Distribution of wall shear stress for a bubbly flow in rod assembly

The work is devoted to the experimental study of the wall shear stress in the vertical assembly of rods in a square arrangement for a bubble flow. The measurements were carried out using the electrodiffusion technique. The data obtained during the experiment show that the void fraction has a significant effect on the flow structure near the walls of the rods. The change in wall shear stress with distance from the spacer grid does not occur monotonously, in contrast to the single-phase case.