ON THE PROBLEM OF FILTRATION TO AN IMPERFECT GALLERY IN A PRESSURELESS BED

The problem of plane steady-state fi ltration in a pressureless bed to an imperfect gallery in the presence of evaporation from the fl ow free surface is considered. To study such type of fl ow, a mixed boundary-value problem of the theory of analytical functions is formulated and solved with application of the Polubarinova-Kochina method. Based on the model suggested, an algorithm for computing the discharge of the gallery and the ordinate of free surface emergence to the impermeable screen is developed. A detailed hydrodynamic analysis of the infl uence of all physical parameters of the model on the desired fi ltration characteristics is given.
   
Author:  É. N. Bereslavskii and L. M. Dudina
Keywords:  fi ltration, pressureless bed, imperfect gallery, groundwater, free surface, evaporation, complex velocity, conformal mappings, Polubarinova-Kochina method
Page:  220