ISHS Acta Horticulturae 534: International Conference and British-Israeli Workshop on Greenhouse Techniques towards the 3rd Millennium
GREENHOUSE TURBULENCE FLOW NUMERICAL SIMULATION |
| Authors: | A. Shklyar, A. Arbel |
| Keywords: | Greenhouse, ventilation, turbulence flow, numerical simulation |
| Abstract:
The purpose of the present paper is to develop a two-dimensional numerical model for predicting internal and external flow patterns and their interaction in a modern greenhouse. Large dimensions usually characterize the greenhouse; in effect, a large Reynolds number. The turbulence flow in the domain is described by the Reynolds equations. The Reynolds stresses were modeled according to the eddy viscosity concept, which introduces the turbulent viscosity by the k-epsilon high Reynolds model. An iterative numerical procedure in general curvilinear coordinates systems was applied to the present physical system. The hybrid central/upwind differences were used for the convective terms and a central difference for the diffusion terms. The grid was constructed by X_Genie++ for Sun using SunOs. The developed numerical model predicts a recirculating zone, wake and pressure distribution in the external and internal flows. | |
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