Mathematics, Interdisciplinary Applications
Qiming Zhu, Ze Zhao, Jinhui Yan
Summary: This paper presents a computational framework for surrogate modeling and optimization of pressure sensor placement in wind engineering applications. The framework uses machine learning and neural networks to construct the full-field pressure and optimize the sensor placement for accurate pressure prediction.
COMPUTATIONAL MECHANICS
(2023)
