b'Engineer Innovation | Automotive It wasnoise, explains Dr. Blumrich. On oneSignificantly increased efficiency per hand, we measure the external noise,sessionwhere the noise is generated. And onThe new technology applied in the wind impressive.the other hand, we measure the interiortunnel opens new options for advancing noise with the internal array, artificialthe vehicle acoustic performance using Despite thehead and microphones to have thesource-transfer-receiver schematics. connection between what happensThis approach separates the exterior outside and how it is perceived inside.sources from their transfer to the short deadline,And this is one of the main benefits ofinterior noise. This results in the ability the Siemens Simcenter solution, thatto make informed decisions on how to Siemensyou can combine the exterior andbest tackle the acoustic problem. For interior measurements in a veryexample, instead of adapting the door sophisticated way. sealing design to avoid and block the managedfinal noise, this methodology identifies This means that the vehicle design mustthe possible adaptations of the noise to deploybe thought out and tested in detail,source, such as changing the design of because each small design adaptationthe side view mirror or wipers to avoid can have a significant impact on thethe noise generation. This approach everythingfinal vehicle acoustic performance:provides FKFS and their customers with consider parts like the A-pillar, side-viewmore ways to optimize the final acoustic in time. mirror, side windows, wipers and doorperformance. handles.Dr. Reinhard BlumrichIn general, using the latest Simcenter Head of the Vehicle Acoustics andOur typical customers are vehiclewind tunnel testing technology, results Vibration Departmentproducers, suppliers of, for example,that are obtained after a week of FKFS sunroofs and windows, says Dr.computational fluid dynamics (CFD) Blumrich. It is very common that findingcalculations can be achieved in a few the best design of the sealing system,minutes in the wind tunnel. The goal of A-pillar, side mirror and windshieldthis technology is to use advanced requires a lot of investigation. acoustic arrays to determine in real time 26'