25 Result(s)
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Article
Flow characteristics and bubble statistics during the fragmentation process of the ingested main cavity in plunging breaking waves
Plunging breaking waves play an important role in the exchange of heat, momentum, and mass between the atmosphere and ocean. In this paper, a series of direct numerical simulations is conducted to investigate ...
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Article
Numerical analysis of coupled sloshing and motion of a cylindrical FPSO in regular waves
In this paper, the coupled sloshing and motion characteristics of a cylindrical floating production storage offloading (CFPSO) are numerically investigated by means of computational fluid dynamics (CFD) tool. ...
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Article
Numerical simulation of liquid sloshing in a spherical tank by MPS method
This paper investigates the sloshing phenomena in a spherical liquid tank using the moving particle semi-implicit (MPS) method, a crucial study in fluid dynamics. Distinct from previous research focused on rec...
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Article
Numerical investigation of the coupled aero-hydrodynamic performances of a semi-submersible floating offshore wind turbine with inclined columns
Numerical investigations of floating platforms with different outer column inclined angles under two operating conditions of regular wave and irregular wave are presented in this paper. A coupled aero-hydrodyn...
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Article
Numerical analysis of turbulent fluctuations around an axisymmetric body of revolution based on wall-modeled large eddy simulations
Wall-modeled large eddy simulation (WMLES) is used to investigate turbulent fluctuations around an axisymmetric body of revolution. This study focuses on evaluating the ability of WMLES to predict the fluctuat...
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Article
Assessment of subgrid-scale models in wall-modeled large-eddy simulations of turbulent channel flows
Considering the demanding of grid requirements for high-Reynolds-number wall-bounded flow, the wall-modeled large-eddy simulation (WMLES) is an attractive method to deal with near wall turbulence. However, the...
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Article
Numerical simulations of faraday waves in cylindrical and hexagonal tanks based on MPS method
When a partially loaded liquid container vibrates along the vertical direction, the liquid inside will oscillate regularly, which is called Faraday wave. In some cases, the wave form of the Faraday wave is sta...
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Article
Wall-modeled large eddy simulation for the flows around an axisymmetric body of revolution
The flow around an axisymmetric body of revolution (DARPA SUBOFF bare model) at Re = 1.2 × 107 is numerically investigated using the wall-modeled large eddy simulation (WMLES). To evaluate the capabilities of WML...
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Article
Omega-Liutex method for the interaction among wave, current and fixed vertical cylinder
This paper presents a numerical investigation of the interaction among wave, flow and a fixed cylinder using the naoe-FOAM-SJTU solver, which is a viscous solver for hydrodynamics based on OpenFOAM. The simula...
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Article
An overview of flow field computational methods for hydrodynamic noise prediction
Recently, the hydrodynamic noise is becoming a research hotspot because it not only affects the concealment and comfort of ships, but also affects the living condition of underwater mammals. Accurate predictio...
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Article
Numerical investigation on the effects of current headings on vortex induced motions of a semi-submersible
In this paper, numerical simulations on vortex-induced motions (VIM) of a semi-submersible at two different current headings are conducted over a wide range of current velocities. The simulations are performed...
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Article
Vortex structures of dynamic pure yaw test using DDES approach and vortex identification method
Considered as the building blocks, vortex structures with variety of sizes and intensity are widely recognized in the viscous flow field around ship. In this paper, the computational fluid dynamics (CFD) solve...
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Article
Numerical study of free end effect of cylinder with low aspect ratios on vortex induced motion
In this paper, numerical simulation is conducted via our in-house solver, vim-FOAM-SJTU, developed on open-source software, OpenFOAM. Flow around static rigid cylinders and elastically mounted rigid cylinder c...
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Article
Numerical simulations of sloshing waves in vertically excited square tank by improved MPS method
Faraday wave is a phenomenon of sloshing due to a heave motion of a partially filled tank, which is also called parametric instability or parametric resonance. In the present paper, the phenomenon of faraday w...
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Article
Numerical simulations of multi-layer-liquid sloshing by multiphase MPS method
In this paper, a multiphase moving particle semi-implicit (MPS) method is developed by introduction of various multiphase models into the original MPS method for single-phase flows, and is then applied to the ...
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Article
Optimization of the roll motion of box-shaped hull section with anti-rolling sloshing tanks and fins in beam waves
With the development of ocean engineering and demand for safety of the ship and offshore structures, the transportation and storage of liquid have become an important issue nowadays. Furthermore, in order to i...
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Article
Liutex force field model applied to three-dimensional flows around a circular cylinder at Re = 3 900
Recently, the Liutex-based force field models are proposed and applied to some two-dimensional flows to explore the possibility of direct vortex control strategies. In this paper, we applied the Liutex-based c...
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Article
Liutex-based centripetal force field model for improving the resistance and wake performances of JBC ship sailing in calm water
For complex aerodynamic and hydrodynamic problems, the analysis of vortex is very important. The Liutex method is an eigenvalue-based method which is local, accurate, and unique, which can give an accurate def...
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Article
Applications of Liutex-based force field models for cavitation simulation
When studying the flow dynamics and the characteristics of fluid motion, vortex structure with their interactions is the key issue. In the present work, a vortex control method is investigated based on the vor...
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Article
Parametric study of Liutex-based force field models
The motion of fluid consists of different scales of coherent vortical structures. These vortical structures determine the characteristics of fluid motion and are key to understand fluid dynamics. In this paper...
