A5100403561- Fluid Dynamics and Heat Transfer
- Lattice Boltzmann Simulation Studies
- Additive Manufacturing and 3D Printing Technologies
- Advanced Measurement and Metrology Techniques
- Advanced machining processes and optimization
- Optical measurement and interference techniques
- Microfluidic and Capillary Electrophoresis Applications
- Advanced Surface Polishing Techniques
- Microfluidic and Bio-sensing Technologies
- Advanced Machining and Optimization Techniques
- Laser Material Processing Techniques
- Electrohydrodynamics and Fluid Dynamics
- Nanomaterials for catalytic reactions
- Railway Engineering and Dynamics
- Combustion and Detonation Processes
- Copper-based nanomaterials and applications
- Image and Object Detection Techniques
- Fluid dynamics and aerodynamics studies
- Electrical Contact Performance and Analysis
- Optical Systems and Laser Technology
- Advanced Combustion Engine Technologies
- Electrowetting and Microfluidic Technologies
- Erosion and Abrasive Machining
- Structural Engineering and Vibration Analysis
- Plasma and Flow Control in Aerodynamics
Guangzhou University
2012-2024
China University of Mining and Technology
2023
Tongji University
2017
In the electrolytic machining of reaction process complex interaction between electric receiving field and flow field, model under different conductive angles heights was established through computer simulation software, profile change diagram surface workpiece in obtained by solving inner cavity dividing positions cavity. The results show that optimization angle can effectively protect non-processing area cavity, selection appropriate height improve processing efficiency.
“Three straight and two flat” is the inevitable demand when realizing intelligent mining of a fully mechanized face. To address crucial technical issue lacking accurate perception shape scraper conveyor during coal mining, three-dimensional curvature sensor involving fiber Bragg grating (FBG) used as perceptive tool to conduct curve reconstruction research based on different local motion frames reconstruct conveyor. Firstly, formation process ‘S’-shaped bending section pushing determined....
Imitating the structure of venous valve and its characteristics passive opening closing with changes in heart pressure, a piezoelectric pump flexible valves (PPFV) was designed. Firstly, working principle PPFV were introduced. Then, valve, main functional component pump, analyzed theoretically. Finally, an experimental prototype manufactured performance tested. The research proves that can achieve smooth transition between valved valveless by only changing driving signal (PZT) vibrator....
Piezoelectric atomization has been applied in the field of respiratory medicine delivery and chemistry. However, wider application this technique is limited by viscosity liquid. High-viscosity liquid great potential for applications aerospace, medicine, solid-state batteries engines, but actual development behind expectations. In study, instead traditional model single-dimensional vibration as a power supply, we propose novel mechanism that uses two coupled vibrations to induce...
Piezoelectric atomization, which breaks liquid into tiny droplets, is widely used in aerospace, medicine, and health. Most research piezoelectric atomizers has increased the atomization amount by improving mechanical structure optimizing vibration characteristics. However, as core component of atomizer to realize using dynamic conical angle effect, micro-tapered hole on atomizing sheet not been deeply studied. To eliminate negative influence uneven burr caused machining process sheet,...
Piezoelectric pumps play an important role in modern medical technology. To improve the flow rate of valveless piezoelectric with tube structures and promote miniaturization integration their designs, a cardioid pump (CFTVPP) is proposed this study. The symmetric dual-bend design CFTVPP holds great potential applications such as fluid mixing heat dissipation systems. structure working principle are analyzed, resistance velocity equations established. Furthermore, characteristics (CFT)...
Microfluidic devices or systems to generate recirculating flow are increasingly utilized in the fields of chemistry, biomedicine, biology, with bottlenecks integration and miniaturization needed a breakthrough. Here, concept for highly integrated valve-less piezoelectric micropump generating (VPMGRF) is proposed, simultaneously realizing innovation theory method. Based on fluid inertiaand energy dissipation vortexes, novel double-loop tube was designed achieve different directions along...
Dynamic mesh atomizers have been widely used in various fields because of their compact structure, low energy consumption, and production costs. The finite element method is an important technique to analyze the factors affecting atomization performance dynamic atomizers. However, at present, there a lack decisive solutions basic problems boundary setting terms simulation vibration displacement characteristics under different modes. In this paper, two errors were found Vibration Analysis...
An angle measurement method based on the rotating spot images and machine vision technology is proposed. This abandons traditional coding disk but uses image sensor to capture of a synchronously with measured shaft. Assuming center rotation shaft fixed, mathematic model trajectory an ellipse. N are used fit ellipse equation, where eccentric angle. The basic algorithms compact lensless transmission structure also simulation experiment results verified feasibility method, 5.4” accuracy can be...
The combustion characteristics of laminar non-premixed CH 4 jet flame in an O 2 /CO coflows with different oxygen mole fractions were studied experimentally. heights at concentrations and fuel velocity obtained. experimental observation shows that the luminosity coflow is from air stream. A two-dimensional numerical study a fraction 0.35 was conducted to analyze effects CO dilution on flame. distribution OH radicals measured experimentally using planar laser-induced fluorescence (PLIF)...
Wankel pump designs have not been fully established, with existing limited to bicornous rotor pumps and triangular pumps. Here, on the basis of geometry, we present a tetragonal three-lobe epicycloid its conjugate envelope as chamber profile. First, design method basic working principle are introduced. Four groups prototypes different shape factors were manufactured, their flow pressure characteristics experimentally studied. Numerical study showed that rate irregularity is lower than...
The Ni-Mo-P amorphous catalysts were prepared by chemical reduction method under different sonication conditions. catalytic performance of the in selective hydrogenation nitrobenzene(NB) to aniline(AN) characterized XRD, BET, N 2 -adsorption, H -TPR and -TPD. results show that introduction ultrasonic can improve dispersion active sites catalyst, particle size catalyst is also smaller than regular catalyst. And influences power time on discussed compared. optimal condition 70 W within 25 min,...
Miniaturization of the device has become key precision measurement system and spot center detection plays a very important role in measuring rotation angle. For imaging problem light source image sensor when coordinate, method using out-of-focus to make smaller was proposed. Firstly, we preprocess image. Then coordinates are obtained by least square circle fitting method, with rotates, will obtain series spot. Lastly, is used fit rotating find axis. Experimental results show that error...
A metal atomizing sheet with a group of micro-tapered holes is the core constituent piezoelectric atomizer. However, diameters large-end and small-end in industrial applications deviate from design values by 15.25% 15.83%, respectively, which adversely impacts effect atomizers. In this study, two main factors that influence machining quality tapered holes, external vibration disturbance internal system errors inside laser processor, were explored; consequently, model device drilling...