## Create optimized product designs and reduce time to market with highly-accurate fluid flow simulations—thermal energy transfer, mechanical and thermal stress, 6-degrees of freedom and fluid-solid interactions.

## ACCURACY

* FLOW-3D* delivers high accuracy simulation results faster by using our industry-leading algorithm

**TruVOF**. A pioneering volume of fluid tracking method,

**TruVOF**continues to set the industry standard for flow accuracy since its inception 35 years ago.

*is the result of collaborating with the world’s leading scientific, manufacturing and research companies to deliver accurate simulations and an efficient, collaborative workflow.*

**FLOW-3D**## EFFICIENCY

* FLOW-3D* employs our innovative meshing method

**FAVOR™**that dramatically improves problem setup by embedding the geometry directly into the mesh, allowing for rapid parametric adjustments without the labor-intensive remeshing required by other CFD software. Engineers spend their time visualizing, optimizing and collaborating on design concepts with leaner runtimes and more accurate results.

## COLLABORATION

FlowSight provides a powerful and simple method for understanding and sharing simulation results. Results can be compared by viewing both numerical and visual formats, analyzing iso surfaces from all six degrees simultaneously and linking and viewing separate cases together in the same viewport.

## Features

## *New in FLOW-3D v11.1

- Internal, external & free-surface flows
- 3D, 2D & 1D problems
- Transient flows
- Inviscid, viscous laminar & turbulent flows
- Hybrid shallow water/3D flows
- Non-inertial reference frame motion
- Multiple scalar species
- Two-phase flows
- Heat transfer with phase change
- Saturated & unsaturated porous media

- Fluid structure interaction
- Thermally-induced stresses
- Plastic deformation of solids
- Granular flow
- Moisture drying
- Solid solute dissolution
- Sediment transport and scour
- Cavitation (potential, passive tracking, active tracking)
- Phase change (liquid-vapor, liquid-solid)
- Surface tension
- Thermocapillary effects
- Wall adhesion
- Wall roughness
- Vapor & gas bubbles
- Solidification & melting
- Mass/momentum/energy sources
- Shear, density & temperature-dependent viscosity
- Thixotropic viscosity
- Visco-elastic-plastic fluids
- Elastic membranes & walls
- Evaporation residue
- Electro-mechanical effects
- Dielectric phenomena
- Electro-osmosis
- Electrostatic particles
- Joule heating
- Air entrainment
- Molecular & turbulent diffusion
- Temperature-dependent material properties
- Spray cooling

- General boundary conditions
- Symmetry
- Rigid and flexible walls
- Continuative
- Periodic
- Specified pressure
- Specified velocity
- Outflow
- Grid overlay
- Hydrostatic pressure
- Volume flow rate
- Non-linear periodic and solitary surface waves
- Rating curve and natural hydraulics
- Wave absorbing layer

- Restart from previous simulation
- Continuation of a simulation
- Overlay boundary conditions
- Change mesh and modeling options
- Change model parameters

- Natural convection
- Forced convection
- Conduction in fluid & solid
- Fluid-solid heat transfer
- Distributed energy sources/sinks in fluids and solids
- Radiation
- Viscous heating
- Orthotropic thermal conductivity
- Thermally-induced stresses

- RNG model
- Two-equation k-epsilon model
- Two-equation k-omega model
- Large eddy simulation

- Thermal stress & deformations
- Iron solidification
- Sand core blowing
- Sand core drying
- Permeable molds
- Solidification & melting
- Solidification shrinkage with interdendritic feeding
- Micro & macro porosity
- Binary alloy segregation
- Thermal die cycling
- Surface oxide defects
- Cavitation potential
- Lost-foam casting
- Semi-solid material
- Core gas generation
- Back pressure & vents
- Shot sleeves
- PQ
^{2}diagram - Squeeze pins
- Filters
- Air entrainment
- Temperature-dependent material properties
- Cooling channels
- Fluid/wall contact time

**TruVOF**Volume-of-Fluid (VOF) method for fluid interfaces- First and second order advection
- Sharp and diffuse interface tracking
- Implicit & explicit numerical methods
- GMRES, point and line relaxation pressure solvers
- User-defined variables, subroutines & output
- Utilities for runtime interaction during execution

- One incompressible fluid – confined or with free surfaces
- Two incompressible fluids – miscible or with sharp interfaces
- Compressible fluid – subsonic, transonic, supersonic
- Stratified fluid
- Acoustic phenomena
- Mass particles with variable density or diameter

- General topography
- Raster data interface
- Subcomponent-specific surface roughness
- Wind shear
- Ground roughness effects
- Laminar & turbulent flow
- Sediment transport and scour
- Surface tension
- Heat transfer
- Wetting & drying

- General Moving Object model with 6 DOF–prescribed and fully-coupled motion
- Rotating/spinning objects
- Collision model
- Tethered moving objects (springs, ropes, mooring lines)
- Flexing membranes and walls
- Porosity
- Finite element based elastic-plastic deformation
- Finite element based thermal stress evolution due to thermal changes in a solidifying fluid
- Combusting solid components

- Stiff equation solver for chemical rate equations
- Stationary or advected species

- Saturated and unsaturated flow
- Variable porosity
- Directional porosity
- General flow losses (linear & quadratic)
- Capillary pressure
- Heat transfer in porous media
- Van Genunchten model for unsaturated flow

- Massless marker particles
- Mass particles of variable size/mass
- Linear & quadratic fluid-dynamic drag
- Monte-Carlo diffusion
- Particle-Fluid momentum coupling
- Coefficient of restitution or sticky particles
- Point or volumetric particle sources
- Charged particles
- Probe particles

- Liquid/liquid & gas/liquid interfaces
- Variable density mixtures
- Compressible fluid with a dispersed incompressible component
- Drift flux
- Two-component, vapor/non-condensable gases
- Phase transformations for gas-liquid & liquid-solid
- Adiabatic bubbles
- Bubbles with phase change
- Continuum fluid with discrete particles
- Scalar transport
- Homogeneous bubbles
- Super-cooling

- Geometry input from Stereolithography (STL) files – binary or ASCII
- Direct interfaces with EnSight
^{®}, FieldView^{®}& Tecplot^{®}visualization software - Finite element solution import/export via Exodus-II file format
- PLOT3D output
- Neutral file output
- Extensive customization possibilities
- Solid Properties Materials Database

- State-of-the-art post-processing tool, FlowSight™
- Batch post-processing
- Report generation
- Automatic or custom results analysis
- High-quality OpenGL-based graphics
- Color or B/W vector, contour, 3D surface & particle plots
- Moving and stationary probes
- Measurement baffles
- Arbitrary sampling volumes
- Force & moment output
- Animation output
- PostScript, JPEG & Bitmap output
- Streamlines
- Flow tracers

- Active simulation control (based on measurement of probes)
- Mesh generators
- Mesh quality checking
- Tabular time-dependent input using external files
- Automatic time-step control for accuracy & stability
- Automatic convergence control
- Mentor help to optimize efficiency
- Change simulation parameters while solver runs
- Launch and manage multiple simulations
- Automatic simulation termination based on user-defined criteria
- Run simulation on remote servers using remote solving

- Shared memory computers
- Distributed memory clusters

**FLOW-3D** is the result of 35 years of collaboration

with the world’s leading scientific, academic and manufacturing institutions.

**FLOW-3D**