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Energy exchange by convection in a closed greenhouse a pipe heating system: a CFD analysis

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2015 ASABE Annual International Meeting  152190826.(doi:10.13031/aim.20152190826)
Authors:   Jorge Flores-Velázquez, Abraham Rojano-Aguilar, Adriana Rojas-Rishor, Waldo Ojeda-Bustamante
Keywords:   Thermal profile, Navier-stokes equations, velocity vectors, greenhouse. Abstract

Climate control inside greenhouses are one of the most important cost in the production process. However in many regions with mild winters, low temperatures are only in a specific data and periods of time, in this case the simple natural convection can be applied and the atmosphere of greenhouse heating. The main objective of this work is to analyze the effects of natural convection under various temperature gradients and the relationship among physical and mathematical vortex nonlinearities, based on the Boussinesq model defined on a piece smooth bounded domain with the classical theory of convection. Computational fluid dynamics (CFD) is used as an analytical tool to demonstrate the behavior of the wind in a closed greenhouse as a result of natural convection generate by heating. Tomato crop is also simulated as a porous zone with a source term in the balance equation.

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