Considerable effort has been expended in an effort to understand
how granular materials behave during flow.
To extend the current understanding, I have conducted experiments that
involve a small amount of
a granular medium in a series of horizontal rotating cylinders. With
proper combination of humidity, grain size,
mass of the granular medium and the rotation rate of the
cylinder, I discovered a number of interesting wave patterns.
Among these were states in which the granular front displays a spatially
In addition to my experimental work, I have developed a
theoretical framework that predicts the observed
flow patterns followed by the numerical simulations. Furthermore,
inspiried by the similarity between our lab scale
fingering patterns and the aeolian geomorphology observed in nature, I
extended my model to a continum
logical model to describe the ripple formations in nature.