advanced cfd and optimization solutions for hydro engineering · 2018-04-10 · structured mesh for...
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![Page 1: Advanced CFD and Optimization solutions for Hydro Engineering · 2018-04-10 · Structured mesh for Francis turbine stay vane, guide vane and runner (AutoGrid5™ - mesh generated](https://reader033.vdocuments.mx/reader033/viewer/2022042207/5ea9efeb757a9f77955e4cfe/html5/thumbnails/1.jpg)
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
![Page 2: Advanced CFD and Optimization solutions for Hydro Engineering · 2018-04-10 · Structured mesh for Francis turbine stay vane, guide vane and runner (AutoGrid5™ - mesh generated](https://reader033.vdocuments.mx/reader033/viewer/2022042207/5ea9efeb757a9f77955e4cfe/html5/thumbnails/2.jpg)
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™