Abstract
Numerical simulation of differential equation systems plays a major role in the understanding of how metabolic network models generate particular cellular functions. On the other hand, the classical and technical problems for stiff differential equations still remain to be solved, while many elegant algorithms have been presented. To relax the stiffness problem, we propose new practical methods: the gradual update of differential-algebraic equations based on gradual application of the steady-state approximation to stiff differential equations, and the gradual update of the initial values in differential-algebraic equations. These empirical methods show a high efficiency for simulating the steady-state solutions for the stiff differential equations that existing solvers alone cannot solve. They are effective in extending the applicability of dynamic simulation to biochemical network models.
Abbreviations
- GUDAE:
-
Gradual update of differential-algebraic equations
- GASSA:
-
Gradual application of the steady-state approximation to stiff differential equations
- GUIVDAE:
-
Gradual update of the initial values in differential-algebraic equations
- GUIVAE:
-
Gradual update of the initial values in algebraic equations
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Acknowledgments
This study is supported by the Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research (B) 2006, 18300098.
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Shiraishi, E., Maeda, K. & Kurata, H. A gradual update method for simulating the steady-state solution of stiff differential equations in metabolic circuits. Bioprocess Biosyst Eng 32, 283–288 (2009). https://doi.org/10.1007/s00449-008-0244-2
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DOI: https://doi.org/10.1007/s00449-008-0244-2