A CFD based automatic method for compartment model development. (6th April 2019)

• Record Type: Journal Article
• Authors: Tajsoleiman, Tannaz; Spann, Robert; Bach, Christian; Gernaey, Krist V.; Huusom, Jakob Kjøbsted; Krühne, Ulrich
• Is Part Of: Computers & chemical engineering. Volume 123(2019)
• Page Start: 236
• Page End: 245
• Publication Date: 2019-04-06
• Subjects: Fluid dynamics -- CFD based compartment model -- Automated compartmentalization -- Mixing; Chemical engineering -- Data processing -- Periodicals; 660.0285
• DOI: 10.1016/j.compchemeng.2018.12.015
• Languages: English
• ISSNs: 0098-1354

Abstract

Highlights: A new compartmentalization method is introduced with a focus on cylindrical-shaped systems. The automated platform for characterizing compartments is presented. The method was evaluated through a case study of a 700 L stirred tank bioreactor. The influence of the operating condition on the compartments' characteristics is studied. Abstract: Computational fluid dynamics (CFD) is a powerful tool for quantitative prediction of fluid dependent properties in a finite volume. However, the complexity of solving the momentum balances and the continuity equations at each element of the discretized geometry can easily lead to an expensive computational task. Compartment modelling is a potential alternative to speed up the calculation, which is however reached at the expense of the level of accuracy. The most important factor in optimizing a compartment model (CM) concerning the accuracy and the computational time is the quality of the chosen compartments to represent the critical gradients. This work presents a new automated compartmentalization method to characterize an improved network of compartments derived from initial detailed CFD results, with a focus on cylindrical-shaped systems. This method was evaluated with a case study of a 700 L stirred tank bioreactor by estimating the mixing performance and demonstrating its high efficiency.