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 [email protected] ∙ 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 [email protected] ∙ www.numeca.com ∙ www.numiberica.com
High Quality and Fast Meshing with AutoMesh™
