Foam pattern drift in a vibrating flask

The flow and mechanics of granular materials have been widely studied in re cent years, and the results are readily applied to many fields. This paper investigated experimentally the flow patterns of sand movement and the corr esponding foam pattern drift in a vibrating flask. Experimental results sho wed that foam pattern drift is affected by the vibration conditions, the ge ometry of the foam pattern. the locations at which the foam pattern is embe dded and the modulus of elasticity of the flask.