Abstract
It has been reported that malted rice solutions cause the drag reduction phenomena in turbulent flow range. The drag reduction is classified in the Type-B for the friction factor of a circular pipe flow because of biopolymer solutions. Although it is an important problem to be solved saving energy for the hydraulic transportation of a pipeline system awaiting solution, some problem lays in the practical application for it. In this paper, we clarified the effect of the culture condition on the drag reduction phenomena by using a pipe friction measurement system.
