Modelling and simulation of the near-wall velocity of a turbulent ceiling attached plane jet after its impingement with the corner

Guangyu Cao*, Mika Ruponen, Risto Paavilainen, Jarek Kurnitski

*Tämän työn vastaava kirjoittaja

    Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

    22 Sitaatiot (Scopus)

    Abstrakti

    At present, ceiling-mounted diffusers are very popular for indoor air distribution, particularly in offices, owing to greater efficiency in the distribution of the air supply and a more comfortable indoor environment. The objective of this study is to construct an effective model to design the indoor airflow of an attached plane jet after its impingement with the corner in a room. In this study, a full-scale test facility was set up to obtain detailed experimental data. One commercial CFD tool, CFX 11.0, was used to simulate the air velocity distribution of an attached plane air jet bounded by the ceiling and an insulated wall. One semi-empirical model was also constructed to predict the impingement jet velocity. The results show that bout the semi-empirical model and CFX 11.0 were able to predict the maximum velocity of an impinging jet at low Reynolds numbers, 1000 and 2000, with an inaccuracy of ±11%. However, the semi-empirical model could be more conveniently used to predict the maximum jet velocity decay after its impingement the corner in a room than CFD simulation in terms of accuracy and the time required to design the indoor airflow pattern.

    AlkuperäiskieliEnglanti
    Sivut489-500
    Sivumäärä12
    JulkaisuBuilding and Environment
    Vuosikerta46
    Numero2
    DOI - pysyväislinkit
    TilaJulkaistu - helmikuuta 2011
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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