PFMS · Pattern Formation in Microorganism Suspensions: Shear and Confinement
FP7 — People (Marie Curie Actions)
- Duration
- 2012-09-04 → 2014-09-03
- EU contribution
- €209,033
- Participants
- 1
- Scheme
- MC-IEF
Lines connect the coordinator with its partners.
Results in brief
Pattern Formation in Microorganism Suspensions: Shear and Confinement
This report summarizes research activities and academic achievement of the fellow, Dr. Yongyun Hwang, from 1st September 2012 to 8th October 2013, by carrying out the project `Pattern formation in microorganism suspensions: shear and confinement'. The project leads the fellow to a permanent academic position, thus it is terminated in the middle of progress. The research activities for the period have been focused on understanding the role of external shear flow in a collective behaviour of swimming gyrotactic microorganism suspensions by performing mathematical and computational analysis of the state-of-the-art continuum model. A summary of the research activities is as follows: 1. Gaining fundamental understanding and prediction on the role of uniform shear in bioconvection pattern in gyrotactic swimming microorganism suspensions; 2. Elucidating the physical mechanisms of the blip instability observed in downflowing gyrotactic swimming microorganism suspensions (currently in progress) The research activities leads the fellow to the following academic achievement: 1. Two scientific papers are expected in peer-review journals, one of which is already accepted and the other is currently submitted. In particular, the first paper will appear in the Journal of Fluid Mechanics, the leading journal in fluid mechanics, 2. Attended four international and domestic conferences to interact with internationally renowned academics in the field, 3. Gave four invited talks at academic institutions such as University of York, Imperial College London, University of Manchester, and University of Cambridge, 4. Have been established research activities in the field of biological fluid mechanics and have been developing collaboration with academics at University of York (M. A. Bees), University of Oxford (Dr. W. M. Durham) and University of Cambridge (Dr. O. A. Croze). 5. Gained a permanent academic position at Imperial College London. For further information, see the attached.
Data: CORDIS, © European Union
Project objective
Microorganisms are present in almost every part of temperate aqueous environments, and they are heavily involved in pathoenic infection, digestion, reproduction and carbon dioxide capture and mixing in the oceans. Therefore, understanding their motility, collective dynamics and interaction with the environment is a key issue to overcome important challenges of our time such as collapse of ecological systems, global warming, and environmental pollution.The objective of this proposal is to contribute to our understanding of the behavior of swimming microorganisms, focusing particularly on their collective dynamics caused by interaction with surrounding hydrodynamic conditions, flow shear and confinement. Two state-of-the-art collective behaviors of microorganisms are considered: bioconvection and particle-stress-driven instability, and interaction of the collective dyanamics with shear flows and confinement will be analyzed using the-state-of-the-art linear and nonlinear stability theories, which are the candidate's particular expertise. A part of the theoretical prediction, particularly for particle-stress-driven instability, will also be verified by conducting a laboratory experiment.The work program in this proposal is designed to complete post doctoral training of the candidate, who has been trained within the European network. Interdisciplinary nature of the project will greatly improve the candidate's future mobility cutting across fluid mechanics, biophysics and applied mathematics. The results of this project is expected to provide a solid basis for understanding and predicting the collective dynamics of swimming microorganisms, and it will significantly contribute to the European excellence of environmental and energy science.""
Original text from CORDIS.
Participants
- THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIVERSITY OF CAMBRIDGE · CAMBRIDGECoordinatorUnited Kingdom
Links
Data: CORDIS, © European Union