Week 11- Broadband Noise modelling over Ahmed body

1. Ahmed body is a simplified model of automobile. Simulating airflow around this body helps us to capture the essential flow features that are relevant around an automobile. This model is also used to describe the turbulent flow field around a car-like geometry.

Solver settings for Broadband Noise modeling:

Enable body sizing for body of influence.

Insert inflation for named selections (of ahmed body)

Pressure-based analysis

Enable k-epsilon Realizable

Inlet:Velocity Specification Components: x= 31m/s

Specify road as Moving wall with velocity 31m/s

Outlet: pressure outlet with default values

Material: Air with default values

Compute from ilet with frontal area of ahmed body as 0.10408

Run the simulation till convergence is attained.

Turn ON Acoustics - Broadband Noise sources

Outputs:

Lift Coefficient

Drag Coefficient

Surface Acoustic Power Level (dB)

Acoustic Power Level (dB)

Lilley's Total Noise Source