MULTI-PHYSICS SIMULATION IN THE 21st CENTURY.

Email: info@physica.co.uk

[ AERO-ACOUSTICS ]   [ CHEMICALLY REACTING FLOW ]
[ DYNAMIC FLUID-STRUCTURE INTERACTION ]
[ HIGH SPEED IMPACT ]   [ MAGNETOHYDRODYNAMICS ]
[ VARIABLY SATURATED FLOW ]   

Computational aero-acoustics

Computational Aero-Acoustics combines turbulent flow with sound propagation.

Aerodynamic noise can be the result of interaction between flow and solid bodies placed in its path, such as the sound of singing wires from overhead cables, or the familiar noise from car overtaking mirrors. PHYSICA, with a specifically written Acoustics module, addresses this problem in a two-step procedure:

• by using high order numerical schemes to extract sources of sound from the computed flow field, and
• by propagating the sound-waves away from the source with the help of a highly accurate finite-difference scheme.

Example applications include the interaction of a vortex with flat plates and aerofoils, sound generated from vibrating panels, resonance from partially closed cavities.

Results

• Sound generated by interaction of vortex with a flat plate [ IMAGE ]
• Pressure generated on automobile door cavity [ IMAGE ]
• Acoustic perturbation pressure generated on automobile door cavity [ IMAGE ]