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Abstract IDABSTRACT-03fe
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The article is novel and interesting. The model has been properly explained. The methodology is correct. The results are significant. Figures and tables are adequate. The conclusions contain relevant information.

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Is this the right topic for this paper?*Yes
What type of presentation would you consider most appropiate for this work?*Oral
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Valuation note - Reviewer 2The quality of the poster/oral presentation will be evaluated during the conference by a comittee.
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SECCIÓN DE GESTIÓN
Corrector 1
  • Ana María Blanco
Corrector 2
  • Tao Yang
StatusAccepted
Type of Presentation - Final decisionOral
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CORRESPONDING AUTHOR
NamePhilipp
SurnameOstmann
Telephone0241 80 49802
EmailEmail hidden; Javascript is required.
AffiliationRWTH Aachen University, E.ON Energy Research Center, Institute for Energy Efficient Buildings and Indoor Climate
CountryGermany
CityAachen


OTHER AUTHORS' DATA
Does the abstract accounts with other authors?Yes
Please indicate the number of co-authors3
Co-author 1
Name (Co-author 1)Lisa Krüger
Telephone (Co-author 1)+492418049760
Email (Co-author 1)Email hidden; Javascript is required.
Affiliation (Co-author 1)RWTH Aachen University, E.ON Energy Research Center, Institute for Energy Efficient Buildings and Indoor Climate
City (Co-author 1)Aachen
Country (Co-author 1)Germany
Co-author 2
Name (Co-author 2)Martin Kremer
Telephone (Co-author 2)+492418049898
Email (Co-author 2)Email hidden; Javascript is required.
City (Co-author 2)Aachen
Country (Co-author 2)Germany
Affiliation (Co-author 2)RWTH Aachen University, E.ON Energy Research Center, Institute for Energy Efficient Buildings and Indoor Climate
Co-author 3
Name (Co-author 3)Dirk Müller
Telephone (Co-author 3)+492418049760
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City (Co-author 3)Aachen
Country (Co-author 3)Germany
Affiliation (Co-author 3)RWTH Aachen University, E.ON Energy Research Center, Institute for Energy Efficient Buildings and Indoor Climate
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PRESENTERPlease, indicate who among the authors of the article will be the presenter. Please note that at least the presenter should register at the conference. Papers without a registered author by May 30 will not be included in the book of proceedings.
The presenter will be the corresponding author:Yes
FULL PAPER INFORMATION
TitleContribution of Geometric Features on the Aeroacoustic Behaviour of a Slot Diffuser
TopicD. Computational Thermo-Fluid Dynamics (CFD).
Preferred type of presentation. (The organizing committee may change the type of presentation, at the request of the reviewers)Oral Presentation
Keywordsaeroacoustics, aeroacoustics analogy, flow simulation, slot diffuser


ABSTRACT
Abstract - (Max. 250 words)

Sound generated by air diffusers is a factor that affects a productive working environment and therefore plays an important role in the operation of HVAC systems. A reliable prediction of sound sources and levels offers the potential to minimise noise emissions by modifying geometric features in the early design state of air diffusers.

The research field of aeroacoustics yielded many approaches to compute not only sound propagation but also sound generation in airflows. Based on the prominent Lighthill analogy, the Curle analogy and Proudman analogy were developed.

In this work, we investigate a commercially available slot diffuser. The airflow through the diffuser is calculated using steady-state simulations at diffuser outlet velocities of 4, 6 and 8 m/s, which correspond to approximately 200, 300 and 400 m³/h. To evaluate the influence of the solid surfaces we compute the emission according to Curle’s analogy. We further use Proudman’s analogy to assess the effect of the freestream. Based on the flow simulation geometric optimisations are proposed.

By design, a steady-state simulation is not able to capture time-resolved phenomena, such as periodic vortex shedding. But since they are far less demanding in regards to computational resources, we can simulate a wider variety of flow conditions. By identifying the primary sound source regions, we not only increase the awareness towards the impact of certain flow structures such as big vortex systems, but also provide a first indicator for possible design optimisations.

The computed flow field is to be validated with near-field Laser-Doppler-Anemometry (LDA) measurements.

PUBLICATION OPTIONS
HTML BlockAfter the conference, selected papers (by the reviewers) will be recommended for possible publication in special issues of some scientific journals (https://ecos2023.com/journal-publication). Note that they have to be reviewed based on journal regulations.
All registered and presented papers will be published in a Book of Proceedings. For this issue, two options are possible:
A. Book 1: Book of Proceedings with ISBN, but just as a pdf file, which will be made available to participants at the Conference. With option A your work will not be accessible on-line.
B. Book 2: Online Book of Proceedings, with the possibility of being indexed in SCOPUS, where each paper will have a doi.
We choose:Book 2 (on-line+SCOPUS)
FULL PAPER
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FINAL PAPER
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