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Inertial effects on reactive particles advected by turbulence
R Reigada1, F Sagués, J M Sancho
1Departament de Química Física, Universitat de Barcelona, Avinguda Diagonal 647, Spain.
Summary
Particle inertia influences where particles collect in turbulent flow. This inertial bias can maintain or disrupt chemical reaction patterns, depending on flow conditions and particle density.
Area of Science:
- Fluid dynamics
- Chemical kinetics
- Particle transport
Background:
- Turbulent flows exhibit complex dynamics influencing particle behavior.
- Inertial effects on passive particles are crucial in multiphase flows.
- Chemical reactions can alter particle concentration patterns.
Purpose of the Study:
- To investigate the advection of inertial passive particles in 2D turbulent flow.
- To analyze the impact of particle inertia on preferential concentration.
- To examine how chemical reactions affect particle aggregates in turbulent flows.
Main Methods:
- Asymptotic analytical results.
- Numerical simulations of particle advection.
- Eulerian scheme for chemical reaction modeling.
Main Results:
- Inertial bias leads to preferential particle collection based on density.
- Stationary concentration patterns can be maintained by inertia, even with unfavorable reactions.
- Inertia can disrupt stationary patterns under favorable reaction conditions.
Conclusions:
- Particle inertia significantly impacts spatial distribution in turbulent flows.
- The interplay between inertia and chemical reactions creates complex concentration dynamics.
- Inertial effects can override or enhance chemical reaction influences on particle patterns.