Development and Validation of a Fluid-Structure Interaction Capability in the Loci/CHEM Solver

2013 ◽  
Author(s):  
Robert Harris ◽  
Vinod Venugopalan ◽  
Edward Luke
Keyword(s):  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Development And Validation

A New Formulation for Solids Suitable for a Unified Solution Method for Fluid-Structure Interaction Problems

2004 ◽  
Author(s):  
C. G. Giannopapa ◽  
G. Papadakis
Keyword(s):  
Solution Method ◽  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Stage Of Development ◽  
Cantilevered Beam ◽  
New Formulation ◽  
Development And Validation ◽  
Velocity Pressure ◽  
Single Set

In fluid-structure interaction problems, the fluid and solid components are solved separately and information is exchanged along the interface. This work shows the first stage of development and validation of a novel unified solution method suitable for computing fluid-structure interaction problems. In the new method, a single set of equations is used to describe both fluid and solid, while the interface between them is contained within the solution domain itself. This can be achieved by reformulating the solid equations to solve for the same primitive variables used in fluids i.e. velocity and pressure. The PISO algorithm is used to handle the velocity-pressure coupling. Although this is a standard approach for fluids, validation is needed for solids. Two cases are examined: wave propagation in a one-dimensional rod and oscillation of a 2D cantilevered beam. Appropriate set of boundary conditions is chosen for the free surface. The new formulation for solids is stable and robust, thus it can be used in the next stage in the development of a robust algorithm for coupled fluid-structure interaction problems.

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