Barriers to front propagation in laminar, three-dimensional fluid flows.
basic_science · Level V
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- Record sourced from PubMed, PMID 29776060.
- Also identified by DOI 10.1103/PhysRevE.97.033111.
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Abstract
We present experiments on one-way barriers that block reaction fronts in a fully three-dimensional (3D) fluid flow. Fluorescent Belousov-Zhabotinsky reaction fronts are imaged with laser-scanning in a laminar, overlapping vortex flow. The barriers are analyzed with a 3D extension to burning invariant manifold (BIM) theory that was previously applied to two-dimensional advection-reaction-diffusion processes. We discover tube and sheet barriers that guide the front evolution. The experimentally determined barriers are explained by BIMs calculated from a model of the flow.