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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 - PowerPoint PPT Presentation


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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)

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Presentation Transcript
slide1

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

slide2

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

slide3

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

slide4

Dr. Heck

Consulting and

Engineering

Integration of ADINA in I-deas

already presented by A. Hodgson

Dr. Ulrich Heck

slide5

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

slide6

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

slide7

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

slide8

Dr. Heck

Consulting and

Engineering

Dr. Ulrich Heck

slide9

Dr. Heck

Consulting and

Engineering

Dr. Ulrich Heck

slide10

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

slide11

Dr. Heck

Consulting and

Engineering

Dr. Ulrich Heck

slide12

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

slide13

Dr. Heck

Consulting and

Engineering

Walls

Deflected spring

Dr. Ulrich Heck

slide14

Dr. Heck

Consulting and

Engineering

Dr. Ulrich Heck

slide15

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