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Performance comparison between the conventional and blade-designed two-fluid pressure nozzles via CFD simulation
Che-Hao Hsu1, Hong-Ping Cheng1, Yu-Cheng Chou1
1Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei, Taiwan, 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, ROC.
Heliyon
|February 21, 2025
Summary
A novel blade-designed nozzle enhances gas-liquid interaction for superior spray performance compared to conventional twin-fluid nozzles. This improved atomization and velocity distribution benefit industrial spray applications.
Area of Science:
- Fluid Dynamics
- Spray Technology
- Mechanical Engineering
Background:
- Optimizing gas-liquid interaction is crucial for efficient atomization in industrial spray processes.
- Conventional twin-fluid nozzles face limitations in controlling flow dynamics and achieving uniform spray patterns.
Purpose of the Study:
- To compare the performance of a blade-designed nozzle against a conventional pressure twin-fluid nozzle.
- To investigate how nozzle design influences gas-liquid interaction, velocity distribution, and atomization behavior.
Main Methods:
- Computational fluid dynamics (CFD) simulations were employed.
- Two nozzle designs (conventional and blade-designed) were analyzed.
- Simulations used water and a glycerol/water mixture at 2 bar pressure, with air velocities of 60 m/s and 100 m/s.
Main Results:
- The blade-designed nozzle demonstrated superior gas-liquid interaction due to its dispersed-blade outlet.
- This design effectively reduced velocity stratification and enhanced mixing near the nozzle exit.
- A broader atomization range and more uniform velocity distribution were observed with the blade-designed nozzle.
Conclusions:
- The blade-designed nozzle offers significant advantages over conventional designs for industrial spray applications.
- Its ability to improve gas-liquid interaction and spray uniformity makes it highly suitable for efficient and consistent coverage.
- Further research can explore its application in diverse industrial settings requiring advanced atomization.
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