New method for predicting full-scale power performance of pumpjet propulsion system based on statistical learning

V_s /kn	换算方法1				换算方法2（强制力修正）
V_s /kn	N/(r·min⁻¹)	T/kN	P/kW	t	N/(r·min⁻¹)	T/kN	P/kW	t
18	0.543N₀	0.251T₀	0.157P₀	−0.046 1	0.543N₀+0.25	0.251T₀−5.78	0.157P₀+22.80	−0.069 8
20	0.611N₀	0.324T₀	0.225P₀	−0.040 9	0.611N₀−0.36	0.324T₀+3.57	0.225P₀−104.00	−0.03
22	0.685N₀	0.421T₀	0.318P₀	−0.032 1	0.685N₀−0.13	0.421T₀−9.49	0.318P₀−78.95	−0.054 9
24	0.750N₀	0.513T₀	0.419P₀	−0.008 2	0.750N₀−0.15	0.513T₀−12.34	0.419P₀−85.50	−0.032 1
26	0.814N₀	0.615T₀	0.538P₀	0.007 1	0.814N₀−0.26	0.615T₀−13.62	0.538P₀−152.55	−0.014 5
28	0.896N₀	0.766T₀	0.716P₀	0.006 1	0.896N₀−0.11	0.766T₀−12.85	0.716P₀−35.90	−0.010 2
30	N₀	T₀	P₀	0.015 7	N₀−0.54	T₀−23.77	P₀−346.05	−0.007 4

Table 2. Propulsion performances of full scale pumpjet propulsion system from matching of ship to pumpjet
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Table 2. Propulsion performances of full scale pumpjet propulsion system from matching of ship to pumpjet
V_s /kn J N/(r·min⁻¹) T/kN P/MW T_cav/kN
30 1.72 125.2 1012.12 26.71 4078.81
30 1.72 126 1025.23 27.23 4078.81

Table 3. Prediction and verification of pumpjet propulsion system performances on full scale ship

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Table 3. Prediction and verification of pumpjet propulsion system performances on full scale ship

V_S /kn	N/(r·min^-1)	N的偏差/%	T/kN	T的偏差/%	P/MW	P的偏差/%	总推进效率
30	0.985 N₀	−1.464	1.001 T₀	0.132	0.995 P₀	−0.534	0.573
28	0.875 N₀	−2.343	0.770 T₀	0.557	0.696 P₀	−2.803	0.588
26	0.792 N₀	−2.711	0.597 T₀	−2.913	0.517 P₀	−3.776	0.569
24	0.732 N₀	−2.386	0.529 T₀	3.168	0.408 P₀	−2.581	0.591
22	0.667 N₀	−2.646	0.437 T₀	3.689	0.308 P₀	−3.008	0.591
20	0.595 N₀	−2.637	0.341 T₀	5.380	0.219 P₀	−2.652	0.592
18	0.524 N₀	−3.512	0.258 T₀	3.034	0.149 P₀	−5.244	0.592

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Qiongfang YANG, Rui WU, Minmin ZHENG, Xuequan MA, Heng LIU, Yilin YANG. New method for predicting full-scale power performance of pumpjet propulsion system based on statistical learning[J]. Chinese Journal of Ship Research, 2022, 17(6): 70

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Paper Information

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Received: Nov. 21, 2021

Accepted: --

Published Online: Mar. 26, 2025

The Author Email:

DOI:10.19693/j.issn.1673-3185.02600

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Propulsion performances of full scale pumpjet propulsion system behind ship from model self-propulsion test

Table 1. Propulsion performances of full scale pumpjet propulsion system behind ship from model self-propulsion test

Table 2. Propulsion performances of full scale pumpjet propulsion system from matching of ship to pumpjet

Table 2. Propulsion performances of full scale pumpjet propulsion system from matching of ship to pumpjet

Table 3. Prediction and verification of pumpjet propulsion system performances on full scale ship

Table 3. Prediction and verification of pumpjet propulsion system performances on full scale ship