Article
Chemistry, Analytical
Yuekan Zhang, Mingyuan Xu, Yaoxu Duan, Xinghua Yang, Junru Yang, Xiangcheng Tang
Summary: The study showed that as the feed rate increased, static pressure, tangential velocity, and radial velocity also increased, facilitating the separation effect of the flow field. However, the increase in feed rate also led to an increase in axial velocity and turbulent kinetic energy, which was not conducive to improving separation accuracy.
Article
Engineering, Chemical
Peikun Liu, Wenxiu Fu, Lanyue Jiang, Yuekan Zhang, Xiaoyu Li, Xinghua Yang, Bo Chen
Summary: This study uses numerical simulation to investigate the effect of overflow back pressure on the internal flow field and separation performance of hydrocyclones. The results indicate that increasing the overflow back pressure leads to higher energy consumption, increased solid phase yield, higher content of fine particles, lower content of coarse particles, and reduced separation accuracy of the hydrocyclones.
Article
Agronomy
Ya-Fang Gong, Yuhui Cao, Xin-Rong Zhang
Summary: The study found that properly widening the gap between the inner tray edge and box wall can enhance precooling effectiveness, reduce energy consumption, without altering the design configuration parameters of the box. For the selected two-layer package, the optimal gap width increment was approximately 0.010 meters.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Lanyue Jiang, Peikun Liu, Yuekan Zhang, Xiaoyu Li, Xinghua Yang, Duanxu Hou, Bo Chen
Summary: The optimization of cone section structure is crucial for improving the separation performance of hydrocyclones, and the combination of multiple cone angles has more advantages than a single cone angle. In this study, CFD technology was used to simulate a biconical hydrocyclone with different cone section combinations. The influence of the combination form on internal multiphase flow motion was analyzed, and the effects of the structural parameters of double-cone hydrocyclone on separation efficiency were explored. The results showed that changing the cone section transition diameter could decrease the cut size, increase the total separation effectiveness, and improve the accuracy of separation.
Article
Engineering, Chemical
Duanxu Hou, Qiang Zhao, Peikun Liu, Lanyue Jiang, Baoyu Cui, Dezhou Wei
Summary: This study designs eight unique bottom profiles to regulate the particle circulating flow in the cylindrical hydrocyclone and explores the effects on flow field characteristics, particle spatial distribution, circulation flow rates, and grade efficiency. The findings suggest that adjusting the bottom profile parameters can improve separation performance by mitigating the misplacement of coarse particles and lowering turbulence intensity.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Mechanics
Gaurav Sharma, Joseph Majdalani
Summary: The study utilized a finite-volume solver to simulate cyclonic motion in a cylindrical vortex chamber, demonstrating the accuracy of numerical simulations through comparison with theoretical results. Additionally, a parametric study systematically investigated the impact of nozzle variations on internal flow characteristics.
Article
Chemistry, Physical
Dong-Yuan Sheng, Par G. Jonsson
Summary: The natural convection of molten steel flow in a tundish is influenced by thermal buoyancy, which affects the flow pattern and temperature distributions. Different flow control devices and top surface heat losses were compared and analyzed for their impacts on fluid behavior in the tundish.
Review
Pharmacology & Pharmacy
T. J. Snoeijink, T. G. Vlogman, J. Roosen, E. Groot Jebbink, K. Jain, J. F. W. Nijsen
Summary: This systematic review examines the parameters that influence microsphere distribution during TARE. The study suggests that injection velocity and catheter position are the most promising parameters for future research. However, the lack of clinical feasibility in the included studies limits the translation of results to clinical settings.
Article
Engineering, Multidisciplinary
Hilman Syaeful Alam, Priyono Sutikno, Tubagus Ahmad Fauzi Soelaiman, Anto Tri Sugiarto
Summary: In this study, a hydrodynamic model was developed to predict bubble size distribution in a swirling-flow nanobubble generator. The model combined computational fluid dynamics and population balance method and was evaluated with several combinations of turbulence, coalescence, and breakage models. It was found that the combination of turbulence coalescence and Luo breakage models predicted the best. The selection of appropriate turbulence models improved the modeling accuracy.
ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS
(2022)
Article
Engineering, Chemical
Sofiane Soukane, Noreddine Ghaffour
Summary: Membrane distillation (MD) process has the capability to handle highly saline solutions, but scaling up remains a challenge due to design issues, particularly temperature polarization. Utilizing CFD calculations, a combination of lateral flow and progressive feeding can significantly enhance module productivity.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
M. H. Zolfagharnasab, M. Salimi, H. Zolfagharnasab, H. Alimoradi, M. Shams, C. Aghanajafi
Summary: This study investigates the erosion mechanism on square duct elbows using CFD, revealing a novel erosion pattern. The research also concludes that the erosion rate of square ducts is generally lower than that of common pipes.
Article
Chemistry, Multidisciplinary
Yan Zheng, Fanfei Min, Hongzheng Zhu
Summary: A novelty-designed wide-neck classifier (WNC) was proposed to enhance the passing ability and classification efficiency of fine particles. Computational fluid dynamics (CFD) was used to study the flow field and velocity distribution in the newly designed WNC. The experimental results showed that the classification efficiency increased with increasing feed velocity but decreased as the feed concentration, spigot diameter, and overflow outlet diameter increased. Predictive models for classification efficiency influenced by operational and structural parameters were constructed at high correlation coefficients, with an average error of 0.28%. These results can provide valuable insights into the development of mineral classification.
Article
Engineering, Chemical
Anghong Yu, Chuanzhen Wang, Haizeng Liu, Md. Shakhaoath Khan
Summary: The study used CFD simulation to explore the fluid flow characteristics of Three Products Hydrocyclone Screen (TPHS), revealing that the static pressure decreases with increasing axial depth and there is local asymmetry present.
Article
Thermodynamics
D. Padrao, D. Hancock, J. Paterson, F. Schoofs, C. Tuck, I. Maskery
Summary: This study numerically analyzed the hydraulic and thermal performance of five surface-based lattice structures and developed predictive models for pressure drop and volumetric heat transfer coefficients. The research found that the thermal performance of the surface-based lattices is dependent on the internal geometry, with structures capable of distributing thermal energy across the entire fluid volume having higher heat transfer coefficients.
APPLIED THERMAL ENGINEERING
(2024)
Article
Engineering, Chemical
Albert Bauer, Georg Maier, Marcel Reith-Braun, Harald Kruggel-Emden, Florian Pfaff, Robin Gruna, Uwe Hanebeck, Thomas Laengle
Summary: By modifying the DEM-CFD model of an optical belt sorter to adapt to varying belt speeds, the study shows that optimized sorting setups can achieve promising sorting results at different conveyor belt velocities.
Article
Engineering, Chemical
Tao Song, Kaixi Jiang, Junwu Zhou, Deyu Wang, Ning Xu, Yuqing Feng
INTERNATIONAL JOURNAL OF MINERAL PROCESSING
(2015)
Article
Engineering, Chemical
Caie Zhang, Baoyu Cui, Dezhou Wei, Qiang Zhao, Na Luo, Yuqing Feng
Article
Engineering, Chemical
Caie Zhang, Dezhou Wei, Baoyu Cui, Tianshu Li, Na Luo
Article
Engineering, Chemical
Baoyu Cui, Caie Zhang, Dezhou Wei, Shuaishuai Lu, Yuqing Feng
Article
Engineering, Chemical
Qiang Zhao, Baoyu Cui, Dezhou Wei, Tao Song, Yuqing Feng
Article
Environmental Sciences
Jianjun Zhao, Junwu Zhou, Jie Li, Tao Song, Cheng Zhou
JOURNAL OF COASTAL RESEARCH
(2019)
Article
Engineering, Chemical
Caie Zhang, Baoyu Cui, Dezhou Wei, Shuaishuai Lu
Article
Engineering, Chemical
Wenjie Rong, Yuqing Feng, Phil Schwarz, Peter Witt, Baokuan Li, Tao Song, Junwu Zhou
Article
Engineering, Chemical
M. Philip Schwarz, Tao Song, Tianhao Yang, Junwu Zhou, Qingkai Wang
MINERALS ENGINEERING
(2019)
Article
Engineering, Chemical
Wenjie Rong, Yuqing Feng, Phil Schwarz, Tarabordin Yurata, Peter Witt, Baokuan Li, Tao Song, Junwu Zhou
Article
Energy & Fuels
Huaqing Ma, Xiuhao Xia, Lianyong Zhou, Chao Xu, Zihan Liu, Tao Song, Guobin Zou, Yanlei Liu, Ze Huang, Xiaoling Liao, Yongzhi Zhao
Summary: There is a growing interest in studying the charging and burden distribution in a blast furnace using the discrete element method (DEM). Previous DEM investigations have mainly used spherical particles, although real particles in a blast furnace are non-spherical. Different particle models have been developed to describe non-spherical particles, but their effects on particle behavior in a blast furnace are still unclear. Therefore, a comparative study was conducted to investigate how the particle shape model affects the burden charging in a blast furnace. The results showed that the number of sub-spheres, the principle of creating the particle for multi-spheres, the number of planes for polyhedrons, and the shape indices for super-ellipsoids all affect the accuracy and efficiency of the simulations.
