K. Matthiessen et al., INFLUENCE OF SURFACE-TENSION CHANGES ON HYDRODYNAMIC FLOW-INDUCED BY TRAVELING CHEMICAL WAVES, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 53(6), 1996, pp. 6056-6060
Chemical waves in a thin layer of a Belousov-Zhabotinsky reaction solu
tion induce convective flow in the reaction medium. The mechanism of t
his chemically driven convection is investigated with space-resolved v
elocimetry, and simulated numerically solving modified Oregonator mode
l equations and the Navier-Stokes equation. To decide whether the flow
is driven by surface tension gradients or density gradients the resul
ts of the simulations are compared with experimental data. Analysis of
the vertical distribution of the horizontal flow velocity suggests th
at in the mechanism of flow generation surface effects are dominant.