University of Cambridge > Talks.cam > trrp2's list > Simulating Biofilm Growth and Detachment in Porous Media using the Lattice Boltzmann Method

Simulating Biofilm Growth and Detachment in Porous Media using the Lattice Boltzmann Method

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Thomas Pintelon.

This talk has been canceled/deleted

To simulate the complexity of biofilm growth on geometrically complex support structures, 3D pore-scale models are necessary. The lattice Boltzmann (LB) method was used to solve the required coupled hydrodynamics and mass transfer equations because of its proven high performance in simulating these processes in arbitrary complex geometries. The fluid velocity, pressure and solute concentrations fields calculated with LB were coupled with an individual based biofilm growth model (IbM). In order to simulate shear induced biomass detachment, a fast marching level set (FMLS) method has been implemented that models the propagation of the biofilm/liquid interface with a speed proportional to this adjacent shear stress field. This talk will discuss how and why the presented approach is most applicable to biofilm growth in porous media. The influence of hydrodynamics and nutrient mass transfer on biofilm growth and development in model complex porous media was considered and discussed by comparing the simulation results for constant pressure drop (CPD) and constant volumetric flow rate (CVF) operation modes for the provision of nutrients to the system. It is demonstrated that the resulting biofilm growth and permeability reduction is a complex competition between nutrient supply and detachment.

This talk is part of the trrp2's list series.

Tell a friend about this talk:

This talk is included in these lists:

This talk is not included in any other list

Note that ex-directory lists are not shown.

 

© 2006-2024 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity