The hydrodynamic flow around a yacht keel based on LES and DES

Mylonas, Dimitrios; Sayer, P.

doi:10.1016/j.oceaneng.2012.02.001

Cited by 17 publications

(9 citation statements)

References 27 publications

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“…Parolini et al (2005) [2] made a research on the America's cup sailing ship of different states by solving the Reynolds-averaged Navier-Stokes equations, and the result of this research made a contribution for the winner of Alinghi Team in the America's cup. Mylonas et al (2012) [3] made a research on the hydrodynamic performance of the America's cup sailing ship, which showed that simulated result of the Large Eddy Simulation method and the Detached Eddy Simulation method is smaller than the test results, it can more accurately simulate the near wall flow by using the LES model. Viola et al (2014) [4] conducted a test of the optimal location of athletes on Aura 1:4 model in the towing tank.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Rudder Hydrodynamics for 470 Class Yacht

Lin

Zheng

et al. 2018

The 12th Conference of the International Sports Engineering Association

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The rudder is an important appendage and used to adjust the course and balance the lateral displacement in the sailing regatta. RANSE (Reynolds-averaged Navier-Stokes Equations) was used to simulate the viscous flow field of the hull for 470 Class yacht based on CFD (Computational Fluid Dynamics). It is found that the stall angle was 30 degrees when the displacement is 280 kg and the boat speed is 2 m/s to 8 m/s. If the speed increases, the wake flow of the hull will influence the valid area of the rudder and span-chord ratio and the stall angle will be 35 degrees at the speed of 10 m/s. The lift-drag ratio will increase when the rudder angle is from 10 degrees to 25 degrees. The results would provide a theoretical reference for athletes to manipulate the sailboat.

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Section: Introductionmentioning

confidence: 99%

Investigation on Rudder Hydrodynamics for 470 Class Yacht

Lin

Zheng

et al. 2018

The 12th Conference of the International Sports Engineering Association

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“…Parolini et al (2005) [1] made a research on the "America's cup" sailing ship of different states by solving the Reynolds-averaged Navier-Stokes (RANS) equations and the result of this research made a contribution for the title of alinghi in the America's cup. Mylonas et al (2012) [6] made a research on the hydrodynamic performance of the America's cup sailing ship, which showed that simulated result of the large eddy simulation (LES) method and the detached eddy simulation method is smaller than the test results, which can more accurately simulate the near wall flow by using the LES model. Viola et al (2014) [2] conducted a test of the optimal location of athletes from the stern on the ship model of 1:4 by the dragging pool at China in recent years.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Hull Hydrodynamics with Different Draughts for 470 Class Yacht

Lin

et al. 2018

The 12th Conference of the International Sports Engineering Association

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Class 470 yacht attracts more and more attention at the World Championships. The hull hydrodynamics is important for winning the games. Hull draughts influence ship maneuverability, seakeeping, rapidity and stability. Numerical simulation by solving RANS equations is used to hull hydrodynamics with different draughts for the 470 Class yacht. Turbulence model is (SST) k-ω. The results show that wave resistance, viscous pressure resistance, friction resistance with the Froude number is different when the hull draught is different. According to the results about hull hydrodynamics with different draughts and the aerodynamics of the sail wing, the resistance performance of the hull is good when the hull draft for 470 Class yacht is within a relatively reasonable zone. This study on resistance performance of the hull provides a theoretical reference for coaches to talent selection of sailing athletes, weight distribution of athletes, estimate the sailing route and maneuverability of the sailing boat.

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“…After compared to a classical simulation the author obtained that, these two method numerical solutions can up to four times faster. Mylonas and Sayer predicted the forces acting on a yacht keel based on the large-eddy simulation (LES) and detached-eddy simulation (DES) solutions [11] . Propulsion systems have also been a main research subject.…”

Section: Introductionmentioning

confidence: 99%

Brief Analysis of Underwater Movements of Spherical Robot

Wang¹

2017

dtetr

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Abstract. Underwater robot has become an important tool for people to understand, develop and utilize the ocean. At present, thousands of underwater robots have been developed to satisfy the requirement of underwater tasks and many researchers pay more attention on the underwater robots. This paper uses CFD to simulate the horizontal motion, downward motion and rotary motion of the spherical underwater robot to analyze the influence of spherical robot underwater structure on velocity and pressure, which provides the basic data of underwater motion of the robot and lays the foundation for optimizing the control method of the robot.

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The hydrodynamic flow around a yacht keel based on LES and DES

Cited by 17 publications

References 27 publications

Investigation on Rudder Hydrodynamics for 470 Class Yacht

Investigation on Rudder Hydrodynamics for 470 Class Yacht

Investigation on Hull Hydrodynamics with Different Draughts for 470 Class Yacht

Brief Analysis of Underwater Movements of Spherical Robot

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