Structural Analysis and Fluid Structure Interactions (FSI) using I-deas and ADINA Part II: Fluid Structure Interaction - PowerPoint PPT Presentation

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Structural Analysis and Fluid Structure Interactions (FSI) using I-deas and ADINA Part II: Fluid Structure Interaction PowerPoint Presentation
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Structural Analysis and Fluid Structure Interactions (FSI) using I-deas and ADINA Part II: Fluid Structure Interaction

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Structural Analysis and Fluid Structure Interactions (FSI) using I-deas and ADINA Part II: Fluid Structure Interaction

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  1. Dr. Heck Consulting and Engineering Dr. Ulrich Heck: Structural Analysis and Fluid Structure Interactions (FSI) using I-deas and ADINA Part II: Fluid Structure Interaction This presentation contains animated gifs (PowerPoint 2000 or higher required, full screen presentation) Presented at 2002 PLM Europe Conference in Stuttgart, Oct, 2002 More information about our company and our simulation services: www.dhcae.de Dr. Ulrich Heck

  2. Dr. Heck Consulting and Engineering • FLUID-Structure Interactions: • Fluid flow causes deformation or movement of structure • Moveable or deformable structure effects fluid flow • Applications or processes (examples): • Biomedical: • Artificial heart valves, flow through veins or arteries • Automotive: • Flow in Pumps, valves, flow around car components • Aerospace • Flow around missiles, flow around airfoil components • Production • Injection moulding Dr. Ulrich Heck

  3. Dr. Heck Consulting and Engineering Example Modelling Fluid outlet Solid region (Membrane) Fluid Region In general: Fluid model: tetrahedral elements Solid Model: various element types possible (shell, various 2d or 3d-solid) Fluid inlet Dr. Ulrich Heck

  4. Dr. Heck Consulting and Engineering Integration of ADINA in I-deas already presented by A. Hodgson Dr. Ulrich Heck

  5. Dr. Heck Consulting and Engineering • Some special treatments in I-deas for FSI-modelling • Two separate FE-models: solid model and fluid model • Definition of elements with special properties (e.g. material labels) or boundary conditions at the FSI boundaries and walls • I-deas-ADINA interface translates and prepares the models • Post-processing is possible in I-deas for both models separately • Investigation of solid and fluid model: ADINA post-processing Dr. Ulrich Heck

  6. Dr. Heck Consulting and Engineering E h 2 R r C0 = Validation of ADINA FSI:Tube with elastic wall tube/flow properties: density r, radius R wall properties: thickness h, Young’s Modulus E wave propagation velocity: ADINA managed to determine the exact wave propagation velocity ! modelling: transient FSI Dr. Ulrich Heck

  7. Dr. Heck Consulting and Engineering • Example: Valve model • Flow around body • Membrane fixed in valve • close to fluid outlet • pressure at fluid inlet • velocity in tube • dynamic pressure • deformation of membrane • resistance of valve Dr. Ulrich Heck

  8. Dr. Heck Consulting and Engineering Dr. Ulrich Heck

  9. Dr. Heck Consulting and Engineering Dr. Ulrich Heck

  10. Dr. Heck Consulting and Engineering • 2. Example: Flexible tube compression • Flow through body • Tube with elastic wall • Increasing pressure load • Contact region Dr. Ulrich Heck

  11. Dr. Heck Consulting and Engineering Dr. Ulrich Heck

  12. Dr. Heck Consulting and Engineering • 3. Example: spring/mass analysis, damped by fluid viscosity • Transient analysis • Structural model: Shell elements • Increasing fluid viscosity: Increasing damping • Step deflection • Step spring back spring mass Fluid with viscosity h Dr. Ulrich Heck

  13. Dr. Heck Consulting and Engineering Walls Deflected spring Dr. Ulrich Heck

  14. Dr. Heck Consulting and Engineering Dr. Ulrich Heck

  15. Dr. Heck Consulting and Engineering Dr. Heck Consulting and Engineering • Conclusions • ADINA is a very powerful tool to solve FSI problems • ADINA is fully integrated in I-deas • Use of I-deas meshing and modelling capabilities • Requirement for users: • Experience in • Structural FEA and • CFD • is important for modelling and interpretation of results www.dhcae.de www.c-a-e.com Dr. Ulrich Heck