Browse Publications Technical Papers 2019-26-0362
2019-01-19

Aero-Acoustics Noise Prediction of 3D Treaded Tyre Using CFD 2019-26-0362

Tyre exterior noise legislation (pass-by) is becoming more stringent with time. To cater to these requirements, it is very important to understand the tyre noise generation and enhancing mechanisms such as air pumping, air turbulence, pipe resonance, horn effect in high frequency region from 500Hz to 4000Hz. These phenomena are affected by air flow around and within the tyre pattern hence, CFD based approach is chosen for tyre exterior noise. The CFD based methodology helps in finetuning the thread pattern to reduce aero acoustic noise level and also to reduce the product design cycle time. In present study, 3d transient CFD aero-acoustic modelling approach results were validated against the anechoic tyre rolling noise test data which captures the air-born noise mechanisms for frequency range of 1kHz to 4kHz.

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