Instantaneous static pressure distribution on runner shroud • Steady Mixing Plane and Frozen Rotor • Unsteady Sliding Grid • Unsteady Phase-Lagged 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 n e w w a v e in F l u id Dynamics Comparison of Non-Linear harmonic and sliding grid simulation: instantaneous blade pressure distribution and pressure fluctuation amplitude through FFT Mesh size 900,000 15.000,000 RAM 1.5Gb 7.5Gb Iterations 500 40,000 CPU Time w.r.t. 5 >1000 Steady Mixing Plane Also available in FINE ™ /Turbo and FINE ™ /Open with OpenLabs ™ : Advanced Developments for Better Products [email protected]∙ www.numeca.com ∙ www.numiberica.com Nonlinear Harmonic Method: A Major Breakthrough in Unsteady 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
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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
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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