Effects of Side Vents and Span Numbers on Wind-Induced Natural Ventilation of a Gothic Multi-Span Greenhouse

DOI 被引用文献2件
  • KACIRA Murat
    Department of Agricultural Machinery, Faculty of Agriculture, Harran University Department of Agricultural Environment Engineering, National Institute for Rural Engineering
  • SASE Sadanori
    Department of Agricultural Environment Engineering, National Institute for Rural Engineering
  • OKUSHIMA Limi
    Department of Agricultural Environment Engineering, National Institute for Rural Engineering

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説明

In this paper, the effects of wind speed, side ventilators and span numbers on gothic type multi-span greenhouse natural ventilation were studied by numerical simulation using the Computational Fluid Dynamics (CFD) approach. The realizable k-ε model was used for the turbulence model in the simulations. The results showed that the maximum greenhouse ventilation rate was achieved when both side and roof vents were used for ventilation. Without the existence of buoyancy effect in the computations, it was found that the ventilation rate increased linearly with the external wind speed in all the cases studied. The ratio of the opening of the ventilator area to the greenhouse floor area, 9.6%, was found to be small compared to the recommended ratios of 15-25%. The results showed that a significant reduction in ventilation rate was determined as the number of spans was increased and an exponential decay explained the relationship between the ventilation rate and the number of spans.

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詳細情報 詳細情報について

  • CRID
    1390001204701310848
  • NII論文ID
    130003396671
  • DOI
    10.6090/jarq.38.227
  • ISSN
    21858896
    00213551
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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