DOLFYNFluid Dynamics powered byCyclone Fluid Dynamics BV

Cyclone Fluid Dynamics BVSweelincklaan 4 · NL-5583 XM WaalreNetherlandsinfo@cyclone.nl

SOFiSTiK AGBruckmannring 38 · 85764 OberschleißheimGermanyTel.: +49 (0)89 315878-0

info@sofi stik.comwww.sofi stik.com 04/2012

CONDITIONS

The DOLFYN version with full SOFiSTiK integration is distributed exclusively through SOFiSTiK and its sales partners and competence centres. Automatic mesh generation, wind defi nition and graphical interactive post-processing may require additional SOFiSTiK licenses.

Single seat licence of DOLFYN for SOFiSTiK:

4.900,-€

No multi-licence discount.

Ask us for individual offers and consulting …

DOLFYN – SOFiSTiK

DOLFYN is a Finite Volume software to solve incompressible fl uid dynamic problems in 3D.

DOLFYN Features

• Standard k-ɛ and RNG turbulence models• Stable numerical procedures• Temperature / scalars / particles included• Postprocessing with ParaView / VisIt (VTK-fi les)

Full integration in the SOFiSTiK environment

• Mesh generation with SOFIMSHA / SOFIMSHC• Automatic tetrahedral meshing (NETGEN)• Post-processing with WinGRAF• Full CADINP support including formulas for boundary and

initial conditions• Easy wind defi nition (atmospheric boundary layer) directly

or via SOFiLOAD• Standard wind profi les with turbulence parameters

according to EN 1991-4, SIA, DIN, SNIP• Direct generation of resulting wind loading in the data base

APPLICATIONS

Wind loading on bridge cross-sections

Wind loading on buildings

COMPUTATIONAL FLUID DYNAMICS

Computational Fluid Dynamics (CFD) is a standard numeri-cal method for solving any kind of fl uid motion and the transport of heat or particles within the fl uid. SOFiSTiK has gained consulting and project experience during the past years and is now supporting DOLFYN (www.dolfyn. net), an open source CFD-Solver used in practice in many engi-neering fi elds.

Applications in Civil and Structural Engineering

• Wind loading on buildings (bluff bodies)• Wind loading on moving bodies, especially bridges• Wind comfort and nuisance to cyclists and pedestrians• Wind energy• Heating and Ventilation (HVAC)• Fire safety engineering• Wave loadings

Windtunnel or CFD?

A wind tunnel is just a model of the reality, so is any CFD model. The wind tunnel needs scaling, Reynolds number is not the same and there are cases where this does matter. For fl exible structures, the measurement equipment may change the effects considerably. On the other hand there are known defi ciencies of numerical analysis, which do not allow taking all results for granted. “The purpose of com-puting is insight, not numbers.” said R. Hamming in 1962. So the question is not which technique to be used but how to combine both methods to their best use.