Instantaneous static pressure distribution on runner shroud

Also available in FINE™/Turbo and FINE™/Hexa:• Steady Mixing Plane and Frozen Rotor• Unsteady Sliding Grid • Unsteady Phase-Lagged

Advanced Developments for Better Productswww.numeca.com www.numiberica.com

Non Linear Harmonic Method: A Major Breakthrough in Unsteady CFD simulations• Accurate Rotor/Stator interactions • Single passage mesh simulations• Accurate unsteady solution with low number of harmonics (Blade Passing Frequencies)

• Reconstruction in time of the solution

Advanced CFD and Optimization solutions for Hydro Engineering

A new wave in Fluid Dynamics

Comparison of Non-Linear harmonic and

sliding grid simulation:

instantaneous blade pressure

distribution and pressure

fluctuation amplitude

through FFT Non-Linear Harmonic Sliding Grid

Mesh size 900,000 15.000,000RAM 1.5Gb 7.5GbIterations 500 40,000CPU Time w.r.t. 5 >1000 Steady Mixing Plane

CPU cost comparison for Non-Linear Harmonic and Sliding Grid simulations w.r.t. steady Mixing Plane simulations

layout3_lamina2.indd 10/19/2009, 6:45 PM1

leaflet_hydro_fond.pdf 1 15/09/14 14:31leaflet_hydro_fond.pdf 1 15/09/14 14:31leaflet_hydro_fond.pdf 1 15/09/14 14:31leaflet_hydro_fond.pdf 1 15/09/14 14:31

Also available in FINE™/Turbo and FINE™/Open with OpenLabs™ :

Advanced Developments for Better Productssales@numeca.be ∙ www.numeca.com ∙ www.numiberica.com

Nonlinear Harmonic Method: A Major Breakthrough inUnsteady CFD simulations

Comparison of Nonlinear

CPU cost comparison for Nonlinear Harmonic and Sliding Grid simulations w.r.t. steady Mixing Plane simulations

Nonlinear Harmonic Sliding Grid

High Quality all hexahedra cells meshing with AutoGrid5™ and HEXPRESS™

• Multi-point and multi-objective optimization

• Fully automatic process with no user intervention

• Optimization featuring Design of Experiments, Artificial Neural Network and Genetic Algorithms

• Powered by AutoBlade™, 3D parametric blade modeler

Advanced Cavitation modeling

Unstructured mesh for spiral casing and distributor (HEXPRESS™ - 1 hour CPU time)

Full 3D blade optimization with FINE™/Design3D

Advanced Developments for Better Productswww.numeca.com www.numiberica.com

Structured mesh for Francis turbine stay vane, guide vane

and runner (AutoGrid5™ - mesh generated in a few minutes on a

standard PC)

Centrifugal Pump – Cavitation increase on suction side of the impeller with

decreasing NPSH

Optimized blade and comparison of B2B

Sections (initial in red and optimized in green)

BEFO

RE

AFT

ER

layout3_lamina2.indd 10/19/2009, 6:45 PM2

leaflet_hydro_fond_p2.pdf 1 15/09/14 14:56

Advanced Developments for Better Productssales@numeca.be ∙ www.numeca.com ∙ www.numiberica.com

High Quality and Fast Meshing with AutoMesh™