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The Domain Dependence of Chemotaxis in a Two-Dimensional Turbulent Flow

Abstract Presented is a study on the chemotaxis reaction process and its relation with flow topology. The effect of coherent structures in turbulent flows is characterized by studying nutrient uptake and the advantage that is received from motile bacteria over other non-motile bacteria. Variability is found to be dependent on the initial location of scalar impurity and can be tied to Lagrangian coherent structures through recent advances in the identification of finite-time transport barriers. Advantage is relatively small for initial nutrient found within high stretching regions of the flow, and nutrient within elliptic structures provide the greatest advantage for motile species. How the flow field and the relevant flow topology lead to such a rel... (more)
Created Date 2015
Contributor Jones, Kimberly (Author) / Tang, Wenbo (Advisor) / Kang, Yun (Committee member) / Jones, Donald (Committee member) / Arizona State University (Publisher)
Subject Applied mathematics / Mathematics / Chemotaxis / Flow Topology / FTLE / Lagrangian Coherent Structures / Turbulence
Type Masters Thesis
Extent 20 pages
Language English
Reuse Permissions All Rights Reserved
Note Masters Thesis Mathematics 2015
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS

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Description Dissertation/Thesis