Transoft International (www.fluidyn.com)

fluidyn - MP

COUPLED MULTI-PHYSICS PHENOMENA

FLUID / STRUCTURE / THERMAL / ACOUSTIC INTERACTIONS

fluidyn-MP is a general numerical platform for the simulation of fluid structure interactions and coupling. fluidyn-MP simultaneously calculates heat conduction and mechanical stress, in structures and flow and heat convection in the fluids in contact. It can also simulate vibratory - acoustics or pressure fluctuations.

fluidyn-MP models the multi-physics interactions by an innovative method which includes the strong coupling of advanced solution techniques for each study domain : Finite Volumes (FV) scheme for fluid flow calculations and Finite Elements scheme for structural, heat and acoustic calculations. For each of these solution techniques, various numerical schemes are available to adapt the software to the problem.

The strong coupling characteristic of the tested fluid and structure solution methods and the availability of various numerical schemes help to optimize the computational time to give precise and accurate results.

The coupled thermo mechanical calculation helps to simultaneously manage the heat transfer and structural deformation / displacement phenomena. The fluid mesh in contact with the structures deforms automatically (auto-adaptive mesh) as per the structural deformation. The transient phenomena are simulated with precision due to the permanent information exchange between the two solvers (FV et FE). The convective exchange coefficient is calculated at any moment in the boundary layers.

COMPLETE SOFTWARE SOLUTION:

fluidyn - CADGEN geometry and mesh generator
fluidyn - MP NS for 3D CFD simulation.
fluidyn - MP CHT for conjugate heat transfer analysis
fluidyn - MP FSI for fluid structure interaction
fluidyn - MP CAF for coupled fluid-acoustics analysis

MULTIPLICITY OF SOLVERS AND SOLUTION SCHEMES:
A highly adaptable and precise solution to each problem is possible thanks to the vast selection of appropriate solver and numerical schemes offered by fluidyn-MP.

FLUID MODELING (fluidyn-NS MODULE):

Analyzes incompressible flows and compressible at subsonic, transonic and supersonic speeds (with the shock-capturing)
Analyzes steady and transient flows
Analyzes viscous or inviscid flows
Finite volume scheme based on unstructured/multi-block mesh
Reactive flows as per different reaction models
Radiation in semi-transparent media
Structured block, unstructured, hybrid, non-conform, moving mesh.
Porous media (surface or volume porosities).
User coding is available

STRUCTURAL MODELING (fluidyn-FSI MODULE):

3D complex structures in finite elements
Available elements: hexahedral, tetrahedral or thin plates, beams and springs.
Transient (implicit or explicit scheme) or static analysis.
Stress and deformations linked to heat load taken into account.
Laws of behavior of elastic, elasto-plastic or piece wise linear materials and isotropic or orthotropic behavior.
Laws of plastification and damage (Steinberg Guinan, Johnson–Cook) available

MODELING HEAT TRANSFER (fluidyn-CHT MODULE):
Conduction calculation in the structure is done by the finite elements matrix solution. The analysis type can be transient (implicit or explicit scheme) or steady. The radiation taken into account with the shadow effect created by different obstacles can be modeled.

ACOUSTIC MODELING (fluidyn-CAF MODULE):
fluidyn-MP calculates the acoustic modes propagating in internal flow systems. The finite elements method is used to solve the Helmholtz equation. The temperature and fluid velocities are taken into account during the calculation of acoustic resonance modes.

POST-PROCESSOR:
The user-friendly graphical interface of fluidyn-MP allows result visualisation and interpretation (velocities, pressures, stress, deformations, temperature…) at any point during the calculation as well as the easy creation of images and result animations. The results can be viewed on faces, sections and profiles and are displayed in the form of vectors, iso-contours and iso-surfaces.

OPERATING PLATFORMS:
The software can be ported to any operating platform: Unix, Linux, Windows. It is readily available on following :

o UNIX/Linux OS (32-bit and 64-bit) on SUN, DEC ALPHA, SGI, IBM, HP, and other workstations

o Windows (32-bit)/Linux OS (32-bit and 64-bit) on Intel/AMD PC’s

The software is available in both single-user (single-license) and multi-user (floating license) mode. The code is also available in the parallelized version for use with multi-processor systems (Linux/UNIX).

USER REFERENCES:
AIR LIQUIDE, AVENTIS, CEA, CIAT, CITA, Cogentrix, DGA, EADS, EDF, Framatome, IFP, Mitsubishi, RATP, Saint-Gobain, Shell, SNCF, STBFT, Sumitomo, TOTAL, VNF, Zodiac, etc.