Effects of natural light and ventilation on the 3D body heat distribution of tomatoes

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Maintaining an appropriate temperature level around the tomatoes in the greenhouse is essential for high quality production. However, in summer, the temperature level around the tomato is usually unclear except by using a high-precision temperature imager. To solve this problem, the thermal performance of the 3D (three-dimensional) tomato model built on the basis of SolidWorks was studied by computational fluid dynamics (CFD) simulations.

To assess the effect of temperature distribution around the tomato, a simplified 3D numerical model of the tomato was first validated by a data set of field measurements. Light intensity and indoor ventilation were considered the main environmental factors in the Venlo greenhouse, and the thermal stratification around tomatoes at different times of the day was studied in more detail. The numerical results illustrated the different temperature distributions around the body of tomatoes under different radiation intensities. It was found that the ventilation can obviously adjust the temperature gradient around the tomato and alleviate the effect of high temperature, especially in summer.

Proper ventilation could create a thermal environment conducive to growing tomatoes. This study clearly demonstrated the 3D temperature distribution around tomatoes, which is beneficial to provide the reference for accurate 3D tomato temperature sensing and proper thermal environment design.

Read the full research at www.researchgate.net.

Yu, Guanghui & Zhang, Shanhong & Li, Shuai & Zhang, Minshu & Benli, Hüseyin & Wang, Yang. (2022). Numerical investigation of the effects of natural light and ventilation on the 3D body heat distribution of tomato in a Venlo greenhouse. Information processing in agriculture. 10.1016/j.inpa.2022.05.006.

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