A5057001704- Combustion and flame dynamics
- Advanced Combustion Engine Technologies
- Fluid Dynamics and Heat Transfer
- Aerosol Filtration and Electrostatic Precipitation
- Plasma and Flow Control in Aerodynamics
- Plant Surface Properties and Treatments
- Tribology and Lubrication Engineering
- Rocket and propulsion systems research
- Nuclear reactor physics and engineering
- Heat transfer and supercritical fluids
- Cyclone Separators and Fluid Dynamics
- Electrohydrodynamics and Fluid Dynamics
- Advanced X-ray Imaging Techniques
- Laser-Plasma Interactions and Diagnostics
- Fluid Dynamics and Turbulent Flows
- Engineering Applied Research
- Aerodynamics and Fluid Dynamics Research
Tongji University
2018-2023
Nozzle geometry features directly govern the nozzle internal flow which significantly affects spray atomization, as well in-cylinder combustion and fuel economy. In this study, transient was visualized through X-ray phase-contrast imaging technology. The experimental results indicated that sac-orifice relative positions structural asymmetry of orifice prominently influence in-nozzle cavitation strength distribution. Some with general applicability such wall inclination angles, inlet included...
Feedback-free fluidic oscillators, relying on the interaction of jets to oscillate, have a wide range operation frequencies and no moving parts, which is promising for future applications. In this paper, sweep angle, oscillation frequency, volume flow rate feedback-free oscillator with cavity width 4.6 mm were measured experimentally, sweeping mechanism was analyzed based internal simulation. The influence impact exit width, shoulder radius external spray characteristics by numerical method....
The flow and cavitation phenomena inside the nozzle sac play an important role in fuel atomization process, especially at end of injection, which may cause high-temperature gas ingestion consequently leading to coke formation orifice. It is great difficulty reveal morphology nozzles during injection process since enclosed by a thick steel wall whole takes place few microseconds. Therefore, dedicated synchrotron radiation X-ray phase contrast imaging technology was developed optimizing...
An open atomization test bench based on high-speed Schlieren technology and a Malvern particle size analyzer was developed to investigate the effects of different injection pressures (0.12 MPa 0.24 MPa) spray characteristics an internal oscillating nozzle, including spatial distribution flow rate, oscillation frequency, cone angle, size, velocity. A numerical investigation that simultaneously considered field external within same computational performed reveal mechanism. The experimental...
The impinging nozzle is widely used in the vehicle cleaning system because of unique advantages spray dispersion and fine droplet generation.The internal structures can influence flow pattern, which consequently determines characteristics.In this paper, a numerical model simulating field external was proposed to study on characteristics.The verified by experimental results including different sweep angles, frequencies, total rates under pressures.As impact angle increased from 80 degrees 120...