Aeroelastic Analysis of a Single Element Composite Wing in Ground Effect Using Fluid Structure Interaction

2021 ◽  
Author(s):  
Chris Sungkyun Bang ◽  
Zeeshan Rana ◽  
László Könözsy ◽  
Veronica M. Rodriguez ◽  
Clive Temple
Keyword(s):  
Structural Analysis ◽  
Flow Field ◽  
Fluid Structure Interaction ◽  
Ground Effect ◽  
Elastic Behaviour ◽  
Single Element ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Composite Wing ◽  
Wing In Ground Effect

Abstract The present work focuses on an advanced coupling of computational fluid dynamics (CFD) and structural analysis (FEA) on the aeroelastic behaviour of a single element inverted composite wing with the novelty of including the ground effect. The front wing of the Formula One (F1) car can become flexible under the fluid loading due to elastic characteristics of composite materials, resulting in changing the flow field and eventually altering overall aerodynamics. The purpose of this study is to setup an accurate fluid-structure interaction (FSI) modelling framework and to assess the influence of elastic behaviour of the wing in ground effect on the aerodynamic and structural performance. Different turbulence models are studied to better capture the changes of the flow field and variation of ride heights are considered to investigate the influence of ground effect on aerodynamic phenomena. A steady-state two-way coupling method is exploited to run the FSI numerical simulations using ANSYS, which enables simultaneous calculation by coupling CFD with FEA. The effect of various composite structures on the wing performance is extensively studied concerning structure configuration, ply orientation and core materials. The numerical results generally represent good agreement with the experimental data, however, discrepancy, especially in the aerodynamic force, is presented. This may be consequence of less effective angle of attack due to the wing deflection and deterioration of vortex-induced effect. For the structural analysis, the woven structure gives rise to more stable structural deflection than the unidirectional structure despite the associated weight penalty.

scholarly journals The Research Of Fluid-structure Interaction Of The Hydrocyclone Under The Condition Of Vibration

2019 ◽  
Vol 118 ◽  
pp. 02075
Author(s):  
Xu Dekui
Keyword(s):  
Flow Field ◽  
Flow Characteristic ◽  
Fluid Structure Interaction ◽  
Tangential Velocity ◽  
Vibration Frequencies ◽  
Spatiotemporal Evolution ◽  
External Disturbances ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Structural Motion

During the operation of the hydrocyclone, vibrations are often generated by internal fluids and external disturbances resulting in fluid-structure interaction, causing the spatiotemporal evolution of the flow field and the movement of the structure. In this paper, the flow characteristic and the structural motion of the periodic vibrating hydrocyclones are studied. The bidirectional fluid-solid model of hydrocyclone under vibration condition is established. The flow field and structure motion under different vibration frequencies and structure resonances are studied. It shows that the velocities in the three directions oscillate positively and negatively with the motion of structure, the amplitude of the oscillation is the largest on resonance, the skewing of the velocity in the flow field is smaller than the structure; the tangential velocity is asymmetric and the radial velocity is increased significantly, the deformation of the structure is different on the different vibration frequencies, which causes the flow field of distribution of each section to be different. This study will provide the theoretical guidance for the application of hydrocyclone under the vibration conditions.

Numerical simulation of fluid-structure interaction in the opening process of conical parachute

2009 ◽  
Vol 113 (1141) ◽  
pp. 165-175
Author(s):  
Y. Cao ◽  
Z. Wu ◽  
Q. Song ◽  
J. Sheridan
Keyword(s):  
Flow Field ◽  
Deformation Process ◽  
Fluid Structure Interaction ◽  
Field Variation ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Parachute System ◽  
Computational Fluid Dynamics Cfd ◽  
Flexible Canopy ◽  
Opening Process

Abstract According to multi-node model, the dynamics equations of conical parachute system for simulating shape deformation process of the flexible canopy in the opening process were established. With the combination of dynamics equations code and computational fluid dynamics (CFD) software, the fluid-structure interaction investigation of the conical parachute was carried out. Also the change of parachute shape and flow field, inflation time, the rate of descent, the distance of descent, and other relevant data were achieved. This paper has focused on analysing vortex structure of the flow field in the opening process of conical parachute, and laid the foundation for studying mechanics mechanism of flow field variation of conical parachute in future.

scholarly journals Numerical Validation of the Two-Way Fluid-Structure Interaction Method for Non-Linear Structural Analysis under Fire Conditions

2021 ◽  
Vol 9 (4) ◽  
pp. 400
Author(s):  
Donghan Woo ◽  
Jung Kwan Seo
Keyword(s):  
Structural Analysis ◽  
Oil Spills ◽  
Proper Time ◽  
Fluid Structure Interaction ◽  
Structural Response ◽  
Offshore Structures ◽  
Fire Dynamics ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Non Linear

Fire accidents on ships and offshore structures lead to complex non-linear material and geometric behavior, which can cause structural collapse. This not only results in significant casualties, but also environmental catastrophes such as oil spills. Thus, for the fire safety design of structures, precise prediction of the structural response to fire using numerical and/or experimental methods is essential. This study aimed to validate the two-way fluid-structure interaction (FSI) method for predicting the non-linear structural response of H-beams to a propane burner fire by comparison with experimental results. To determine the interaction between a fire simulation and structural analysis, the Fire-Thermomechanical Interface model was introduced. The Fire Dynamics Simulator and ANSYS Parametric Design Language were used for computational fluid dynamics and the finite element method, respectively. This study validated the two-way FSI method for precisely predicting the non-linear structural response of H-beams to a propane burner fire and proposed the proper time increment for two-way FSI analysis.

