Publications


Title : Convective and Periodic Motion Driven by a Chemical Wave

Language: English
Type: Article
Authors: Hiroyuki Kitahata, Ryoichi Aihara, Nobuyuki Magome and Kenichi Yoshikawa
Journal: Journal of Chemical Physics
ISSN: 0021-9606
Volume: 116
Number: 13
Month: 4
Year: 2002
Actual year: 2002
Pages: 5666-5672
doi:   10.1063/1.1456023
Abstract: The generation of convective flow by a chemical wave was studied experimentally on a mm-sized droplet of Belousov-Zhabotinsky (BZ) reaction medium. A propagating chemical wave causes a transient increase in interfacial tension, and this local change in interfacial tension induces convection. The observed flow profile was reproduced with a numerical simulation by introducing the transient increase in interfacial tension to a modified Navier-Stokes equation coupled with a chemical kinetic equation; a modified Oregonator. We also observed the periodic motion of a BZ droplet floating on an oil phase. Such periodic motion is attributed to the rhythmic change in interfacial tension. The observed periodic convective motion coupled with a chemical reaction is discussed in relation to chemo-mechanical energy transduction under isothermal conditions. (C) 2002 American Institute of Physics.

"Convective and Periodic Motion Driven by a Chemical Wave"

Hiroyuki Kitahata, Ryoichi Aihara, Nobuyuki Magome and Kenichi Yoshikawa, Journal of Chemical Physics, 116, 5666-5672 (2002)