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About Journal
Founded in 1979, Monthly
Governed by:
China State Shipbuilding Corporation Limited (CSSC)
Sponsored by:
Shanghai Marine Equipment Research Institute (SMERI), Chinese Society of Naval Architects and Marine Engineers (CSNAME)
Published by:
Editorial Office of Ship Engineering
Email: cbgc@cssmc.cn
ISSN 1000-6982
CN 31-1281/U
Issue 3 ,2026
Ship navigation environment perception and risk warning system based on modal information fusion
Ship engine condition monitoring and fault diagnosis based on big data
Research Status and Prospect of Collision Avoidance Capability and Reliability Testing for Maritime Autonomous Surface Vessels
Research on Adaptive Control for Automatic Ship Berthing Based on Physics-Informed Neural Networks
Numerical Simulation on the Effect of Central Body Position on the Flow in Cavitating Nozzles
more..Two-Stage Optimal Design of Pump-Jet Propulsor Based on CFD Analysis
WU Haiyan;YU Long;WANG Youjiang;[Purpose] To address the multi-objective optimization problem of pump-jet propellers, [Method] a two-stage optimization approach has been proposed. In the first stage, the Reynolds Averaged Navier Stokes(RANS) numerical simulation method and the Non-dominated Sorting Genetic Algorithm II(NSGA-II) are employed to achieve multi-objective optimization of thrust, efficiency, and intial cavitation performance. In the second stage, the RANS equations combined with the Ffowcs Williams-Hawkings(FW-H) acoustic analogy method are used to evaluate the noise performance of the preferred solutions. A B-spline-based parametric model is established to optimize key geometric parameters such as pitch and camber. [Result] The results demonstrate that the efficiency-oriented solution(case1) achieves a 2.68% improvement in efficiency and a 4.227 dB reduction in total sound pressure level. The balanced solution(case2) optimizes initial cavitation performance while also improving efficiency(0.57%) and noise reduction(1.756 dB). [Conclusion] The method realizes the collaborative multi-objective optimization of pump-jet propellers, providing an effective reference for engineering design.
Influence of Structural Parameters of Straight-Wing Propeller on Hydrodynamic Characteristics Based on CFD
WEN Xiaofei;HU Changlong;HUANG Jialin;XIAO Weiqi;[Purpose] Addressing the current research gap in structural parameter selection and performance optimization for straight-bladed rudder propellers, [Method] computational fluid dynamics Computational Fluid Dynamics(CFD) based numerical simulation is employed to conduct systematic hydrodynamic performance analysis on the FSDJ-400 RE-C model. By comparing simulation results with experimental data across different operating conditions(J=0～2.4), the accuracy of the constructed model is validated, with an efficiency deviation of only 6.628 5% at J=2.0. Based on this, J=2.0 is selected as the representative operating condition. Comparative analyses are conducted on the pressure field, velocity field, and hydrodynamic characteristic curves for key structural parameters including blade length, chord length, and thickness. Furthermore, parametric combination simulations are performed to optimize hydrodynamic performance under single-parameter conditions. [Result] The results indicate that optimal hydrodynamic performance under single-parameter conditions is achieved when the blade length is 1 260 mm, chord length is 510 mm, and thickness is 60 mm. However, the optimal parameter combination is not simply the sum of the optimal individual parameters. Using blade length L as the reference, the hydrodynamic characteristics of the straight-wing rudder propeller reached their optimal state when the chord ratio C/L=0.405 and the thickness ratio T/C=0.118. [Conclusion] It provides effective support for hydrodynamic performance prediction, blade mechanism design, and optimization of straight-wing rudder propellers.
Research Progress and Prospects of Ship Intelligent Energy Efficiency Management System
YIN Qizhi;HUANG Jiaqi;HU Haofan;SU Kaiwen;XU Chaofan;OUYANG Wu;[Purpose] In order to investigate the current status and development trends of domestic and international research on intelligent energy efficiency management systems for ships, [Method] research advances and practical applications in key technologies such as energy efficiency data acquisition, cleaning, analysis, and modeling are comprehensively reviewed. It also compares the functionalities and characteristics of typical intelligent ship energy efficiency management systems both domestically and internationally. [Result] The results indicate that intelligent ship energy efficiency management technology has formed a complete chain from data perception to optimization decision-making, with system functions evolving from monitoring to analysis, evaluation, and optimization. Systems in different regions exhibit distinct features, such as dynamic optimization for oceangoing vessels, multi-terminal coordination for inland waterways, and energy efficiency evaluation, and have demonstrated energy-saving and efficiency-improving effects in practical ship operations. [Conclusion] Future intelligent ship energy efficiency management systems will develop towards a "ship-cloud-shore" collaborative architecture. Key breakthroughs are needed in multi-source information fusion, mechanism-data hybrid modeling, digital twin, and other critical technologies to establish an open and shared energy efficiency data ecosystem, enabling autonomous and intelligent energy efficiency enhancement across entire fleets and voyages.
Influence of Longitudinal Center of Gravity Position on the Resistance of a Small Battery-Powered Ship Based on STAR-CCM+
ZHANG Rongjun;XU Yiqun;WANG Yinfei;LI Zhenxing;LIN Rongmo;CHEN Xiaoxi;[Purpose] To investigate the influence of the longitudinal center of gravity position on the resistance of small battery-powered ships, [Method] a 4.98 m battery-powered fishing boat is selected as the research object. The commercial computational fluid dynamics(CFD) software STAR-CCM+ is used to numerically simulate the ship's resistance. The Reynolds Averaged Navier-Stokes(RANS) equations are employed as the governing equations, and the Realizable ∂ρ/∂t+∂(ρui)/∂xi=0 turbulence model is adopted for turbulence closure. A mesh independence analysis is carried out, and the numerical results are validated using the empirical formula for frictional resistance coefficient provided by the International Towing Tank Conference in 1957(ITTC-1957). Comparative simulations are conducted for different longitudinal center of gravity positions. [Result] The results show that as the longitudinal center of gravity moves forward, the viscous(shear) resistance gradually increases, the pressure resistance first decreases and then increases, and the total resistance exhibits a similar trend of initial reduction followed by an increase. When the longitudinal center of gravity is located at 2.05 m, the trim angle reaches 0.958°, and the total resistance achieves a minimum value of 729.305 N, representing a 28.87% reduction compared to the maximum resistance. [Conclusion] By reasonably arranging the longitudinal center of gravity position, the optimal trim angle at the design speed can be achieved, thus effectively reducing the navigation resistance of small battery-powered vessels.
Numerical Simulation of Drag Characteristics for Flow Past a Circular Cylinder at Various Reynolds Numbers
WU Hao;LIAN Zixiang;LI Jindi;AN Zhongchang;[Purpose] To solve the problem of unclear calculation methods in the optimization design of ship resistance, [Method] the characteristics of the flow field and resistance around blunt bodies are studied. Using STAR-CCM+ computational fluid dynamics(CFD) software, numerical simulations of flow past a circular cylinder at Reynolds numbers of 3 900, 10 000, and 20 000 are performed. Through comparative analysis of Reynolds Averaged Navier Stokes(RANS)-based simulations employing both Shear Stress Transfer(SST) k-ω and standard k-ε turbulence models, the capabilities in predicting bluff body flow resistance is evaluated. [Result] The findings demonstrate that the SST k-ω model achieves remarkable agreement with Direct Numerical Simulation(DNS) reference data across all tested Reynolds numbers, while the standard k-ε model shows significant discrepancies. [Conclusion] The SST k-ω turbulence model can obtain highly confident numerical simulation results of the flow resistance characteristics around blunt bodies.
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