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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A simple approach to improve the robustness of equation-oriented simulators: Multilinear look-up table interpolators

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Furlan, Felipe Fernando [1] ; de Andrade Lino, Anderson Rodrigo [2] ; Matugi, Karina [1] ; Goncalves Cruz, Antonio Jose [1, 2] ; Secchi, Argimiro Resende [3] ; Giordano, Roberto de Campos [1, 2]
Total Authors: 6
[1] Univ Fed Sao Carlos UFSCar, Chem Engn Grad Program, Rodovia Washington Luis SP 310, Km 235, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos UFSCar, Dept Chem Engn, UFSCar, Rodovia Washington Luis SP 310, Km 235, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Fed Rio de Janeiro, UFRJ, COPPE, Chem Engn Grad Program, Cidade Univ, BR-21941972 Rio De Janeiro, RJ - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Computers & Chemical Engineering; v. 86, p. 1-4, MAR 4 2016.
Web of Science Citations: 2

Equation-oriented simulators have some advantages over the modular sequential ones, but improvements are still necessary to deal with nonlinearities, while preserving the robustness of the solver. Linear approximations and/or surrogate models can be used in place of nonlinear models, but the loss of predictive accuracy may be a drawback. An alternative to circumvent this problem is the use of grid-based look-up tables for interpolating responses from rigorous models. This methodology was integrated in an equation-oriented simulator (EMSO). A case study involving the production of bioethanol from sugarcane is used to demonstrate the robustness of this approach. Look-up tables replaced the models of two distillation column trains and of the cellulose hydrolysis reactor. These models were included into the global process and an optimization problem aiming at the maximum production of ethanol was successfully solved by a PSO algorithm varying the solid mass fraction in the hydrolysis reactor. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 09/13325-0 - Development of an integrated environment for simulation and static optimization of the production of ethanol from sugarcane bagasse through a biochemical route
Grantee:Felipe Fernando Furlan
Support type: Scholarships in Brazil - Master
FAPESP's process: 08/56246-0 - Bioprocess Systems Engineering (BSE) applied to the production of bioethanol from sugarcane bagasse
Grantee:Roberto de Campos Giordano
Support type: Program for Research on Bioenergy (BIOEN) - Thematic Grants