International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2570

Full Length Research Paper

Aerodynamic study of greenhouses using computational fluid dynamics

E. Rico-García1*, G. M. Soto-Zarazúa1, O. Alatorre-Jácome1, G. A. De la Torre-Gea1and D. J. Gomez-Melendez2
  1Department of Biosystems, School of Engineering, Queretaro State University, C.U. Cerro de las Campanas, Querétaro, México. 2Deparment of Mechatronics, Polytechnic Queretaro University. Carretera Estatal 420 S/N, El Marqués, Querétaro, México.
Email: [email protected], [email protected]

  •  Accepted: 19 October 2011
  •  Published: 09 November 2011

Abstract

 

In the last decade, computational fluid dynamics (CFD) has been used to evaluate ventilation on agricultural facilities, mainly on greenhouses. However, there is lack of information on aerodynamic design on greenhouses. In this work, a CFD model has been used to evaluate wind forces over plastic greenhouse covers. Two different greenhouse geometries plane and round, were studied. The effect of wind velocity on the pressure profile over the greenhouses was evaluated. Results showed that almost the entirely roof is subjected to suction forces for both geometries. For the round geometry, these forces are bigger than for plane geometry. However, a bigger damage is observed on plane geometries. From the results, it can be concluded that flapping is the cause of plastic tearing.

 

Key words: Negative pressure, plastic covers, plastic damage.