aspen dynamic究竟为何物
精馏的稳态模拟做完了,现在想转成动态模拟。于是就照着教程做例题,后来发现我只知道aspen dynamic是做动态模拟,可以加控制点,但是我还是不明白它有何作用。难道是能够动态反应各变量的变化?如何判断收敛,如何判断该控制结构合适?请高手解惑,谢谢!用户手册里是这样说的:
The Aspen HYSYS dynamic model shares the same physical property packages as the steady state model. The dynamic model simulates the thermal, equilibrium, and reactive behavior of the chemical system in a similar manner as the steady state model.
On the other hand, the dynamic model uses a different set of conservation equations which account for changes occurring over time. The equations for material, energy, and composition balances include an additional “accumulation” term which is differentiated with respect to time. 学习了 其实我也想问aspen的其它配件怎么用 有没有高手 多给点资料或者给点指点吧 控制结构主要还是从理论上解决,动态模拟的好处在于仿真的优点是比较精确,而且同后者相比较,它适用于更多的设计类型。比较直观,但是它也存在着比较明显的缺点:首先是分析的速度比较慢;其次是它需要使用输入矢量,这使得它在分析的过程中有可能会遗漏一些关键路径(critical paths),因为输入矢量未必是对所有相关的路径都敏感的。
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