Transients in pressure-imposed shearing of dense granular suspensions

Granular materials whether dry or immersed in fluid show dilation compaction depending upon the initial conditions, solid fraction and normal stress. Here we probe transient response of a dense granular suspension subjected to change applied stress under simple shear. In this aim, normal-stress-imposed discrete element particle simulations are developed considering contributions arising from drag induced on particles by phase. These pressure-imposed behaviors suspensions such as before reaching steady state following µ( J ) rheology. Less expectedly, behavior, particular height system function strain, can also be described assuming that follows rheology at all times.