An analytical solution for the equation modeling the process of capillary absorption into nanotubes has been obtained. Initial-value classical and two-point problems have been researched and the relations allowing a determination of the height of rise and the velocity of movement of liquid in capillaries have been found. On the basis of the obtained laws, computing experiments have been conducted and a comparative analysis of the results has been presented.

capillary, mathematical model, analytical solution, dimensional effects, computing results.