A5043199450- Granular flow and fluidized beds
- Particle Dynamics in Fluid Flows
- Iron and Steelmaking Processes
- Mineral Processing and Grinding
- Lattice Boltzmann Simulation Studies
- Electrocatalysts for Energy Conversion
- Fluid Dynamics and Heat Transfer
- Hybrid Renewable Energy Systems
- Metallurgical Processes and Thermodynamics
- Metal Extraction and Bioleaching
- Minerals Flotation and Separation Techniques
- Fluid Dynamics and Mixing
- Fuel Cells and Related Materials
- Thermochemical Biomass Conversion Processes
- Ear and Head Tumors
- Material Dynamics and Properties
- Vehicle emissions and performance
- Innovative Microfluidic and Catalytic Techniques Innovation
- Dermatology and Skin Diseases
- Ear Surgery and Otitis Media
- Heat Transfer and Boiling Studies
- Electrodeposition and Electroless Coatings
- Indoor Air Quality and Microbial Exposure
- Cancer-related Molecular Pathways
- Autophagy in Disease and Therapy
Tongji University
2023-2025
Kaiping Central Hospital
2024
Eindhoven University of Technology
2014-2024
Weihai Science and Technology Bureau
2024
Harbin Institute of Technology
2024
First Affiliated Hospital of Xi'an Jiaotong University
2023-2024
Nanjing University of Information Science and Technology
2024
Nanjing University of Chinese Medicine
2021
Sun Yat-sen University
2021
North China University of Science and Technology
2020-2021
Fully resolved simulations of flow past fixed assemblies monodisperse spheres in face‐centered‐cubic array or random configurations, are performed using an iterative immersed boundary method. A methodology has been applied such that the computed gas–solid force is almost independent grid resolution. Simulations extend previously similar studies to a wider range solids volume fraction ( [0.1, 0.6]) and Reynolds number (Re [50, 1000]). new drag correlation combining existed correlations for...
Direct numerical simulation results for gas flow through dynamic suspensions of spherical particles is reported. The simulations are performed using an immersed boundary method, with careful correction the grid resolution effect. systems we have studied vary mean Reynolds number, solids volume fraction, as well particle/gas density ratio. On basis results, effect particle mobility on gas‐solid drag force analyzed and introduced into existing correlation that was derived from stationary...
Direct reduction of combusted iron powders using renewable energy is one the keys to ensure a carbon-neutral fuel cycle. Based on (de-)fluidization experimental study in Part I, experiments micron-sized hydrogen lab-scale gas-fluidized bed are conducted at temperatures ranging from 500 ∘C 650 ∘C. The effects temperature, velocity and concentration performance (including degree, particle morphology size change) sintering/defluidization behavior investigated. Overall, degree higher than 90%...
A numerical investigation of dynamic raceway formation in an industrial-scale blast furnace is performed using Computational Fluid Dynamics (CFD) coupled with a Discrete Element Method (DEM). The simulations are made feasible by incorporating the Flamelet Generated Manifold (FGM) method and coarse-graining to reduce computational cost while ensuring effective modeling gas phase combustion large number solid particles, respectively. model considers interactions between pulverized coal (PC)...
Enhancing the efficiency of industrial water electrolysis for hydrogen production is important energy transition. In electrolysis, produced at cathode, which forms bubbles due to diffusion dissolved in surrounding supersaturated electrolyte. Hydrogen (and oxygen) play an role achievable efficiency. The growth determined by diffusive and convective mass transfer. turn, presence affect process cathode. present study, we simulate a single bubble attached vertical cathode 30 wt% KOH solution...
Low-temperature electrochemical reduction (electroreduction) of iron oxides is a promising alternative to the conventional methods for production due its CO2-free operation and relatively low energy consumption. In this work, we demonstrate novel approach by promoting formation dendritic structures during electrodeposition, which facilitates easy harvesting deposits in powder form. Experiments were conducted using single pair parallel plate electrodes, immersed mixture hematite (Fe2O3)...
Sustainable iron production is largely driven by the urgency to reduce extensive energy consumption and emissions in iron/steel sectors. Low-temperature electroreduction of oxide technology thus revived since it directly utilizes (green) electrical with a competitive compared thermochemical reduction approach. In present work, we perform theoretical experimental studies for comparison aqueous alkaline acidic electrolytes. Electrochemical deposition behavior are experimentally investigated...
The fluidization and reduction behavior of micron-sized iron oxide powder, produced by combustion, is studied in a lab-scale cylindrical fluidized bed. minimum velocity umf found to stabilize above normalized static bed heights 0.5 H/D (static height divided the diameter). measured as function temperature between 280 860 K for both H2 N2 fluidizing gas. experimental results start deviate from Ergun correlation at temperatures 560 K, H2. A new correlation, taking cohesive inter-particle solid...
To investigate the effects of direct application ofloxacin otic drops on human traumatic tympanic membrane perforations (TMPs).Prospective, sequential allocation, controlled clinical study.Tertiary university hospital.In total, 149 patients with TMPs were recruited. They allocated sequentially to two groups: a conservative observation group (n = 75) and drops-treated 74).The closure rate, time rate otorrhoea compared between groups at 6 months.In 145 analysed. The rates medium not...
Heat exchange through confining walls is an important feature of gas-fluidized beds. However, near the wall, most temperature gradient exists in a thin thermal boundary layer, which typically smaller than grid size computational fluid dynamics method (CFD). This makes it hard to resolve distribution wall coupled and discrete element (CFD-DEM). To obtain better understanding heat transfer mechanism fluidized beds, we adopted two approaches, i.e., by imposing condition for gas phase energy...
Hydrogen-based direct reduction of iron oxide powder in gas-fluidized beds has become an emerging technology. Agglomeration fine at elevated temperatures is however one key issue hindering the technological development. To obtain better knowledge high-temperature agglomeration mechanism, (de-)fluidization behavior micron-sized combusted particles experimentally studied this Part I. Effects various operating and material variables (temperature, gas flow rate, particle size) on fluidization...
We evaluated the effects of conservative treatment and topical application epidermal growth factor (EGF) with no scaffold material on healing human traumatic tympanic membrane perforations (TMPs).Prospective, randomised clinical trial.A prospective analysis was performed between January 2015 March for TMPs. The closure rate, time, hearing gain rate purulent otorrhoea were compared EGF treatment.In total, 97 patients analysed. total rates did not significantly differ observation groups (83.0%...
The occurrence of agglomeration due to particle sintering is one the most significant technical issues hindering direct reduction process iron oxide fines (DRI) in a high-temperature fluidized bed. To get better understanding mechanism, (de-)fluidization behavior micron-sized particles 3-D bed investigated using Computational Fluid Dynamics coupled with coarse-grained Discrete Element Method (CFD-cgDEM). inter-particle cohesive force considered as temperature-dependent solid bridge force....