Parameter Design and Optimization of Grass Aerial Seeding Tower Based Computational Fluid Dynamics
Abstract
1. Introduction
2. Structure and Research Methods
2.1. Theoretical Design Basis
2.2. Modeling of the Basic Nozzle Unit
2.3. Overall Scheme Design
2.4. Launch Area Structural Design
2.5. Imposing Constraints on Velocity Outlet Direction
2.6. Physical Modeling and Grid Generation
3. Parameter Design and Optimization of Basic Nozzle Unit
3.1. Evaluation of Outlet Velocity Uniformity
- (1)
- Coefficient of variation
- (2)
- Uniformity Index
3.2. Criteria for Velocity Direction Assessment
3.3. Analysis of Flow Structure
3.4. Structural Optimization Design
4. Conclusions
- (1)
- A noticeable acceleration effect is observed when the airflow passes through the nozzle unit. The airflow speed is smaller away from the outlet, and larger as well as more concentrated near the outlet.
- (2)
- As the inclination angle increases, the velocity field within the nozzle becomes more uneven, with alternating regions of high and low velocity. Turbulence intensity rises, and the overall flow uniformity decreases.
- (3)
- Through analysis and comparison, an inclination angle of 15° is suggested, maintaining good uniformity and directionality of the outlet flow while ensuring sufficient outlet flow velocity.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
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Inclination Angle/° | Outlet Radius/mm | S | /(m·s−1) | CV | ||
---|---|---|---|---|---|---|
11 | 1500 | 3.158 | 4.562 | 0.069 | 0.984 | −0.993 |
13 | 1650 | 5.115 | 5.616 | 0.091 | 0.983 | 0.993 |
15 | 1840 | 8.030 | 6.758 | 0.119 | 0.977 | 0.991 |
17 | 2030 | 17.117 | 8.452 | 0.203 | 0.965 | 0.982 |
19 | 2220 | 43.526 | 10.661 | 0.408 | 0.930 | 0.893 |
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Wang, B.; Zhang, Y. Parameter Design and Optimization of Grass Aerial Seeding Tower Based Computational Fluid Dynamics. Appl. Sci. 2024, 14, 5971. https://doi.org/10.3390/app14145971
Wang B, Zhang Y. Parameter Design and Optimization of Grass Aerial Seeding Tower Based Computational Fluid Dynamics. Applied Sciences. 2024; 14(14):5971. https://doi.org/10.3390/app14145971
Chicago/Turabian StyleWang, Bingjie, and Yingzi Zhang. 2024. "Parameter Design and Optimization of Grass Aerial Seeding Tower Based Computational Fluid Dynamics" Applied Sciences 14, no. 14: 5971. https://doi.org/10.3390/app14145971
APA StyleWang, B., & Zhang, Y. (2024). Parameter Design and Optimization of Grass Aerial Seeding Tower Based Computational Fluid Dynamics. Applied Sciences, 14(14), 5971. https://doi.org/10.3390/app14145971