A5100664516- Cavitation Phenomena in Pumps
- Metallurgy and Material Forming
- Smart Grid Energy Management
- Industrial Automation and Control Systems
- Hydraulic and Pneumatic Systems
- Aerodynamics and Fluid Dynamics Research
- Metal Forming Simulation Techniques
- Turbomachinery Performance and Optimization
- Heat Transfer Mechanisms
- Electrohydrodynamics and Fluid Dynamics
- Fluid Dynamics and Turbulent Flows
- Smart Grid Security and Resilience
- Oil and Gas Production Techniques
- Aerospace Engineering and Energy Systems
- Biomimetic flight and propulsion mechanisms
- Nanomaterials and Printing Technologies
- IoT-based Smart Home Systems
- Wind and Air Flow Studies
- Advanced Combustion Engine Technologies
- Drilling and Well Engineering
- Vibration and Dynamic Analysis
- Sensorless Control of Electric Motors
- Plasma Diagnostics and Applications
- Computational Fluid Dynamics and Aerodynamics
- Wind Energy Research and Development
Shanghai Dianji University
2022-2024
Shandong University of Science and Technology
2023
Wuhan University of Science and Technology
2007-2021
Cavitation is common in traditional torque converters whose blades are designed by beam theory; the blade curvature discontinuous and cannot be analysed functions. In this paper, YJH265 converter used as prototype to reconstruct stator with Joukowsky airfoil transformation. Computational Fluid Dynamics (CFD) analyse flow field three-dimensional transient full channel. Combined experiments, cavitation found at exit of stator. This same position different studied other scholars, state...
To understand the effect of internal leakage on torque field and characteristics a converter (TC), transient analysis was performed flow TC pressure pulsation monitoring points in convection channel. It found that dividing area into separate watershed improved simulation accuracy by 4%. When there area, were distinct collision, mixing, assimilation stages between main flow. These phenomena caused energy loss highest at low speed ratios. However, always accounted for 12% regardless ratio. At...
In order to ensure the blade strength of large-scale wind turbine, blunt trailing edge airfoil structure is proposed, aiming at assessing impact shape on flow characteristics and performance. this paper, a Joukowsky modified by adding tail thickness parameter K achieve purpose accurately modifying airfoil. Using Ansys Fluent as tool, large eddy simulation (LES) model was used analyze vortex edge. The attack angles were variables aerodynamic performance airfoils with different K-values. It...
Flow separation is ubiquitous in turbomachinery. Compared with the more mature turbomachinery flow control method where medium gas, liquid cannot be controlled well. In this study, according to principle of aircraft fowler flap, taking stator blade hydraulic torque converter as basic research object, shape fitted Joukowsky transformation, and then it slotted. Computational fluid dynamics used perform analysis on original blades slotted blades. It found that compared blade, blade’s phenomenon...
Aiming at the characteristics of traditional electric spring (ES) to stabilize voltage critical load (CL), with switchable smart (SSL) is studied. The basic principle ES SSL discussed, a control strategy proposed use one PR controller different loads respectively by using indirect method. parameters are deduced method root locus, stability analyzed state space modeling, and Matlab used compare analyze system when stabilizing voltages R/X ratio line impedance different. results show that...
In response to the problem of high cogging torque in Interior Permanent Magnet Synchronous Motors (IPMSM), this paper first conducted a theoretical analysis torque, and then established finite element model 8-pole 48-slot IPMSM. The influence opening auxiliary slots on motor stator rotor was compared analyzed. Finally, output air gap magnetic density, density harmonics, no-load back electromotive force harmonics before after slot were results show that simultaneously can effectively reduce...
Abstract To understand the effect of number torque converter blades on performance converters, in this paper, we employed computational fluid dynamics and response surface method to optimize design converter. The pump blades, stator turbine were used as variables, transmission ratio capacity factor objective functions for multi-factor optimization design. results show that had no significant impact converter’s performance, while showed strong correlation. Compared with original converter,...
With the help of instantaneous power theory and Matlab/Simulink simulation tools, principle electrical spring (ES) steady-state operation modes division was analyzed, changes ES in different were studied, then equivalence circuit under operating conditions deduced, problem that how mode switches to stabilizes critical load voltage with working analyzed. Simulation experiments verify correctness research results.
In order to improve the hydrodynamic performance of hydrofoils, this paper shows excellent according flapping motion fish through tail fin. The Naca66 hydrofoil is used as original and trailing edge flap configuration added. Ansys-fluent analyze relationship between structural parameters (length angle) hydrofoil, reliability CFD numerical simulation verified by PIV experiment. It found that with clockwise rotating short flap, can significantly a at small angle attack; high attack,...
Printhead with microscale nozzle is very important for electrohydrodynamic jet (E-jet) printing, that decides output performance of system. It challenge and necessary to design fabricate a protruding Si-based strucure E-jet prining. In this paper, structure designed the corresponding fabricating flow chart introduced based on photolithography, wet etching, magnetron sputtering, inductively coupled plasma. Then, effect etching ratio between big area small section analyzed discussed in...
Based on continuous adjustment of the underground inclination correction force in a pulse width modulation AADDS (Automaic Anti-Deviation Drilling System) automatic vertical drilling tool to address problems such as induced significant fluctuation and instable relative orientation well's inclination, optimization control this is investigated. Two-position two-way electromagnetic valves hydraulic system undergo multiple on/off controls (i.e., multi-pulse modulation) drill rod rotational cycle...