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本文对有压非恒定流调压井系统,其中包括调压井,进水隧洞,压力管道三部分的变态模型设计进行了系统的研究.提出了模型比尺的相关性概念,研究表明,仅从涌波方程推导相似条件往往产生顾此失彼问题.文中还提出了变态模型比尺的参数表示法,通过该方法可实现变态模型比尺的优化选择.研究还指出,当调压井的比尺小于1/25时,整个系统完全正态模型是难以实现的.得出的结论表明,不仅可以,而且应该使变态模型比尺同时满足涌波方程,水锤波方程和压力管道水弹性方程的相似条件.本文还提供了一个实际工程项目的变态模型设计比尺的优化选择.
This paper systematically studies the design of metamorphic model with pressure non-constant flow surge shaft system, including surge tank, water inlet tunnel and pressure pipe. The concept of the correlation of the model scale is proposed. The research shows that it is often wrong to derive similar conditions only from the surge wave equation. In the paper, the parametric representation of metamorphosis model scale is also proposed. By this method, the optimal selection of scale of metamorphosis model can be realized. The study also pointed out that when the regulator well scale is less than 1/25, the entire system is completely normal model is difficult to achieve. The conclusion drawn is that it not only can, but also make the metamorphosis model meet the similar conditions of the Chung-wave equation, the water-hammer wave equation and the hydraulic elasticity equation of the pressure pipe at the same time. This article also provides an optimized selection of scale design rules for an actual project.