scholarly journals Fluid-Structure Interaction of Wind Turbine Blade Using Four Different Materials: Numerical Investigation

Symmetry ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1467 ◽  
Author(s):  
Rajendra Roul ◽  
Awadhesh Kumar
Keyword(s):  
Structural Analysis ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Fluid Structure Interaction ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Arterial Blood ◽  
Physical Phenomena

The interaction of a flexible system with a moving fluid gives rise to a wide variety of physical phenomena with applications in various engineering fields, such as aircraft wing stability, arterial blood progression, high structure reaction to winds, and turbine blade vibration. Both the structure and fluid need to be modeled to understand these physical phenomena. However, in line with the overall theme of this strength, the focus here is to investigate wind turbine aerodynamic and structural analysis by combining computational fluid dynamics (CFD) and finite element analysis (FEA). One-way coupling is chosen for the fluid-structure interaction (FSI) modeling. The investigation is carried out with the use of commercialized ANSYS applications. A total of eight different wind velocities and five different angles of pitch are considered in this analysis. The effect of pitch angles on the output of a wind turbine is also highlighted. The SST k-ω turbulence model has been used. A structural analysis investigation was also carried out and is carried out after importing the pressure load exerted from the aerodynamic analysis and subsequently finding performance parameters such as deformation and Von-Mises stress.

Coupling Function and Mechanism of the Bionic Coupling Functional Surface (BCFS) Caused by the Dual Factors of Form and Flexible Material

2013 ◽  
Vol 461 ◽  
pp. 681-689
Author(s):  
Li Mei Tian ◽  
Yin Ci Wang ◽  
Zhi Hua Gao ◽  
Zhao Guo Bu ◽  
Lu Quan Ren ◽  
...  
Keyword(s):  
Flow Field ◽  
Fluid Structure Interaction ◽  
Functional Surface ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Pressure Drag ◽  
Smooth Structures ◽  
Flexible Materials ◽  
Two Factors ◽  
Bionic Coupling

Some living creatures have special structures on their body surfaces, such as smooth and elastic epidermis with subcutaneous tissue having non-smooth structures under certain conditions. The elastic epidermis coupled with non-smooth structures has a special function called bio-coupling functional surface. Imitating this functional surface and applying it in engineering has a potential to solve some engineering problems. Based on the simulation method of fluid-structure interaction (FSI), simulation calculation of the bionic functional surface coupled by the two factors, form and flexible materials was conduct using ADINA software. A viscous and weakly compressible transient flow was selected as a working medium, a discrete solver was selected in numerical calculation and the basic model was chosen as a turbulence model. It is assumed that the coupling surface of the form/flexible materials results is large deformation and large strain. The boundary condition of fluid-structure interaction was set as the calculation surface. The simulation results showed that this coupling is a dynamic process, in which the two factors (form and flexible materials) are influenced by the flow field. As the pressure and velocity of the flow field increase, the coupling process changes from partial coupling to complete coupling, the pressure drag decreased due to the maximum effective stress of bionic coupling surface is very small and the smooth and flexible materials can redistribute pressure by absorbing and releasing energy, the pressure drag thus formed is decreased. Moreover, non-smooth structures (form factor) coupled with flexible materials reduced velocity of working face and minimise energy losses effectively, enabling the bionic coupling surface to reduce drag.

scholarly journals Numerical Modelling of Fluid-Structure Interaction for Thermal Buckling in Hypersonic Flow

2020 ◽  
pp. 341-355
Author(s):  
Katharina Martin ◽  
Dennis Daub ◽  
Burkard Esser ◽  
Ali Gülhan ◽  
Stefanie Reese
Keyword(s):  
Flow Field ◽  
Hypersonic Flow ◽  
Fluid Structure Interaction ◽  
Aircraft Design ◽  
Thermal Buckling ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Mechanical Constraints ◽  
Set Up ◽  
German Aerospace

Abstract Experiments have shown that a high-enthalpy flow field might lead under certain mechanical constraints to buckling effects and plastic deformation. The panel buckling into the flow changes the flow field causing locally increased heating which in turn affects the panel deformation. The temperature increase due to aerothermal heating in the hypersonic flow causes the metallic panel to buckle into the flow. To investigate these phenomena numerically, a thermomechanical simulation of a fluid-structure interaction (FSI) model for thermal buckling is presented. The FSI simulation is set up in a staggered scheme and split into a thermal solid, a mechanical solid and a fluid computation. The structural solver Abaqus and the fluid solver TAU from the German Aerospace Center (DLR) are coupled within the FSI code ifls developed at the Institute of Aircraft Design and Lightweight Structures (IFL) at TU Braunschweig. The FSI setup focuses on the choice of an equilibrium iteration method, the time integration and the data transfer between grids. To model the complex material behaviour of the structure, a viscoplastic material model with linear isotropic hardening and thermal expansion including material parameters, which are nonlinearly dependent on temperature, is used.

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