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

Qiongfang YANG; Rui WU; Minmin ZHENG; Xuequan MA; Heng LIU; Yilin YANG

doi:10.19693/j.issn.1673-3185.02600

Journals >Chinese Journal of Ship Research >Volume 17 >Issue 6 >Page 70 > Article

Chinese Journal of Ship Research
Vol. 17, Issue 6, 70 (2022)

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

Qiongfang YANG¹, Rui WU², Minmin ZHENG², Xuequan MA²..., Heng LIU² and Yilin YANG²|Show fewer author(s)

Author Affiliations

¹College of Power Engineering, Naval University of Engineering, Wuhan 430033, China

²Shanghai Ship and Shipping Research Institute Co., Ltd., Shanghai 200137, China

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DOI: 10.19693/j.issn.1673-3185.02600 Cite this Article

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 Copy Citation Text

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

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

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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

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

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