Model simulation is an important way to study the effects of climate change on *** assessment is subject to a range of uncertainties because of either incomplete knowledge or model technical uncertainties,impeding eff...
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Model simulation is an important way to study the effects of climate change on *** assessment is subject to a range of uncertainties because of either incomplete knowledge or model technical uncertainties,impeding effective decision-making to climate *** the basis of uncertainties in the impact assessment at different levels,this article systematically summarizes the sources and propagation of uncertainty in the assessment of the effect of climate change on agriculture in terms of the climate projection,the assessment process,and the crop models linking to climate ***,techniques and methods focusing on different levels and sources of uncertainty and uncertainty propagation are introduced,and shortcomings and insufficiencies in uncertainty processing are pointed ***,in terms of how to accurately assess the effect of climate change on agriculture,improvements to further decrease potential uncertainty are suggested.
在流体中自由飘落之薄板具有丰富的动态行为,但仍缺乏完整的理论阐释.在最近的研究,Andersen et al.不仅进行矩形截面薄板在流体中自由飘落之实验,更在相同的物理参数设定下,类比椭圆截面薄板在二维流场自由飘落之动态行为.并针对翻滚...
详细信息
在流体中自由飘落之薄板具有丰富的动态行为,但仍缺乏完整的理论阐释.在最近的研究,Andersen et al.不仅进行矩形截面薄板在流体中自由飘落之实验,更在相同的物理参数设定下,类比椭圆截面薄板在二维流场自由飘落之动态行为.并针对翻滚的例子,比较实验与模拟的平均速度与轨迹倾斜角度.在本文中,使用改良直接压力修正法(modified direct-forcing IB pressureconccting method)模拟薄板在二维流场自由飘落.并在实验的物理参数设定下,分别与Andersen et al.的矩形和椭圆截面薄板作比较.
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