cemek, bilal ondokuz mayis university - faculty of agriculture, Samsun, Turkey , atiş, aslıhan black sea agricultural research institute, Samsun, Turkey , küçüktopcu, erdem ondokuz mayis university - faculty of agriculture, Samsun, Turkey

Evaluation of temperature distribution in different greenhouse models using computational fluid dynamics (CFD)

33996

Areas of air inlet and outlet openings, orientation of openings, height difference between air inlet and outlet openings, wind direction, greenhouse geometry, and type of plant grown are among the many factors that should be taken into consideration in designing an effective ventilation system for greenhouses. In this study, five different model plastic greenhouses with different sidewall heights, air inlet and outlet opening areas and roof shapes were used to evaluate the ventilation efficiencies and they were compared with a conventional type of the region. A computational fluid dynamics (CFD) program was used to evaluate the behavior of the internal environment (internal flow rate and temperature distributions) and natural ventilation rates for all model greenhouses and a conventional greenhouse involved in the study. External wind speeds of 0.5, 1, and 2 ms-1 were used in the simulations for all conditions. The results of simulations and experimental studies were evaluated and used for recommendation of a better greenhouse model for this region. CFD software “FLUENT” was used to determine the effectiveness of greenhouse ventilation system and k-ɛ Renormalization Group (RNG) turbulence model was used in solutions.

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Computational fluid. dynamics. Natural ventilation. Greenhouse. Samsun

Anadolu Journal Of Agricultural Sciences

63