Introduction to OpenFOAM

1
Introduction to OpenFOAM

• A tutorial on how to use dynamic mesh solver
  IcoDyMFoam
• Performed by Pirooz Moradnia
• Spring 2008, Göteborg-Sweden

2
Table of Contents

• Basics of IcoDyMFoam
• Mesh manipulation approaches
• Mesh manipulation models
• Point motion solvers
• Diffusivity models
• A few examples

3
Basics of IcoDyMFoam

• Transient solver
• Incompressible-Laminar flow
• Newtonian fluids
• Moving mesh

4
Mesh manipulation approaches

• Fixed mesh topology i.e. spacing between the
  nodes changes (Automatic approach in IcoDyMFoam)
• Variable mesh topology with help of
• boundary attachment or detachment
• Layer addition or removal
• Sliding interfaces

5
Mesh manipulation models

• dynamicFvMesh library models
• staticFvMesh (no change in mesh)
• dynamicMotionSolverFvMesh (solving for the cell
  motion equations)
• dynamicInkJetFvMesh (harmonic mesh motion)
• topoChangerFvMesh library models
• linearValveFvMesh (sliding interface)
• linearValveLayersFvMesh (sliding interface with
  layer addition and removal)
• mixerFvMesh (sliding interface in cylindrical
  coordinates)
• movingConeTopoFvMesh (layer addition and removal)

6
Point motion solvers

• displacementLaplacian
• solving for the laplacian of the diffusivity and
  cell displacement
• velocityLaplacian
• solving for the laplacian of the diffusivity and
  cell velocity
• SBRStress
• a displacement solver, taking care of Solid
  Body Rotation

7
Diffusivity models

• quality-based methods
• uniform
• directional
• motion directional
• inverseDistance
• distance-based methods
• linear
• quadratic
• exponential

8
A few examples
9
Thank You!