Analytical and Numerical Investigation of the Fluid Structure Interaction of an Elastic Beam in a Water Channel

2021 ◽  
Author(s):  
Manuel Fritsche ◽  
Philipp Epple ◽  
Antonio Delgado
Keyword(s):  
Numerical Investigation ◽  
Fluid Structure Interaction ◽  
Water Channel ◽  
Elastic Beam ◽  
Fluid Structure ◽  
Structure Interaction

scholarly journals Three-Dimensional Fluid–Structure Interaction Case Study on Elastic Beam

2020 ◽  
Vol 8 (9) ◽  
pp. 714
Author(s):  
Mahdi Tabatabaei Malazi ◽  
Emir Taha Eren ◽  
Jing Luo ◽  
Shuo Mi ◽  
Galip Temir
Keyword(s):  
High Speed ◽  
Flow Direction ◽  
Fluid Structure Interaction ◽  
Water Channel ◽  
Three Dimensional ◽  
Elastic Beam ◽  
Flexible Beam ◽  
Camera System ◽  
Fluid Structure ◽  
Structure Interaction

A three-dimensional T-shaped flexible beam deformation was investigated using model experiments and numerical simulations. In the experiment, a beam was placed in a recirculating water channel with a steady uniform flow in the inlet. A high-speed camera system (HSC) was utilized to record the T-shaped flexible beam deformation in the cross-flow direction. In addition, a two-way fluid-structure interaction (FSI) numerical method was employed to simulate the deformation of the T-shaped flexible beam. A system coupling was used for conjoining the fluid and solid domain. The dynamic mesh method was used for recreating the mesh. After the validation of the three-dimensional numerical T-shaped flexible solid beam with the HSC results, deformation and stress were calculated for different Reynolds numbers. This study exhibited that the deformation of the T-shaped flexible beam increases by nearly 90% when the velocity is changed from 0.25 to 0.35 m/s, whereas deformation of the T-shaped flexible beam decreases by nearly 63% when the velocity is varied from 0.25 to 0.15 m/s.

Analytical and Numerical Investigation of the Fluid Structure Interaction of an Elastic Beam in a Water Channel

2020 ◽  
Author(s):  
Manuel Fritsche ◽  
Philipp Epple ◽  
Antonio Delgado
Keyword(s):  
Numerical Simulations ◽  
Cfd Simulation ◽  
Pressure Field ◽  
Fluid Structure Interaction ◽  
Water Channel ◽  
Elastic Beam ◽  
Beam Deflection ◽  
Sensor Technology ◽  
Fluid Structure ◽  
Structure Interaction

Abstract The interaction between fluids and solids is becoming increasingly important in the design and analysis of machines, buildings and systems. Due to the fluid-mechanical phenomenon of turbulence and the associated flow and vortex shedding, the fluid structure interaction must be considered, for example, in aircraft wings, civil engineering (e. g. television towers or bridges), the rotor blades of wind turbines or in the field of sensor technology. Due to the increasing computing power, increasingly complex tasks can be calculated with the help of numerical simulations. In this paper, an elastic beam has been defined as test case and has been analyzed in different ways with the methods of the fluid structure interaction (FSI), i.e. with analytical and numerical approaches. For this purpose, the plastic beam has been fixed on one side in a water channel and the flow around it and the beam deflection have been measured. The deformation of the beam due to the flow load around it has been analyzed for varied flow velocities. First, the beam deformation has been estimated based on the analytical equations from structural mechanics and an assumed stagnation pressure on the beam surface. Additionally, the drag coefficient from experimental data of the literature was used to estimate the force on and the bending of the beam. Then two numerical simulations with different FSI coupling methods have been performed with Ansys Workbench 2020 R1. On the one hand, a one-way coupling analysis has been performed in which the pressure field was calculated from the CFD simulation and then transferred to the mechanical analysis. On the other hand, a two-way coupling computation has been performed, which also takes transient effects into account. For this purpose, the flow field and the pressure field have been exchanged iteratively between the fluid and the mechanical solver. This coupling approach is general and corresponds to reality since large deformations and non-linearities are considered. However, this approach always requires a very computation intensive, non-stationary calculation. The results obtained from these parameter studies have then been evaluated and compared in order to determine the accuracy of each analysis methodology. The elaborated results have been discussed and analyzed in detail.

scholarly journals Experimental and numerical investigation of the fluid-structure interaction on a flexible composite hydrofoil under viscous flows

2019 ◽  
Vol 194 ◽  
pp. 106647 ◽  
Author(s):  
Laetitia Pernod ◽  
Antoine Ducoin ◽  
Hervé Le Sourne ◽  
Jacques-André Astolfi ◽  
Pascal Casari
Keyword(s):  
Numerical Investigation ◽  
Fluid Structure Interaction ◽  
Viscous Flows ◽  
Fluid Structure ◽  
Structure Interaction

Numerical Investigation of Bumps and Oscillation in the Cylindrical Membrane Inflation

2013 ◽  
Vol 444-445 ◽  
pp. 1335-1339
Author(s):  
Cong Lei Wang ◽  
Jian Hong Sun ◽  
Chang Yue Xu
Keyword(s):  
Numerical Investigation ◽  
Vortex Flow ◽  
Fluid Structure Interaction ◽  
Jet Flow ◽  
Wave System ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Working Performance ◽  
Membrane Inflation ◽  
Compressible Jet

Numerical investigation on the fluid structure interaction in the cylindrical membrane inflation is performed by the Euler-Largrangian method. In membrane inflation, the vortex flow and wave system induced by the interaction between compressible jet flow and membrane appeared inside membrane. This phenomenon concentrates the stresses and generates a pair of bumps. The influences of oscillation and bumps on membrane working performance and safety are also investigated.

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