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  1. Article: Three dimensional analysis of the exhalation flow in the proximity of the mouth.

    Berlanga, F A / Gomez, P / Esteban, A / Liu, L / Nielsen, P V

    Heliyon

    2024  Volume 10, Issue 4, Page(s) e26283

    Abstract: The human exhalation flow is characterized in this work from the three-dimensional velocimetry results obtained by using the stereo particle image velocimetry (SPIV) measurement technique on the flow emitted from a realistic airway model. For this ... ...

    Abstract The human exhalation flow is characterized in this work from the three-dimensional velocimetry results obtained by using the stereo particle image velocimetry (SPIV) measurement technique on the flow emitted from a realistic airway model. For this purpose, the transient exhalation flow through the mouth of a person performing two different breaths corresponding to two metabolic rates, standing relaxed (SR) and walking active (WA), is emulated and studied. To reproduce the flow realistically, a detailed three-dimensional model obtained from computed tomography measurements on real subjects is used. To cope with the variability of the experimental data, a subsequent analysis of the results is performed using the TR-PIV (time resolved particle image velocimetry) technique. Exhalation produces a transient jet that becomes a puff when flow emission ends. Three-dimensional vector fields of the jet velocity are obtained in five equally spaced transverse planes up to a distance of Image 1 from the mouth at equally spaced time instants Image 2 which will be referred to as phases (
    Language English
    Publishing date 2024-02-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2024.e26283
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Experimental analysis of the air velocity and contaminant dispersion of human exhalation flows.

    Berlanga, F A / Olmedo, I / Ruiz de Adana, M

    Indoor air

    2017  Volume 27, Issue 4, Page(s) 803–815

    Abstract: Human exhalation flow is a potential source of pathogens that can constitute a cross-infection risk to people in indoor environments. Thus, it is important to investigate the characteristics of this flow, its development, area of influence, and the ... ...

    Abstract Human exhalation flow is a potential source of pathogens that can constitute a cross-infection risk to people in indoor environments. Thus, it is important to investigate the characteristics of this flow, its development, area of influence, and the diffusion of the exhaled contaminants. This paper uses phase-averaged particle image velocimetry together with a tracer gas (CO
    Language English
    Publishing date 2017-07
    Publishing country England
    Document type Journal Article
    ZDB-ID 1081722-0
    ISSN 1600-0668 ; 0905-6947
    ISSN (online) 1600-0668
    ISSN 0905-6947
    DOI 10.1111/ina.12357
    Database MEDical Literature Analysis and Retrieval System OnLINE

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