A5049447801- Cavitation Phenomena in Pumps
- Hydraulic and Pneumatic Systems
- Particle Dynamics in Fluid Flows
- Cyclone Separators and Fluid Dynamics
- Silicone and Siloxane Chemistry
- Turbomachinery Performance and Optimization
- Foreign Body Medical Cases
- Erosion and Abrasive Machining
- Epoxy Resin Curing Processes
- Hydraulic flow and structures
- Heat Transfer Mechanisms
- Rocket and propulsion systems research
- Aerosol Filtration and Electrostatic Precipitation
- Fluid Dynamics Simulations and Interactions
- Adhesion, Friction, and Surface Interactions
- Water Systems and Optimization
- High voltage insulation and dielectric phenomena
- Coal Combustion and Slurry Processing
- Aerodynamics and Acoustics in Jet Flows
- Tracheal and airway disorders
- Advanced Thermodynamic Systems and Engines
- Brake Systems and Friction Analysis
- Fiber-reinforced polymer composites
- Optical measurement and interference techniques
- Polymer Surface Interaction Studies
Jiangsu University
2023-2025
Sichuan University
2021-2024
Nanjing University of Aeronautics and Astronautics
2021
In order to solve the blockage effect and energy dissipation phenomenon caused by cavitation in low-pressure vortex core region, this paper analyzes spatial evolution of vorticity intensity turbulent kinetic under different conditions based on Wray–Agarwal (WA) model. First, tip leakage flow characteristics are studied, is analyzed, then distribution blade region finally, transport analyzed. It found that rate less affected leakage, there a strong interaction between at leading edge trailing...
To study the spatiotemporal evolution process of particle wakes behind impeller in centrifugal pump, this paper utilized high-speed photography to capture motion characteristics under different solid-phase concentrations (1%, 1.5%, and 2%). First, studies changes hydraulic performance pump solid–liquid two-phase flow conditions. It then introduces wake, comparing differences wake varying concentrations. Finally, impact concentration on wear volute's partitions is investigated. This found...
To investigate the energy dissipation mechanisms within pump and improve computational accuracy of solid–liquid flow numerical simulations, in this study, an improved CFD-DEM (Computational Fluid Dynamics - Discrete Element Method) method has been presented. First, is introduced, which mainly considers turbulent particles near-wall region velocity field reconstruction. Then, simulation results before after method's enhancement are compared. Finally, analysis characteristics liquid phase...
To accurately study the effect of particle density on wear characteristics centrifugal pumps, improvements have been made to four-way coupling method. This paper first introduces enhancement strategy for method, focusing turbulence dissipation near wall and reconstruction velocity field. It then investigates pump finally explores interactions between particles. found that as increases, also increases accordingly. Wear primarily occurs pressure side blades, rear cover plate impeller, walls...
To accurately investigate the solid–liquid flow mechanisms within pump, this study employs an improved Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) approach to examine interactions in a centrifugal pump. First, CFD-DEM is introduced, focusing on turbulence dissipation near wall and velocity reconstruction. Then, comparison made between CFD-DEM's performance before after enhancements. Finally, analysis conducted how dynamic characteristics of particles pump vary under...
The rotational speed vectors of the bearing balls affect their service life and running performance. Observing actual ball is a prerequisite for revealing its true motion law conducting sliding behavior simulation analysis. To address need accuracy real-time measurement spin angular velocity, which also under high-frequency high-speed conditions, new method rotation based on binocular vision system proposed. Firstly, marker points are laid balls, three-dimensional (3D) coordinates in camera...
Wide-flow centrifugal pumps are widely used in marine, petrochemical, and thermal power plants because of their good hydraulic performance. To enhance the performance wide-flow thereby reduce energy consumption, this study, an automatic optimization system for rotating machinery based on genetic algorithms was employed. Initially, a detailed description pump model provided. Subsequently, sensitivity analysis key parameters conducted through design experiments (DOEs), identifying primary...
This study presents a comprehensive investigation of the internal noise characteristics mixed-flow pump by combining computational fluid dynamics (CFD) and acoustics. The turbulent flow field is simulated using unsteady SST k-ω turbulence model in CFD. contributions volute, guide vanes, impeller to are analyzed compared Lighthill theory, FW-H formula, LMS Virtual Lab software for acoustic simulation. research findings indicate that energy pressure fluctuations predominantly concentrated at...
Polysiloxane is a typical biomimetic dry adhesive, and polysiloxane-silica interface that widely exists in test systems wall-climbing robots. Studying the glass transition temperature (Tg) of polysiloxane its adhesion properties on silica surface has important theoretical guiding significance practical value for developing applying new generation functional surfaces devices. However, effect type content side groups Tg still unclear. Therefore, three group combinations are included...
<title>Abstract</title> Broncholithiasis is the presence of calcified substances in bronchus, usually accompanied by symptoms that cause severe airway irritation or obstruction<sup>[1]</sup>. Bronchopolithiasis a rare disease most common areas where tuberculosis and histoplasmosis are prevalent. There currently no clear guidelines on treatment options for patients with bronchopolithiasis<sup>[3]</sup>. We treated patient central obstruction due to bronchial calculus tumour growth remarkable...