Article
Geochemistry & Geophysics
Guobin Zou, Junwu Zhou, Tao Song, Jiawei Yang, Kang Li
Summary: This paper presents a hierarchical intelligent control method based on machine learning for optimizing mineral particle size. By applying artificial intelligence technologies, it solves various problems and achieves automation and intelligence in production, increasing throughput and reducing energy consumption.
Proceedings Paper
Automation & Control Systems
T. Song, T. H. Yang, J. W. Zhou, Q. K. Wang
Article
Engineering, Chemical
Ri Zhang, Shasha Zhang, Mengyan Ding
Summary: A thin liquid film method is proposed to evaluate sand erosion in annular flow. This method considers the direct interaction between the liquid film and gas core, as well as the entrainment and deposition of droplets. The erosion rate is calculated by considering the effects of liquid entrainment and particle velocity decay. The method is fully verified by comparing with experimental data.
Article
Engineering, Chemical
Yu Suo, Xianheng Su, Wenyuan He, Xiaofei Fu, Zhejun Pan
Summary: This research investigates the mechanical properties of sandstone-shale composite through orthogonal experimental method and discrete element simulation. The results show that different lithologies and thickness ratios can affect the strength and fracture mode of the composite rock samples.
Article
Engineering, Chemical
Maurizio Troiano, Andrea El Hassanin, Roberto Solimene, Alessia Teresa Silvestri, Fabrizio Scala, Antonino Squillace, Piero Salatino
Summary: This study investigates the potential of Fluidized Bed Finishing (FBF) for square flat AlSi10Mg specimens manufactured via Laser-Powder Bed Fusion (L-PBF) additive manufacturing technology. The results show that good finishing can be achieved using rotation-assisted tests, with a maximum reduction of surface roughness by 67%. Steel particles are found to be the most effective bed material.
Review
Engineering, Chemical
Ningbo Song, Wanzhong Yin, Jin Yao
Summary: Seawater's dissolved salts and minerals have various effects on the flotation process, including influencing the characteristics and behavior of flotation factors, as well as affecting the surface of sulfide minerals. In most cases, seawater has adverse effects on the flotation of sulfide minerals, but these effects can be mitigated by adjusting the reagents.
Article
Engineering, Chemical
Kaiqiao Wu, Shuxian Jiang, Victor Francia, Marc-Olivier Coppens
Summary: In rectangular and cylindrical annular fluidized beds, pulsating gas flow can create regular bubble patterns, overcoming challenges seen in conventional units. This study provides new opportunities for modularization of fluidized bed operations.
Article
Engineering, Chemical
Shuo Li, Huili Zhang, Jan Baeyens, Miao Yang, Zehao Li, Yimin Deng
Summary: The paper assesses the behavior of cohesive Geldart C-type particles when fluidized by air with the aid of vibration. It determines that mechanical vibration is a simple and effective method to improve the fluidity of cohesive particles during fluidization.
Article
Engineering, Chemical
Zhenfei Feng, Qingyuan Zhang, Shanpan Liang, Zhenzhou Li, Fangwen Guo, Jinxin Zhang, Ding Yuan
Summary: A new micro/mini-channel heat sink (MCHS) with a combined structure of longitudinal and transverse vortex generators is designed, using Al2O3 nanofluid as the working medium. The study explores the effects of transverse vortex generator shape and longitudinal vortex generator angle on the hydraulic and thermal characteristics, comprehensive performance, entropy generation, and exergy efficiency. The results show that the triangular transverse vortex generator improves the comprehensive performance and exergy efficiency. Combined with the longitudinal vortex generator, the MCHS achieves the best comprehensive performance, entropy generation, and exergy efficiency when the Reynolds number is 742.
