The Feasibility of Applying Commercial CFD to Predict Intake and Exhaust High Frequency Noise

I. Khan, University of Hull

Abstract

Unusual engine noises are systemic issues and often discovered late on during a vehicle development programme. Failure mode resolution at this stage in the programme tends be costly as the vehicle package has been frozen and parts released. A CAE tool would allow upfront assessments of the intake/exhaust systems and facilitate cost effect optimisation early on in the programme. Furthermore, a CAE tool could be used to aid failure mode resolution later on in the programme.

The objectives of this programme are to establish the feasibility of using the Large Eddy Simulation (LES) capability of commercial CFD to predict high frequency noise consistent with that found in the intake and exhaust systems. To provide design guidelines on minimising high frequency noise in intake/exhaust systems.