Optimization Research on the Space-V-Type Biomimetic Surface Grooves of a Marine Centrifugal Pump
Abstract
:1. Introduction
2. Response Surface Experimental Design
2.1. Space-V Groove Layout
2.2. Selection of Experimental Factors and Changes in Coding Levels
2.3. Experimental Design
3. Response Surface Optimization Results Analysis
3.1. Analysis of Parameter Significance
3.2. Interaction Effects of Parameters on Total Sound Pressure Level
4. Comparison of Performance of Biomimetic Marine Centrifugal Pump before and after Optimization
4.1. Hydraulic Performance Comparison Analysis
4.2. Analysis of In-Field Noise Comparison
5. Conclusions
- (1)
- The BBD method was used to experimentally design the height, width, and spacing of the biomimetic grooved structure, and a multivariate regression equation was established between the total sound pressure level of the marine centrifugal pump and the three geometric parameters of the grooves. The significance of the model was verified through a variance analysis.
- (2)
- With the increase in groove height, the total sound pressure level first decreases and then increases; with the increase in groove width, the total sound pressure level first decreases and then increases; and with the increase in groove spacing, the total sound pressure level increases.
- (3)
- The optimization scheme for the groove parameters was determined to be height: h = 0.65 mm, width: s = 0.6 mm, spacing: b = 0.8 mm.
- (4)
- The comparative analysis conducted on the Space-V groove model before and after optimization revealed notable improvements in the head and efficiency under various operating conditions. Additionally, the optimized model effectively reduced broadband noise and discrete noise at various characteristic frequencies. Specifically, the optimized Space-V groove model exhibited an increased head of 0.27 m, an increased efficiency of 1.21%, and a drag reduction rate higher than the unoptimized model by 0.87% under the rated condition. Furthermore, in comparison to the smooth model at the rated condition, the optimized Space-V groove model displayed an efficiency improvement of 4.51%, a resistance reduction of 3.73%, and a decrease in the overall sound pressure level by 1.81%.
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Coding | Experimental Factor | Coding Level | ||
---|---|---|---|---|
−1 | 0 | 1 | ||
A | Groove height/mm | 0.2 | 0.6 | 1.0 |
B | Groove width/mm | 0.1 | 0.45 | 0.8 |
C | Groove spacing/mm | 0 | 1.2 | 2.4 |
Number | A | B | C | Total Sound Pressure Level (dB) |
---|---|---|---|---|
1 | 0.2 | 0.1 | 1.2 | 184.13 |
2 | 1 | 0.1 | 1.2 | 182.11 |
3 | 0.2 | 0.8 | 1.2 | 183.12 |
4 | 1 | 0.8 | 1.2 | 182.56 |
5 | 0.2 | 0.45 | 0 | 182.73 |
6 | 1 | 0.45 | 0 | 182.21 |
7 | 0.2 | 0.45 | 2.4 | 183.65 |
8 | 1 | 0.45 | 2.4 | 182.86 |
9 | 0.6 | 0.1 | 0 | 181.56 |
10 | 0.6 | 0.8 | 0 | 182.11 |
11 | 0.6 | 0.1 | 2.4 | 181.98 |
12 | 0.6 | 0.8 | 2.4 | 182.43 |
13 | 0.6 | 0.45 | 1.2 | 181.76 |
14 | 0.6 | 0.45 | 1.2 | 181.70 |
15 | 0.6 | 0.45 | 1.2 | 181.21 |
16 | 0.6 | 0.45 | 1.2 | 180.53 |
17 | 0.6 | 0.45 | 1.2 | 180.37 |
Factor | Sum of Squares | Degrees of Freedom | Mean Square | F-Value | Prob (P) > F | Significance |
---|---|---|---|---|---|---|
Model | 13.34 | 9 | 1.48 | 4.60 | 0.0283 | Significant |
A | 1.89 | 1 | 1.89 | 5.87 | 0.0459 | Significant |
B | 0.024 | 1 | 0.024 | 0.075 | 0.7920 | Not significant |
C | 0.67 | 1 | 0.67 | 2.07 | 0.1935 | Not significant |
AB | 0.53 | 1 | 0.53 | 1.65 | 0.2394 | Not significant |
AC | 0.018 | 1 | 0.018 | 0.057 | 0.8189 | Not significant |
BC | 0.0025 | 1 | 0.0025 | 0.007756 | 0.9323 | Not significant |
A2 | 7.72 | 1 | 7.72 | 23.96 | 0.0018 | Significant |
B2 | 1.10 | 1 | 1.10 | 3.42 | 0.1068 | Not significant |
C2 | 0.65 | 1 | 0.65 | 2.03 | 0.1972 | Not significant |
Q/Qd | Torque/N∙m | Drag Reduction Rate/% | |||
---|---|---|---|---|---|
Smooth Model | Unoptimized Space-V Groove Model | Optimized Space-V Groove Model | Unoptimized Drag Reduction Rate | Optimized Drag Reduction Rate | |
0.6 | 3.19 | 3.24 | 3.20 | −1.56 | −0.31 |
0.8 | 3.45 | 3.41 | 3.38 | 1.16 | 2.03 |
1.0 | 3.85 | 3.74 | 3.71 | 2.86 | 3.73 |
1.2 | 4.31 | 4.27 | 4.23 | 0.93 | 1.86 |
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Li, H.; Yu, Z.; Hua, R.; Li, C.; Guo, C.; Liu, H.; Dong, L. Optimization Research on the Space-V-Type Biomimetic Surface Grooves of a Marine Centrifugal Pump. Water 2023, 15, 4031. https://doi.org/10.3390/w15224031
Li H, Yu Z, Hua R, Li C, Guo C, Liu H, Dong L. Optimization Research on the Space-V-Type Biomimetic Surface Grooves of a Marine Centrifugal Pump. Water. 2023; 15(22):4031. https://doi.org/10.3390/w15224031
Chicago/Turabian StyleLi, Hua, Zifeng Yu, Runan Hua, Chenqi Li, Chao Guo, Houlin Liu, and Liang Dong. 2023. "Optimization Research on the Space-V-Type Biomimetic Surface Grooves of a Marine Centrifugal Pump" Water 15, no. 22: 4031. https://doi.org/10.3390/w15224031