Central Upwind Scheme for Solving Multivariate Cell Population Balance Models

Shahzadi Mubeen ur Rehman, Nadia Kiran, Shamsul Qamar

Department of Mathematics, COMSATS Institute of Information Technology, Islamabad, Pakistan.

DOI: 10.4236/am.2014.58110                

Abstract

Microbial cultures are comprised of heterogeneous cells that differ according to their size and intracellular concentrations of DNA, proteins and other constituents. Because of the included level of details, multi-variable cell population balance models (PBMs) offer the most general way to describe the complicated phenomena associated with cell growth, substrate consumption and product formation. For that reason, solving and understanding of such models are essential to predict and control cell growth in the processes of biotechnological interest. Such models typically consist of a partial integro-differential equation for describing cell growth and an ordinary integro-differential equation for representing substrate consumption. However, the involved mathematical complexities make their numerical solutions challenging for the given numerical scheme. In this article, the central upwind scheme is applied to solve the single-variate and bivariate cell population balance models considering equal and unequal partitioning of cellular materials. The validity of the developed algorithms is verified through several case studies. It was found that the suggested scheme is more reliable and effective.

Keywords

Cell Population Balance, Cell Growth, Substrate Consumption, Central Upwind Scheme, Equal and Unequal Partitioning of Cells

Conflicts of Interest

The authors declare no conflicts of interest.

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