Acoustic Metamaterials for Flow Open Systems
Volvo Business Services AB / Elektronikjobb / Göteborg
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hela Sverige The increased demand for cooling with new technologies in the automotive sector associated with new propulsion technologies had as drawback an increased demand for fan performance.
As a result, the noise level due to the high-speed fans have increased, reaching levels that can cause disturbance for the customer and the environment.
The control of the noise at the source is complex and generally impact the component performance in a tradeoff that is hard to manage.
In this case, passive noise control methods can be used. These methods work in the path between the noise source and receiver, but this is currently made with noise barriers which cannot be used in such application since a blockage of the air flow occur.
To overcome this issue, metamaterials seem to be a good solution. Such materials are composed of unique single units that are designed to meet the requirements and the combination of such single units will form the complete component.
The metamaterial to be studied in this thesis will allow airflow through it but will reduce the noise transferred to the environment. A schematic concept is presented below.
Description of the Work
The following activities are expected:
Literature survey of metamaterial concepts and theories
Design of different cells for metamaterials using a CAD tool in COMSOL
Evaluation and parametric modelling of the acoustic performance using COMSOL
Simulation of the flow, pressure drop evaluation for acoustic metamaterial using COMSOL or Star-CCM+
If time allows, build prototypes and perform acoustic evaluation at the acoustic laboratory of Volvo Group.
Qualifications
Prerequisites: acoustics or fluid dynamics, knowing COMSOL or Star-CCM+ (if not, one is expected to be open for learning the tools quickly).
Organized and self-driven
Group size: 1-2 students
Language
The work will be performed in English
Starts
2023/2024: an early start is favored.
Tutors
Sofia Luvö, Expert Eng. Noise shields, Volvo Trucks
Wei Na, Lead Vehicle Analyst Exterior Noise, Volvo Trucks
Huadong Yao, Assoc. Prof, Division of Fluid Dynamics, Chalmers +46-31-772 1405
Kindly note that due to GDPR, we will not accept applications via mail. Please use our career site.
Så ansöker du Sista dag att ansöka är 2023-12-14
Klicka på denna länk för att göra din ansökan Omfattning Detta är ett heltidsjobb.
Arbetsgivare Volvo Business Services AB (org.nr 556029-5197)
405 08 GÖTEBORG
Arbetsplats Group Trucks Technology
Jobbnummer 8226122
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