LISA can model 3D inviscid flows, general 2D flow according to the Navier-Stokes
equations, seepage through porous materials, hydrodynamic lubrication of bearings
and Non-Newtonian fluids such as plastic melt and food. It can also find seiche
or sloshing modes of liquids in tanks and enclosed basins.
Fluid elements
Velocity potential - inviscid
2D
- »3 & 6 node, triangle
- »4 & 8 node, quadrilateral
3D volume
- »8 node, hexahedron
Axisymmetric
- »3 node, triangle
- »4 node, quadrilateral
Porous media, steady stage/transient
2D
- »3 & 6 node, triangle
- »4 & 8 node, quadrilateral
3D volume
- »8 node, hexahedron
Axisymmetric
- »3 node, triangle
- »4 node, quadrilateral
Stream function - inviscid
2D
- »3 & 6 node, triangle
- »4 & 8 node, quadrilateral
Pipe network - viscous
3D pipe
- »2 node, uniform or tapered pipe
- »3 node, uniform pipe
Hydrodynamic lubrication
1D
- »2 node, line
Non-Newtonian fluid (pseudo-plastic/Bingham)
2D conduit cross-section
- »3 & 6 node, triangle
- »4 & 8 node, quadrilateral
Navier-Stokes - viscous, laminar, rotational flow
2D / Axisymmetric
- »6 node, triangle
- »8 node, quadrilateral
Wave (seiche) motion in a basin
2D
- »3 & 6 node, triangle
- »4 & 8 node, quadrilateral
Fluid analysis
Modeling
- » closed boundary fluid flow
- » newtonian and non-newtonian
- » incompressible
- » seepage
- » pseudo-plastic
- » Bingham
- » Navier-Stokes
- » pipe networks
- » rotational & irrotational
- » hydrodynamic lubrication
Boundary conditions
- » velocity potential
- » stream function
- » flow rate
Results
- » animation of transient models
- » color contour plot with or without nodal averaging
- » text file output
- » cut-away tool to view inside of the model