A Numerical Study on Axial Pump Performance for Large Cavitation Tunnel Operation
Abstract
:1. Introduction
2. Geometry
3. Numerical Methods
4. Pump Performance
5. Target Head of DLCT
6. Estimation of DLCT Performance
7. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Particulars | Impeller | Stator |
---|---|---|
Diameter (m) | 4.6 (cutting edge 5 mm) | 4.6 |
(P/D) mean | 1.428 | 37.517 |
Ae/A0 | 0.992 | 1.513 |
Nacelle Dia. ratio | 0.450 | 0.450 |
No. of blades | 7 | 9 |
Section | NACA 66 | NACA 66 |
Shaft dia. (m) | 0.8 | - |
Design RPM | 83 at test section speed 15 m/s | - |
Re at 0.7R | 3.5 × 107 | 1.0 × 107 |
Rotating | Counterclockwise | Fixed |
Case | No. of Grid | KT | 10KQ | Selection | |||
---|---|---|---|---|---|---|---|
Rotating Block (Impeller) | Stationary Block | Total | |||||
Stator | Tunnel | ||||||
1 | 3.5 M | 2.0 M | 3.0 M | 8.5 M | 0.7656 | 1.1210 | |
2 | 5.0 M | 3.0 M | 3.0 M | 11.0 M | 0.7649 | 1.1178 | O |
3 | 7.0 M | 4.2 M | 3.0 M | 14.2 M | 0.7650 | 1.1178 |
Particulars | Maximum | General |
---|---|---|
Flow speed in test section () | 15 m/s | 7.5 m/s |
Pump flow speed () | 6.128 m/s | 3.064 m/s |
Flow rate () | 98.76 m3/s | 49.38 m3/s |
Impeller rotating speed (n, rps) | 1.78~1.33 | 0.89~0.67 |
Advanced ratio (J) | 0.75~1.00 | |
Capacity coefficient () | 0.57~0.76 |
Particulars | 15 m/s | 7.5 m/s |
---|---|---|
Target CH | 0.517 | 0.565 |
NS | 1.401 | 1.317 |
RPM | 82.97 | 41.39 |
η | 0.891 | 0.874 |
CQ | 0.734 | 0.735 |
Brake power (kW) | 2387.6 | 326.8 |
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Choi, J.-K.; Kim, H.-T.; Lee, C.-S.; Lee, S.-J. A Numerical Study on Axial Pump Performance for Large Cavitation Tunnel Operation. Processes 2021, 9, 1523. https://0-doi-org.brum.beds.ac.uk/10.3390/pr9091523
Choi J-K, Kim H-T, Lee C-S, Lee S-J. A Numerical Study on Axial Pump Performance for Large Cavitation Tunnel Operation. Processes. 2021; 9(9):1523. https://0-doi-org.brum.beds.ac.uk/10.3390/pr9091523
Chicago/Turabian StyleChoi, Jung-Kyu, Hyoung-Tae Kim, Chang-Sup Lee, and Seung-Jae Lee. 2021. "A Numerical Study on Axial Pump Performance for Large Cavitation Tunnel Operation" Processes 9, no. 9: 1523. https://0-doi-org.brum.beds.ac.uk/10.3390/pr9091523