Abstract
We examined the opaque phenomenon of surfactant solutions in an oscillating shear flow. Experiments of flow visualization were performed in a rectangular cavity channel constructed with glass plate. We used the mixtures of CTAB and NaSal as test fluids. From experimental results, it was found that emergence of opaqueness in shear flows was restricted within the neighborhood of a moving glass. Furthermore, in the opaque region, the streak lines synchronizing with an oscillating flow were observed.
