A5039865900- Fluid Dynamics and Mixing
- Nuclear Engineering Thermal-Hydraulics
- Fluid Dynamics and Turbulent Flows
- Cyclone Separators and Fluid Dynamics
- Particle Dynamics in Fluid Flows
- Computational Fluid Dynamics and Aerodynamics
- Minerals Flotation and Separation Techniques
- Fluid Dynamics and Heat Transfer
- Heat Transfer and Boiling Studies
- Aerodynamics and Acoustics in Jet Flows
- Innovative Microfluidic and Catalytic Techniques Innovation
- Advanced Condensed Matter Physics
- Cavitation Phenomena in Pumps
- Hydraulic and Pneumatic Systems
- Nuclear Materials and Properties
- ZnO doping and properties
- Advanced Chemical Sensor Technologies
- Magnetic and transport properties of perovskites and related materials
- Lattice Boltzmann Simulation Studies
- Metallurgical Processes and Thermodynamics
- Nuclear reactor physics and engineering
- Drilling and Well Engineering
- Image and Object Detection Techniques
- Advanced Data Compression Techniques
- Speech and Audio Processing
Shanghai Jiao Tong University
2017-2024
University of Electronic Science and Technology of China
2008-2013
National Chung Shan Institute of Science and Technology
2011
Abstract An improved shadow-based imaging method combined with a ray-tracing algorithm is proposed for three-dimensional (3D) reconstruction of bubble mesostructures. The 3D micro-scale interface measurement bubbles categorized as transparent objects challenging at the forefront research in field multiphase flows. In study, developed using single high-speed camera under small-angle diffused backlight source based on Helmholtz reciprocity, Gaussian optics, and Snell's law. accuracy assessed...
We have demonstrated that the bound magnetic polaron model is responsible for ferromagnetism in Co–ZnO semiconductors, where carriers are provided by interstitial zinc (Zn i ). Our experiment unique since changing temperature, we able to cross carrier concentration threshold above which a long-range ferromagnetic order established. Consequently, observed at room temperature but weakened temperatures below 100 K. To support our conclusion performed systematic investigation on structural, and...
The creation and control of homogeneous isotropic turbulence in laboratory settings is practical significance. In this paper, we propose a novel design for generation apparatus driven by two pairs oscillating grids, with the object striking balance between stochastics momentum injection flexibility turbulent kinematic energy (TKE). To validate performance system, tomographic particle image velocimetry measurements are conducted. Based on Reynolds decomposition, characterize secondary flow...
Non-uniform inflow at the inlet of a reactor coolant pump generates performance variations, such as in head, efficiency, cavitation, and vibrations. The three-dimensional velocity pressure for non-uniform are reconstructed via time-resolved tomographic particle image velocimetry to evaluate its effect on pump. Five volume fields were through multiplicative algebraic reconstruction technique, which constitutes entire flow field. statistics used study characteristics. contains two large-scale...
Venturi tube is based on turbulent flow, whereby the microbubbles can be generated by fragmentation. This phenomenon common in several venturi bubblers used nuclear, aerospace and chemical industries. The first objective of this paper to study liquid-phase velocity field experimentally develop correlations for quantities. second research characteristics theoretically. Stereoscopic PIV measurements have been analyzed utilized kinetic energy tube. tracking properties tracer particles verified...
The electronic structure and magnetic properties of Co-doped CeO(2) are theoretically investigated by first principles calculations based on the density functional theory + U (DFT+U) methods, using WIEN2k package. With presence oxygen vacancies (V(O)) in CeO(2), d f orbits Ce obviously pulled closer to Fermi level, but without spin polarization. On other hand, V(O) defects can lead strong ferromagnetic coupling between nearest neighboring Co ions. Such exchange is mainly attributed splitting...
The gas-liquid separator is a key component in the gas removal system of Thorium Molten Salt Reactor. Phase separation driven by swirling flow, and fundamental principle that dispersed bubbles are accumulated coalesced into an air core to realize from liquid phase. In this paper, simultaneous particle image velocimetry (PIV) pulsed shadowgraphy techniques applied characterize two-phase-flow patterns evolutionary process core. PIV technique utilizes fluorescent particles as tracers flow...
The mechanism of turbulence modulation by bubbles is crucial for understanding and predicting turbulent bubbly flow. In this study, we conducted an experimental investigation different sizes in homogeneous isotropic using two-phase stereo-particle image velocimetry measurement techniques. Two bubble generation methods, electrolysis porous medium, were employed to generate micrometer millimeter sizes, respectively. oscillating grid system was utilized turbulence, allowing precise control...
Taylor–Couette flow with a high Taylor number and large radius ratio is widely present in fluid machinery, such as the internal clearance canned motor pump typically. ratios from 0.934 to 0.977 107 1010 was investigated by numerical simulations. The results indicated that torque positively correlated ratio, while dimensionless exponentially related number. Subsequently, physical characteristics of field were described extracting statistical quantities average azimuthal velocity profile,...
The Venturi-type bubble generator proposed by Oak Ridge National Laboratory is used to produce micro-sized bubbles. In this paper, a numerical simulation carried out study the process of formation and detachment from wall orifice in cross-flowing liquid. Volume-of-Fluid (VOF) method applied track two-phase interface evolution formation. result computation provides visual three-dimensional shows detachment. Three stages are identified during (the expansion stage, rising collapse stage)....
For a pressurized water reactor power plant, the coolant pump (RCP) is kernel component. And for canned motor RCP, rotor system's properties determines its safety. The liquid inside RCP fills clearance between metal shields of and stator, forming lengthy flow. influence inlet preswirl on rotordynamic coefficients flow in their effects characteristics are numerically experimentally investigated this work. A quasi-steady state computational fluid dynamics (CFD) method has been used to...