File size: 2.7 GB

SIMULIA XFlow offers unique, particle-based Lattice Boltzmann technology for high fidelity Computational Fluid Dynamics (CFD). This state-of-the-art technology enables users to address complex CFD problems involving high frequency transient aerodynamics, real moving geometries, complex multiphase flows, fluid structure interactions and aero acoustics.

XFlow's automatic lattice generation and adaptive refinement capabilities minimize user inputs thereby reducing time and effort in the meshing and pre-processing phase of a typical CFD workflow. This enables engineers to focus the majority of their efforts on design iteration and optimization, rather than the time consuming meshing process.

With XFlow's discretization approach, surface complexity is also not a limiting factor. The underlying lattice can be controlled with a small set of parameters; the lattice is tolerant to the quality of the input geometry and adapts to the presence of moving parts.

In addition, advanced rendering capabilities provide realistic visualization to gain deeper insight into flow and thermal performance. Xflow's unique capabilities enable companies to reduce physical testing while making to make better design decisions faster.

Whats New:
Co-simulations with Abaqus
XFlow and Abaqus co-simulations for advanced Fluid Structure Interaction (FSI) analysis:
Mutual exchange of information automatically performed by the Co-simulation Engine
The co-simulation interface region is a surface where the coupling acts.
XFlow treats the interface region as a solid moving boundary where the no-slip condition must be enforced
Abaqus requires the external fluid loads acting on the surface of the interface region

Co-simulation with Simpack via FMI standard
CFD and Multibody Dynamic (MBD) co-simulations via Functional Mock-up Interface (FMI) standard:
FMI is an independent standard to support co-simulation of dynamic models
Master (Simpack)-Slave (XFlow) configuration with data exchange between subsystems restricted to discrete communication points
Application: Vehicle control under side-wind effects
XFlow provides Simpack with the aerodynamic forces affecting the bodies
Simpack performs the multi-body simulation and runs the control system

Direct support of CATIA parts
Integration of Spatial 3D library to support CATIA's CATPart and CATProduct directly in XFlow
This Library allows also to support many other native CAD formats
Reduce requirements for CAD healing and defeaturing operations
A great step forward in reducing the CAD-to-CFD time

CST-XFlow one-way coupling
Two features have been implemented in order to allow importing CST STUDIO SUITE data to XFlow:
External VTK/VTU mesh data can be interpolated and read by XFlow
A new Volumetric Heat Source condition can now be applied to the entire fluid domain as a user-defined law
These two features allow the user to export to VTK/VTU format the energy scalar field from CST
simulation and use it as Volumetric heat source in XFlow.

Multiphase Volume of Fluid (VoF) solver
New Volume of Fluid (VoF) multiphase solver to complement the already existing Particle-Based Tracking and Phase field multiphase solvers.
This VoF solver is more adapted to large scale multiphase applications such as:
Tank sloshing
Dam break

Animated geometry behavior for simplified FSI analysis
Simplified approach to FSI analysis where:
Solid deformation is defined by a sequence of geometries representing a predefined deformation
The geometry deformation animation drives the fluid flow simulation

New thermal boundary conditions
Temperature Jump boundary condition that can be applied through a surface or a volume
Convection Radiation boundary condition to apply a heat flux resultant from a surrounding
temperature and a heat flux coefficient
Volume Heat Source boundary condition, available for porous volumes only, to model radiators and heat exchanger behavior

Minimum system requirements:
Quad core processor
Windows Vista x64 / Linux x64 (Linux needs glibc >= 2.5-34)
At least 6 GB of RAM memory
500 GB of hard disk
512 MB graphics card and OpenGL >= 3.1 (If you use remote session software please check its OpenGL support)

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