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166 Case Studies
Case Study: VIKING GmbH achieves improved mowing performance and noise reduction with ANSYS CFX
A ANSYS Case Study
Engineering Simulation Offers Insight into Performance and Noise Reduction Investigations in a Lawn Mower
VIKING GmbH, a 100% subsidiary of ANDREAS STIHL AG & Co. KG and manufacturer of lawn mowers and garden equipment, faced complex unsteady airflow inside mower decks where curved, double‑edged blades shed vortices that harmed catching performance and raised outdoor noise emissions. To gain the deeper aerodynamic insight required to improve mowing performance and meet noise regulations, VIKING turned to ANSYS and its ANSYS CFX software for computational fluid dynamics (CFD) analysis.
Using ANSYS CFX, VIKING engineers ran transient URANS rotor–stator simulations, set detailed boundary conditions in CFX‑Pre and performed post‑processing in CFD‑Post to compare with chute measurements. ANSYS CFX delivered good agreement with velocity measurements, revealed and allowed elimination of boundary separation, localized and enabled optimization of noise‑generating vortices, and let VIKING evaluate pressure allocation, mass flow and turbulence that are impossible to measure experimentally—helping the company improve catching performance and better comply with outdoor noise limits.
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VIKING GmbH
Jakob Trentini
VIKING GmbH