亀裂内を流れる水の圧力損失

抄録

It is important to know the pressure drop between an injection well and a production well in the extraction of thermal energy by forced injection of water through the artificially fractured crack in the hot rock. The pressure drops of water flowing unidirectionally through a slit packed with particles were measured with varying flow rates, diameters of packed particles and void fractions. The result indicates that the measured values of the pressure drop do not agree with the calculated values by the existing equations for the packed bed such as Ergun's equation. New empirical equations for the friction factor and the permeability in the slit packed with particles are presented.