Optimization of Medical Injection Pump Nozzle Structure Based on CFD
17. März 2025
Über diesen Artikel
Online veröffentlicht: 17. März 2025
Eingereicht: 04. Okt. 2024
Akzeptiert: 31. Jan. 2025
DOI: https://doi.org/10.2478/amns-2025-0838
Schlüsselwörter
© 2025 Chao Xie, published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Water parameters
| Density/(kg/m3) | Surface tension/(N/m) | Viscosity/(Pa·s) |
|---|---|---|
| 998.2 | 0.0719404 | 0.00298 |
Computational mesh parameters
| Mesh | Mesh quantity/10,000 | Mesh orthogonal quality |
|---|---|---|
| (a) Conventional medical injection pump nozzle | 2 | 0.78 |
| (b) Small inclination angle injection pump nozzle | 2.3 | 0.8 |
| (c) Three-stage nozzle structure | 3 | 0.76 |
Boundary conditions of the nozzle model
| Inlet velocity/(m/s) | Turbulence intensity/% | Turbulent viscosity ratio | Initial total pressure/MPa | Contact angle/(°) | Inlet water volume fraction/% |
|---|---|---|---|---|---|
| 0.3mm/s | 2 | 10 | 20 | 70 | 100 |
Comparison of nozzle injection efficiency
| Nozzle type | Nozzle outlet velocity (m/s) | Injection efficiency improvement |
|---|---|---|
| (a) Conventional nozzle | 0.12 | |
| (b) Small flow inclination angle injection pump nozzle | 0.14 | 16.67% |
| (c) Three-stage nozzle structure | 0.18 | 50.00% |