Homotopy Based Backtracking Method for Large-scale Process Simulations with Load Variation
Homotopy Based Backtracking Method for Large-scale Process Simulations with Load Variation
复制标题
基于同伦的回溯方法用于负载变化的大规模过程模拟
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Shao, Zhi-Jiang
中科院分区：
文献类型：
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作者：
Zhu, Ling-Yu;Chen, Zhi-Qiang;Qian, Ji-Xin;Chen, Xi;Shao, Zhi-Jiang
A homotopy-based backtracking method (HBM) for large-scale process simulation with load variations was proposed to improve the convergency of nonlinear algebraic equation solver. The fluctuated load variable was regarded as a homotopy parameter to make the auxiliary homotopy problem easily converge. In this paper,the homotopy parameter is searched by a backtracking method,which greatly improves the searching efficiency. With the Open Object Model Framework (OOMF) script language,the proposed HBM can be connected to solvers in Aspen Plus for the process simulation. The eraluation of the HBM were conducted via the simulation calculation of a large scale ethylene separation process with load variations. It is shown that the proposed HBM greatly enhances the convergency performance. It consistently converges to an optimal solution until it encounters an unsurpassable operation boundary. The backtracking method is also effective in searching homotopy parameter,solving auxiliary homotopy problem and analyzing flowsheeting bottleneck.
