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本文从能量转化观点阐述了明渠非均匀流产生的原因和过程,以及从能量观点分析明渠非均流水面曲线的方法和步驟。一、明渠水流运动与各种物体的机械运动相类似,取决于外力一包括动力和阻力两个对立面一相互作用的结果。在明渠水流中,一般情况下其动力为重力。重力与阻力的对立消长引起水质点的机械能(以其比能为特征)的变化,从而导致水流运动状态的变化。
This paper elaborates the reason and process of non-uniform flow in open channel from energy conversion point of view and the methods and steps of analyzing non-uniform flow curve of open channel from energy point of view. First, the open channel flow movement and a variety of objects similar to the mechanical movement, depending on the external force, including a dynamic and resistance of the two opposite the result of an interaction. In the open channel flow, under normal circumstances its power is gravity. The opposition of gravity and resistance causes changes in the mechanical energy of the water-mass point (characterized by its specific energy), resulting in changes in the state of water flow.