Tianwen Dong

ORCID: 0000-0001-8851-7458
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About
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Research Areas
  • Fluid Dynamics Simulations and Interactions
  • Lattice Boltzmann Simulation Studies
  • Structural Behavior of Reinforced Concrete
  • Structural Load-Bearing Analysis
  • Rheology and Fluid Dynamics Studies
  • Advanced Algorithms and Applications
  • Vibration and Dynamic Analysis
  • Advanced ceramic materials synthesis
  • Advanced Sensor and Control Systems
  • Granular flow and fluidized beds
  • Fluid Dynamics and Heat Transfer
  • Microfluidic and Bio-sensing Technologies
  • Ferroelectric and Piezoelectric Materials
  • Industrial Technology and Control Systems
  • Injection Molding Process and Properties
  • stochastic dynamics and bifurcation
  • Geotechnical Engineering and Analysis
  • Magnetic properties of thin films
  • Polymer Foaming and Composites
  • Diffusion and Search Dynamics
  • Mine drainage and remediation techniques
  • High Temperature Alloys and Creep
  • Metal and Thin Film Mechanics
  • Advanced Sensor Technologies Research
  • Dielectric properties of ceramics

Shangrao Normal University
2013-2025

Kyushu University
2021-2025

Liaoning Technical University
2018-2024

Huazhong University of Science and Technology
2023-2024

Wuhan National Laboratory for Optoelectronics
2023

Fujian Institute of Research on the Structure of Matter
2021-2022

Chinese Academy of Sciences
2021-2022

Fuzhou University
2021

Shenyang Aerospace University
2019

Lanzhou University of Technology
2017

Cement kiln dust (CKD) is a by-product of cement production, which has the shortcomings low utilization and high-temperature activation. This study combined CKD slag as precursors for preparing pastes through quicklime activation under ambient conditions. The effects content on workability (flowability setting time), macro-mechanical properties, micro-structure CKD-slag binders were analyzed. experimental results showed that rapid precipitation Ca2+, Si4+, Al3+ ions from provided more...

10.3390/ma17061253 article EN Materials 2024-03-08

Abstract Numerous vibration-assisted methods have been adopted to solve problems in polymer processing, but the introduction of vibration fields is typically done on small extruders or injectors school laboratories and industrial research rooms, which profoundly limits application technology. The purpose this study put forward a simple excitation method for all scale injection molding machines. To recover mixing performance that method, numerical investigation was carried out using CFD...

10.1515/ipp-2023-4459 article EN International Polymer Processing 2024-01-24

Vibration-assisted methods are playing a more and important role in processing polymers for twin screw extruders (TSEs) order to satisfy the increasing requirements polymetric products various applications, but existing vibrating technologies usually restricted school laboratories industrial research rooms because of their drawbacks. The purpose this study is design novel vibration method TSEs. Numerical simulation was performed based on meshless method, namely smoothed particle...

10.3390/polym17030415 article EN Polymers 2025-02-04

This paper analyzes the rudimental principle and cyber-realization of LMBP(Levenberg Marquardt Back Propagation) algorithm finds out main factors which restrict training speed this algorithm. One method quickening is proposed applied into basic LMBP When calculating increment weights biases, three times that At last, applies ameliorated simulation fault diagnosis based on some device's gearbox. The result indicates total single-hidden layer BP neural network improved approximately

10.1109/cis.2007.32 article EN 2007-12-01

Abstract This study considered numerical applications of smoothed particle hydrodynamics (SPH) to non‐Newtonian flow in filled or partially conveying elements twin‐screw extruders (TSEs). The algorithms were validated by using a plane Poiseuille flow. Two geometrical configurations with different gap investigated. A large sound speed was used prevent particles penetrating the wall boundary complex geometry. velocity field and rate Newtonian (power law) model analyzed. distribution element...

10.1002/pen.25886 article EN Polymer Engineering and Science 2022-01-12

Because of its meshless nature, the smoothed particle hydrodynamics (SPH) is ideally suitable for simulating a complex flow with free surface and moving boundary. In this paper, we used parallelized SPH to analyze in two-dimensional (2D) model twin screw extruder narrow clearance. First, order validate our algorithm, "forced revolving boundary model" previously presented by us was also work. The simulation results showed good agreement experimental results. addition, full-filled 2D simulated...

