CFD-BASED HYDRODYNAMIC ANALYSIS FOR A SHIP SAILING ALONG A BANK IN RESTRICTED WATERS

For a ship navigating along a bank in restricted waters, it is usually accompanied by obvious bank effect which may cause ship-bank collision. In order to avoid collision, it is necessary to provide control force and moment by using control devices such as a rudder. In this paper, CFD method is applied to numerically simulate the viscous flow around a ship appended with a rudder sailing along a bank. Systematical simulations are carried out for the hull-rudder system with different rudder angles at different ship-bank distances and water depths. The flow field features and the hydrodynamic forces of the hull-rudder system are obtained and analysed. This study is of significance for revealing the physical mechanism behind the bank effect and providing guidance for ship steering and control in restricted waters.

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The Hydrodynamic Analysis of Propeller Based on ANSYS-CFX

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.694-697.673 ◽

2013 ◽

Vol 694-697 ◽

pp. 673-677 ◽

Cited By ~ 1

Author(s):

Da Zheng Wang ◽

Dan Wang ◽

Lei Mei ◽

Wei Chao Shi

Keyword(s):

Turbulence Models ◽

Open Water ◽

Blade Surface ◽

Hydrodynamic Analysis ◽

Pressure Distributions ◽

Ansys Cfx ◽

Computational Fluid Dynamics Cfd ◽

Open Water Performance ◽

Cfd Method ◽

Thrust And Torque

In this paper, the open water performance of a pod propeller in the viscous flow fields is numerically simulated by the Computational Fluid Dynamics (CFD) method. Based on the coordinate transformation formula for transforming the local to the global coordinate, mathematical model of a propeller is created. Thrust and torque coefficients corresponding to different advance coefficients of the model are calculated by ANSYS-CFX with three different turbulence models. The pressure distributions on the blade surface are also presented. Comparisons show that experimental results and numerical results agree well, with SST k-ω and RNG k-ε more accurate than the standard k-ε.

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ANALYSIS OF THE EXISTING NUMERICAL METHODS FOR MODELING THE INTERACTION OF THE WORKING BODIES OF DIGGING AND SOIL-PROCESSING MACHINES WITH SOIL MEDIA

Voronezh Scientific-Technical Bulletin ◽

10.34220/2311-8873-2020-3-3-128-139 ◽

2020 ◽

Vol 3 (3) ◽

pp. 128-139

Author(s):

Maksim Gnusov ◽

Mihail Lisich

Keyword(s):

Numerical Methods ◽

Software Products ◽

Modern Computer ◽

Particle Hydrodynamics ◽

Soil Media ◽

Computational Fluid Dynamics Cfd ◽

Working Bodies ◽

Cfd Method ◽

The Cost ◽

Element Method

Carrying out theoretical studies of the working processes of various machines and units today has ample opportunities when using modern computer technologies. The use of programs greatly speeds up the study of complex systems under study. The use of simulation methods is advisable when the cost of carrying out real experimental research is high or, due to certain circumstances, making research on a real system impossible, and the calculation of the analytical model will allow many assumptions and approximations that will affect the entire system and change it. In the article, special attention is paid to the selection of the most suitable modeling method for studying the process, liquidation of a forest fire with a flow of soil, using serial software products. The analysis of existing numerical methods for modeling the interaction of working bodies of earth-moving and tillage machines with soil media is carried out. The studies performed by the discrete element method (DEM), the finite element method (FEM), the computational fluid dynamics (CFD) method, and the smooth particle hydrodynamics (SPH) method are analyzed. Conclusions are drawn on the prospects for the applicability of each of the methods for modeling the system of processes of processing and throwing soil.

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