论文信息 - Computational Study of the Natural Ventilation Driven by Buoyancy Forces

Computational Study of the Natural Ventilation Driven by Buoyancy Forces

Abstract The ventilation behaviour of greenhouse structures when the wind speed is low and the “buoyancy effect” is the main driving force of the indoor air flow has been analysed with the use of Computational Fluid Dynamics. These numerical (CFD) simulations offer a detailed picture of the temperature spatial distribution and the air velocity field. These data can be used for analysing the contribution of every ventilator to the general ventilating performance of the greenhouse. As an example, the great importance of both roof and side ventilators for an efficient thermally driven ventilation was numerically demonstrated.

[1] George Papadakis,et al. Wind Induced Air Exchange Rates in a Greenhouse Tunnel with Continuous Side Openings , 1996 .

[2] G. Bot. Greenhouse climate: from physical processes to a dynamic model , 1983 .

[3] George Papadakis,et al. Soil energy balance analysis of a solar greenhouse , 1989 .

[4] Pietro Picuno,et al. Analysis of the efficiency of greenhouse ventilation using computational fluid dynamics , 1997 .

[5] T. Takakura,et al. Wind tunnel testing on airflow and temperature distribution of a naturally ventilated greenhouse. , 1984 .

[6] H. F. DeZwart. Determination of Direct Transmission of a Multispan Greenhouse Using Vector Algebra , 1993 .

[7] Pietro Picuno,et al. Computational analysis of ventilation in greenhouses at zero- and low-wind speeds. , 1997 .

[8] C. Stanghellini,et al. Transpiration of greenhouse crops : an aid to climate management , 1987 .

[9] G. Papadakis,et al. Experimental investigation and modelling of heat and mass transfer between a tomato crop and the greenhouse environment , 1994 .