Simulation Of The Air Flow Characteristic Of Solar Greenhouse

Solar greenhouse is one of the high gardening establishment for planting. Today, solar greenhouse is required not only to preserve heat in winter but also can control the temperature in summer. Solar greenhouse industry is a high input, high-tech, high-yield, high efficiency intensive market industries. It can take full advantage of the limitedray thermal resources through increased ability to regulate and control the subjective, as a weakening of the impact of climate unfavorable factors, and fundamentally change the traditional mode of production cultivation plots, significantly improving crop yields, and quality, cost-effective. Natural ventilation and mechanical ventilation are two main ways for the greenhouse cooling. Natural ventilation of solar greenhouse apply the majority of places in our world. For the reason, the way consume little energy. In China, energy sources is costly in agriculture production, first of all, natural ventilation of solar greenhouse has realism meaning.Two dimension model and three dimension model of solar greenhouse are simulatedused commercial software of CFD (Computational Fluid Dynamics), FLUENT 6.1 in this paper. The computation gives related computing velocity field, it is compared with the measured values. With results of simulation compared with experimental data have done, the feasibility and veracity of numerical simulation by software of Fluent to solar greenhouse is validated. Then internal air velocity distribution is forecasted, meantime stuffiness and ventilation of solar greenhouse are analysed. Besides, it is also discussed that the effect of the opening dormer and opening window. Meantime solar greenhouse with plants is numerically simulated using.The results indicate that the circle of the inside cover in stuffiness of solar greenhouse. Opening dormer and opening window have different the air flow characteristic in solar greenhouse, so different geography position choose different ways. Then internal air velocity distribution is forecasted.