10.1021/acs.iecr.0c02961 article EN Industrial & Engineering Chemistry Research 2020-09-10

Efficient separation of particles has ever-growing importance in both fundamental research and nanotechnological applications. However, such usually suffer from some fluctuations external surroundings outside intervention unknown directions. Here, we numerically investigate the transport Brownian a straight channel with regular arrays equilateral triangle obstacles. The can be rectified by obstacles under action an oscillating (square wave) force. At given amplitude frequency force, is...

10.1063/1.5141040 article EN The Journal of Chemical Physics 2020-01-16

Zirconia (ZrO 2 ) ceramics have excellent mechanical properties, but its application is limited by ZrO -AlN low thermal conductivity (TC).Zirconia-aluminum nitride (AlN) composite with high TC were designed and successfully fabricated microwave sintering.After optimization of preparation conditions, the reaction between two substances was inhibited dense (relative density>99%) obtained.The microstructure evolution, behavior properties investigated in detail.The room temperature conductivity,...

10.15541/jim20210150 article EN Journal of Inorganic Materials 2021-01-01

Transport of chiral active particles is numerically investigated in a two-dimensional ring-shaped channel. The channel transversal asymmetric and can induce the directed transport (rotation) particles. For with small chirality, they slide along outer boundary large move some local circular orbits also exhibit rotation. Moreover, rotation effect be strongly enhanced by modifying inner geometry. Based on study particle rotation, we further separation different chiralities. It found that...

10.1063/5.0131318 article EN Chaos An Interdisciplinary Journal of Nonlinear Science 2023-02-01

Multiphase flows and mixing in partially filled conveying elements of twin-screw extruders (TSEs) were simulated by using smoothed-particle hydrodynamics (SPH). A validation SPH experiment from the literature for a co-rotating twin-cam mixer indicated good agreement. two-phase Poiseuille flow was also used to validate accuracy our approach. The results TSE show that viscosity ratio significantly affects fluids. symmetry field is broken with different parameters. In full case, pressure...

10.1155/2023/8383763 article EN cc-by International Journal of Chemical Engineering 2023-10-28

Transport of an inertial Brownian particle in oscillating potential is numerically investigated the presence external constant force. The can break thermodynamic equilibrium. Within appropriate parameter regimes, moves a direction opposite to force, which means that system exhibit phenomenon absolute negative mobility (ANM). Furthermore, it may be inferred from bifurcation diagrams ANM originates chaotic-periodic transitions, where subjected force performs reverse periodic motion due...

10.1103/physreve.110.044144 article EN Physical review. E 2024-10-29

A magnon junction consisting of ferromagnetic/antiferromagnetic/ferromagnetic insulators can manipulate the transmission current through adjusting magnetic moment alignment, offering potential for ultra-low power circuits. This study employs density functional theory calculations and atomic simulations to investigate strain-dependent modulation transport in CoFe2O4/NiO/CoFe2O4 junctions induced by bulk acoustic waves. Our results demonstrate that strain significantly alters anisotropy energy...

10.1063/5.0229840 article EN cc-by Journal of Applied Physics 2024-11-14

To address the low utilization rate and environmental pollution of mine tailings (MT) cement kiln dust (CKD), a CKD-based cemented paste backfill (CPB) material was prepared using quicklime (CaO) sulfate (DH-7) as composite alkaline activator (CAA), with CKD slag cementitious MT aggregate. The optimal dosage new CAA determined through unconfined compressive strength (UCS) analysis. reaction products, pore structure, cation dissolution ability CPB activated by were investigated, analyzing...

10.1038/s41598-024-80398-y article EN cc-by-nc-nd Scientific Reports 2024-11-22

Abstract Dispersive mixing is an important indicator for conventional co-rotating twin-screw extruders. In this work, a new asymmetric extruder was developed to improve dispersive mixing. An aqueous solution of sodium carboxymethyl cellulose (CMC-Na) employed as matrix fluid, and the red oil-based ink used tracer. A response surface model constructed predict average diameter droplets in terms feed rate, screw speed, baffle height, then corresponding optimal solutions were obtained....

10.1515/epoly-2024-0048 article EN cc-by e-Polymers 2024-01-01
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