CFD modelling of the microclimate of a cultivated greenhouse: A validation study between experimental and numerical results

Author:

TIGAMPO Soumaïla1ORCID,KOOLI Sami2ORCID,SALAH Nizar Ben3ORCID,FOUDHIL Walid4ORCID,ERRAIS Reda5ORCID,JABRALLAH Sadok Ben4ORCID,SAMBOU Vincent1ORCID

Affiliation:

1. Water, Energy, Environment and Industrial Processes Laboratory (LE3PI), Ecole Supérieure Polytechnique de Dakar of Cheikh Anta Diop University, Dakar-Fann, 5085, Senegal

2. Research and Technology Center of Energy, Thermal Processes Laboratory, Hammam-Lif, Tunis, 1008, Tunisia

3. Laboratory of Mechanics, Materials and Processes, Ecole Nationale Supérieure d'Ingénieur de Tunis, 1008, Tunisia

4. Laboratory for Energy, Heat and Mass Transfer, Faculty of Sciences of Bizerte, University of Carthage, 1054, Tunisia

5. Institute of Agronomy and Veterinary Hassan II, Rabat, Morocco

Abstract

In this work, we present the validation of a numerical model of a greenhouse thermally in-sulated on three sides with a tomato crop. A CFD software (Ansys-Fluent) was used to solve the numerical model. The discrete ordinate model was included to solve the radiative trans-fer equation. The results of the numerical model were compared with the values of air tem-perature observations at different points in the greenhouse. Good agreement was obtained between the simulated and measured values, with coefficients of determination R2 = 0.77, R2 = 0.84, R2 = 0.99, and R2 = 0.89 for the temperatures of the points 10 cm, 80 cm, and 210 cm above the ground and the average temperature in the greenhouse, respectively. A third-order polynomial curve was drawn between the simulated and measured values of relative humidity in the greenhouse. These R2 values are 0.9786 and 0.7165, the simulated and measured relative humidity, respectively. The simulation results showed low velocity values with an average of 0.525 m/s located between 1.5 m and 2 m from the ground.

Publisher

Journal of Thermal Engineering

Subject

Fluid Flow and Transfer Processes,Energy Engineering and Power Technology,Building and Construction

Reference33 articles.

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4. [3] Food and Agriculture Organization. La faim ne diminue toujours pas dans le monde depuis trois ans et l’obésité est toujours à la hausse - Rapport des Nations Unies. New York. Available from: http://www.fao.org/news/story/fr/item/1201888/icode/ Last Accessed Date: 15.07.2019.

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