CFD analysis with fluid–structure interaction of opening high-pressure safety valves

2012 ◽  
Vol 64 ◽  
pp. 108-116 ◽  
Author(s):  
A. Beune ◽  
J.G.M. Kuerten ◽  
M.P.C. van Heumen
Keyword(s):  
High Pressure ◽  
Fluid Structure Interaction ◽  
Cfd Analysis ◽  
Fluid Structure ◽  
Structure Interaction

Offshore Platform Fluid Structure Interaction Simulation

2012 ◽  
Author(s):  
Ali Marzban ◽  
Murthy Lakshmiraju ◽  
Nigel Richardson ◽  
Mike Henneke ◽  
Guangyu Wu ◽  
...  
Keyword(s):  
Fluid Structure Interaction ◽  
Offshore Platform ◽  
Material Behavior ◽  
Nonlinear Material ◽  
Structural Deformation ◽  
Fe Model ◽  
Cfd Analysis ◽  
Time Step ◽  
Fluid Structure ◽  
Structure Interaction

In this study a one-way coupled fluid-structure interaction (FSI) between ocean waves and a simplified offshore platform deck structure was modeled. The FSI model consists of a Volume of Fluid (VOF) based hydrodynamics model, a structural model and an interface to synchronize data between these two. A Computational Fluid Dynamics (CFD) analysis was used to capture the breaking wave and impact behavior of the fluid on the structure using commercially available software STAR-CCM+. A 3D Finite Element (FE) model of the platform deck developed in ABAQUS was used to determine the deflection of the structure due to hydrodynamic loads. Nonlinear material behavior was used for all structural parts in the FE model. Transient dynamic structural analysis and CFD analysis were coupled by transferring the CFD-predicted pressure distribution to the structural part in each time step using the co-simulation capabilities of STAR-CCM+ and ABAQUS. The one-way FSI model was applied to investigate the possible physical causes of observed wave damage of an offshore platform deck during a hurricane. It was demonstrated that with proper physical conditions/configurations, the FSI model could reproduce a structural deformation comparable to field measurement and provide valuable insight for forensic analysis.

Damping Effect in Fluid-Structure Interaction: Application to Slamming Problem

2003 ◽  
Author(s):  
N. Aquelet ◽  
M. Souli
Keyword(s):  
High Pressure ◽  
Physical Phenomenon ◽  
Fluid Structure Interaction ◽  
Underwater Explosion ◽  
Industrial Applications ◽  
Damping Factor ◽  
Local Pressure ◽  
Shipbuilding Industry ◽  
Fluid Structure ◽  
Structure Interaction

During a high velocity impact of a structure on an incompressible fluid, impulse loads with high pressure peaks occur. This physical phenomenon called ‘slamming’ is a concern in the shipbuilding industry because of the possibility of hull damage. Shipbuilding companies are carrying out several studies on the slamming modeling using FEM software. This paper presents the prediction of the local high pressure load on a wedge striking a free surface. The fluid-structure interaction is simulated by a fluid-structure coupling algorithm. This method of coupling, which makes it possible to transmit the efforts in pressure from the Eulerian grid to the Lagrangian grid and vice versa, is a relatively recent algorithmic development. It was successfully used in many scientific and industrial applications: the modeling of the bird strike on the fuselage of a Jet for the Boeing Corporation, underwater explosion shaking the oil platforms, and airbag simulation in automotive industry... Predicting the local pressure peak on the structure requires an accurate fluid-structure interaction algorithm. Thus, some penalty coupling enhancements make the slamming modeling possible. The main improvement is a numerical damping factor which permits to smoothing of the pressure signal.

Fluid-Structure Interaction Analysis on the Performance of the High-Pressure Fuel Pump for Diesel Engines

2016 ◽  
Author(s):  
Dexing Qian ◽  
Ridong Liao ◽  
Jianhua Xiang ◽  
Baigang Sun ◽  
Shangyong Wang
Keyword(s):  
High Pressure ◽  
Diesel Engines ◽  
Interaction Analysis ◽  
Physical Phenomenon ◽  
Fluid Structure Interaction ◽  
Dead Volume ◽  
Fuel Pump ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Spring Force

In this paper, a 3-D fluid-structure interaction (FSI) analysis on the performance of the high-pressure fuel pump for diesel engines is presented. The fluid and structure are two-way coupled and several complex factors are taken into accounts in the FSI model. For instance, the fluid model includes not only the high-pressure fuel pump but also the rail and pressure-control valve which are used to maintain a stable delivery pressure of the pump; Gap boundary condition is adopted to simulate the opening and closing of the valve; The flow is assumed to be nonisothermal and the physical properties of the fuel such as dynamic viscosity and density are functions of pressure and temperature. While in the structure model, the spring force on the valve and the contacts between the valve and the valve seat as well as the top block are considered. The calculated volumetric efficiency losses agree well with the experiments, which indicates that the FSI model established in this study could well predict the physical phenomenon taking place in the high-pressure fuel pump. Several new conclusions can be drawn from the discussions on the results such as the suction efficiency loss due to the delay closing of the inlet valve is extremely small while the suction loss due to the expansion of the high-pressure fuel entrapped in the dead volume is very large.

scholarly journals One-Way Fluid Structure Interaction of a Go-Kart Spoiler Using CFD Analysis

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 51
Author(s):  
Mohammad AL-Rawi ◽  
Abderrahmane Oumssount
Keyword(s):  
Fuel Economy ◽  
Fluid Structure Interaction ◽  
Cfd Analysis ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Recreational Vehicles ◽  
Rear Spoiler ◽  
Applied Forces ◽  
Air Flow Velocity ◽  
Velocity Pressure

The spoiler on a go-kart is required to prevent the vehicle becoming airborne at speeds of 80 km/h or more. An optimal spoiler design balances this safety aspect with speed and fuel economy. This paper reports the results of a project to improve the aerodynamic aspects of a go-kart spoiler design using CFD Analysis. We investigated the design of a rear spoiler with three proposed angles (θ1 = 9.5°, θ2 = 19.5°, θ3 = 29.5°). The drag force produced by each of the three designs is compared. Different computational results are discussed such as the air flow velocity, pressure and the applied forces in terms of CFD analysis using one-way fluid structure interaction (one-way FSI) to determine the spoiler stress, strain and drag coefficient. The findings of this paper have implications for the leisure and tourism industries, and may be applicable to other recreational vehicles’ spoilers.

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