Hydrodynamic performance of a rim-driven thruster improved with gap geometry adjustment

J Lin, HD Yao, C Wang, Y Su… - Engineering Applications of …, 2023 - Taylor & Francis
The hubless rim-driven thruster (RDT) has become increasingly interesting for ship
propulsion. Gap flow has been proven as the main feature of RDT that cannot be simply …

Shape optimization and hydrodynamic simulation of a Magnus anti-rolling device based on fully parametric modeling

J Lin, HD Yao, Y Han, Y Su, C Zhang - Physics of Fluids, 2023 - pubs.aip.org
Ship anti-rolling devices are an essential component of modern vessels. The core
component of the Magnus effect-based ship anti-rolling device is a rotating cylinder …

Data-efficient deep reinforcement learning with expert demonstration for active flow control

C Zheng, F Xie, T Ji, X Zhang, Y Lu, H Zhou… - Physics of …, 2022 - pubs.aip.org
Deep reinforcement learning (RL) is capable of identifying and modifying strategies for
active flow control. However, the classic active formulation of deep RL requires lengthy …

Effects of roll motion on linear and nonlinear gap resonances in a moonpool excited by various incident-wave heights

P Jing, G He, B Chen, C Zhang, B Ng - Physics of Fluids, 2023 - pubs.aip.org
The linear and nonlinear gap resonances in a free-rolling moonpool are investigated using
a two-dimensional in-house code based on the constrained interpolation profile method …

Hydrodynamic simulation for evaluating Magnus anti-rolling devices with varying angles of attack

J Lin, C Guo, D Zhao, Y Han, Y Su - Ocean Engineering, 2022 - Elsevier
The effective operation of anti-rolling devices is important for ensuring ship safety, comfort,
combat capability, and performance. Stabilizers based on the principle of the Magnus effect …

Modified Magnus effect and vortex modes of rotating cylinder due to interaction with free surface in two-phase flow

J Lin, HD Yao - Physics of Fluids, 2023 - pubs.aip.org
When employing rotating cylinders as ship anti-rolling devices based on the Magnus effect,
the cylinders are near the free surface. However, most of the previous studies on rotating …

Intelligent controller for unmanned surface vehicles by deep reinforcement learning

P Lai, Y Liu, W Zhang, H Xu - Physics of Fluids, 2023 - pubs.aip.org
With the development of the applications of unmanned surface vehicles (USVs), USV
automation technologies are attracting increasing attention. In the industry, through the …

Numerical investigation of the scale effects of pump-jet propulsor with a pre-swirl stator

C Guo, C Yang, C Sun, C Wang, H Yao, J Lin - Physics of Fluids, 2023 - pubs.aip.org
In this study, the performance of a pump-jet propulsor (PJP) with pre-swirl stator in open
water is numerically investigated. Both full-scale and model-scale configurations are …

Real-time prediction of ship motion based on improved empirical mode composition and dynamic residual neural network

N Gao, Z Chuang, A Hu - Ocean Engineering, 2024 - Elsevier
Ship motion attitude data have strong random and non-stationary characteristics under
severe sea states. Real-time and accurate prediction of the ship's motion attitude can …

Influence of jet flow on hydrodynamic performance of a ducted propeller

C Guo, C Yang, C Sun, C Wang, HD Yao, J Lin - Physics of Fluids, 2023 - pubs.aip.org
This study introduces a concept that jet technology in the aeronautical field is used for active
flow control to improve the hydrodynamic performance of a ducted propeller. Jet flow is …