Hostname: page-component-74656f9884-npj9w Total loading time: 0 Render date: 2026-11-09T19:57:53.914Z Has data issue: false hasContentIssue false

Mass Transport/Diffusion and Surface Reaction Process with Lattice Boltzmann

Published online by Cambridge University Press:  20 August 2015

Giuseppe De Prisco*
Affiliation:
Exa Corporation, 55 Network Drive, Burlington, Massachusetts 01773, USA Ingrain Inc, 3733 Westheimer Road, Houston, Texas 77027, USA
Xiaowen Shan*
Affiliation:
Exa Corporation, 55 Network Drive, Burlington, Massachusetts 01773, USA
*
Corresponding author.Email:deprisco@ingrainrocks.com
Get access

Abstract

Multi-component flow with chemical reactions is a common problem in different industrial applications: the mixing chamber of a reaction injection molding (RIM) machine; the dynamics of diesel soot particles interacting with a porous-ceramic particulate filter; reactive transport in porous media; bio-chemical processes involving enzyme-catalyzed kinetics. In all these cases, mass diffusion/convection and wall or volume chemical interactions among components play an important role. In the present paper we underline the importance of diffusion/convection/reaction mechanisms in bio-chemical processes using the Lattice Boltzmann (LB) technique. The bio-application where we studied diffusion/convection/reaction mechanisms is the quorum-sensing pathway for the bio-synthesis of the AI-2, a molecule that allows the bacteria to launch a coordinated attack on a host immune system (see [9,10] for more details of the bio-application). The overall goal is to create a micro-device to screen potential drugs that inhibit AI-2 bio-synthesis. The Michaelis-Menten saturation kinetic model is implemented at the reactive surface and the results are shown in terms of two dimensionless numbers: Damkohler (Da) and Peclet (Pe) number. For high Pe number a small conversion of reactants into products is obtained at the reactive surface, but the overall flux of products is high; moreover, a fast saturation of the conversion of reactants to products is obtained for high Da numbers. The trade-off for setting the Pe and Da numbers depends on the specific application and the technologies used in the micro-device (e.g., sensitivity of the detector, cost of reactants).

Information

Type
Research Article
Copyright
Copyright © Global Science Press Limited 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable