AI Article Synopsis
- The study investigates how autocatalytic reactions can create solitary wave patterns in chemical systems, where the wave moves at a constant speed while maintaining a steady concentration profile.
- Experimental and numerical methods, particularly lattice Bhatnagar-Gross-Krook simulations, are used to analyze the impact of fluid flow on the reaction between iodate and arsenous acid in specific configurations, like cylindrical tubes and Hele-Shaw cells.
- The findings reveal the presence of solitary waves with unique concentration shapes and confirm theoretical predictions about different regimes of wave behavior in the system.
Article Abstract
Autocatalytic reaction between reacted and unreacted species may propagate as solitary waves, namely, at a constant front velocity and with a stationary concentration profile, resulting from a balance between molecular diffusion and chemical reaction. The effect of advective flow on the autocatalytic reaction between iodate and arsenous acid in cylindrical tubes and Hele-Shaw cells is analyzed experimentally and numerically using lattice Bhatnagar-Gross-Krook simulations. We do observe the existence of solitary waves with concentration profiles exhibiting a cusp and we delineate the eikonal and mixing regimes recently predicted.
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| http://dx.doi.org/10.1103/PhysRevLett.90.128302 | DOI Listing |
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