@article {156,
	title = {Liquid clustering and capillary pressure in granular media},
	journal = {Journal of Fluid Mechanics},
	volume = {762},
	year = {2015},
	month = {Jan-2015},
	pages = {Article Number: R5},
	abstract = {<p>By means of extensive lattice Boltzmann simulations, we investigate the process of growth and coalescence of liquid clusters in a granular material as the amount of liquid increases. A homogeneous grain\&ndash;liquid mixture is obtained by means of capillary condensation, thus providing meaningful statistics on the liquid distribution inside the granular material. The tensile stress carried by the grains as a function of the amount of condensed liquid reveals four distinct states, with a peak stress occurring at the transition from a primary coalescence process, where the cohesive strength is carried mostly by the grains, to a secondary process governed by the increase of the liquid cluster volumes. We show that the evolution of capillary states is correctly captured by a simple model accounting for the competing effects of the Laplace pressure and grain\&ndash;liquid interface.</p>
},
	issn = {0022-1120},
	doi = {10.1017/jfm.2014.676},
	author = {Jean-Yves Delenne and Vincent Richefeu and Farhang Radja{\"\i}}
}
