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Updated: Dec 31, 2025
13:02
Three-dimensional Particle Tracking Velocimetry for Turbulence Applications: Case of a Jet Flow
Published on: February 27, 2016
12.8K
Front tracking velocimetry in advection-reaction-diffusion systems
Thomas D Nevins1, Douglas H Kelley2
1Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA.
Chaos (Woodbury, N.Y.)
|January 8, 2020
Summary
We developed a new algorithm to measure reaction front velocity in flowing systems. This method quantifies chemical and flow contributions to spreading, improving understanding of reactive scalar transport.
Area of Science:
- Fluid dynamics
- Chemical kinetics
- Transport phenomena
Background:
- Reactive scalar spreading is governed by advection-reaction-diffusion processes.
- Reaction fronts at boundaries of reacted/unreacted regions quantify spreading.
- Existing methods struggle to track fronts accurately in complex flow fields.
Purpose of the Study:
- To present an algorithm for measuring reaction front velocity in advection-reaction-diffusion systems.
- To decompose front velocity into chemical dynamics and flow contributions.
- To validate the algorithm in simulations and experimental flows.
Main Methods:
- Algorithm development for localized reaction front velocity measurement.
- Validation using two simulation scenarios.
- Application to complex experimental flows with varying time and length scales.
Main Results:
- The algorithm accurately measures localized front speed, separating chemical and flow components.
- Validated successful tracking of reaction fronts across time steps in experimental flows.
- Observed a correlation between chemical speed and flow speed across diverse experimental conditions.
Conclusions:
- The new algorithm reliably quantifies reaction front velocity in flowing systems.
- It provides insights into the interplay between chemical reactions and fluid flow.
- This method advances the study of reactive transport phenomena in complex environments.
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