Article
Engineering, Chemical
Kostas Giannis, Christoph Thon, Guoqing Yang, Arno Kwade, Carsten Schilde
Summary: This study presents a 3D convolutional neural network (3D-CNN) methodology for generating realistic 3D models of particles. The method trains on 2D projections of particle images to predict their 3D shapes, and evaluates the accuracy of the predictions using Fourier shape descriptors (FSDs). This methodology has wide applications in particle shape analysis.
Article
Engineering, Chemical
Zheng-qing Zhou, Lu-jia Chai, Yu-long Zhang, Ya-bin Wang, Ze-chen Du, Tian-yi Wang, Yu-zhe Liu
Summary: The dynamic oxidation and shell-breaking processes of aluminum nanoparticles (ANPs) during heating were studied using in situ transmission electron microscopy. The results revealed that the changes in shell thickness can be divided into three stages, and the active aluminum content of ANP decreased before shell-breaking.
Article
Engineering, Chemical
Fulei Chen, Huaqing Ma, Zihan Liu, Lianyong Zhou, Yongzhi Zhao
Summary: A particle breakage model based on the particle replacement scheme, using the polyhedral model to describe particles, is proposed in this work to accurately describe the breakage of a large number of particles. Additionally, a fast-cutting algorithm is proposed to reproduce the size distribution of progeny particles determined by the breakage model. The validation and simulation results show satisfactory accuracy, efficiency, and stability of the algorithm.
Review
Engineering, Chemical
Matteo Errigo, Christopher Windows-Yule, Massimiliano Materazzi, Dominik Werner, Paola Lettieri
Summary: Gas-solid fluidized-bed systems have advantages in terms of chemical reaction efficiency and temperature control, making them widely used in industrial applications. However, the design, scale-up, and optimization of these complex units are limited by the lack of deep physical understanding. Non-invasive and non-intrusive diagnostic techniques provide a way for researchers to study these systems without affecting the flow field or directly contacting the medium under study.
Article
Engineering, Chemical
Saeed Fateh, Mohammad Behshad Shafii, Mohammad Najafi, Cyrus Aghanajafi
Summary: Applying a magnetic field to ferrofluids alters their flow characteristics and enhances heat transfer. Through visualization and quantitative investigation, it is found that the magnetic field influences the flow patterns and velocity profiles, improving fluid mixing and vorticity magnitude.
Article
Engineering, Chemical
Lei Gao, Bingbing Wei, Xiaochuan Hu, Zaifeng Yao, Yiwen Fang, Xuejian Gao
Summary: In this study, a numerical model of sand triaxial test was established using discrete element software PFC3D, and an indoor triaxial test was conducted to calibrate the numerical model. The influence of microscopic parameters on the macroscopic mechanical response of sand was analyzed. The results showed that the friction coefficient had the greatest impact on the peak strength and residual strength of the sand's stress-strain curve, and it was positively correlated. The normal tangential stiffness ratio was negatively correlated, while the porosity and boundary flexibility stiffness had minimal influence on it.
Article
Engineering, Chemical
Xuan Liu, Jie Gong, Kai Jiang, Xiaojuan Lai, Yu Tian, Kang Zhang
Summary: This study aimed to improve the performance of lignite coal water slurries (CWSs) by synthesizing a series of three-arm amphiphilic block copolymers. By controlling the relative molecular weight, hydrophilic/hydrophobic ratio, and ionic group content, the apparent viscosity of CWSs was significantly reduced and the static stability was improved. Thermogravimetric testing and XPS analysis were conducted to reveal the mechanism behind the improved performance.
Article
Engineering, Chemical
Lanka Dinushke Weerasiri, Daniel Fabijanic, Subrat Das
Summary: Fluidization at low pressure offers significant benefits for the fine chemical industry. This study investigates the behavior of bubbles and bed expansion under low pressure conditions. It is found that lower pressure leads to larger bubbles, increased bubble quantity, and higher aspect ratio. The predictability is affected by the inhomogeneous fluidization, but low pressure fluidization can generate similar bubble sizes with lower fluidizing mass compared to atmospheric pressure.