TY - JOUR
T1 - Drag Reduction of a Pipe Flow Using Nata de Coco Suspensions
AU - Ogata, Satoshi
AU - Gunawan, null
AU - Warashina, Jun
AU - Yanuar, null
N1 - Publisher Copyright:
© 2014 Satoshi Ogata et al.
PY - 2014
Y1 - 2014
N2 - The addition of drag-reducing agents to reduce pipe friction loss has attracted attention as a method to conserve energy. In addition to reducing drag, these agents are required to have a low environmental load and conserve natural resources. Therefore, naturally occurring biopolymer additives, which are considered to have a low environmental load, have recently received much attention. Here we focused on nata de coco, a type of biopolymer that exhibits low mechanical degradation, and found that it reduced drag by up to 25% at a concentration of 50 ppm. With respect to the drag reduction (DR) mechanism, we investigated the relation between DR phenomena and the fiber structure of nata de coco by visualization. As a result, we found that the DR effect appeared only when a network of nata de coco fibers was formed in the suspension. In addition, DR increased as the size of the network of nata de coco fibers increased.
AB - The addition of drag-reducing agents to reduce pipe friction loss has attracted attention as a method to conserve energy. In addition to reducing drag, these agents are required to have a low environmental load and conserve natural resources. Therefore, naturally occurring biopolymer additives, which are considered to have a low environmental load, have recently received much attention. Here we focused on nata de coco, a type of biopolymer that exhibits low mechanical degradation, and found that it reduced drag by up to 25% at a concentration of 50 ppm. With respect to the drag reduction (DR) mechanism, we investigated the relation between DR phenomena and the fiber structure of nata de coco by visualization. As a result, we found that the DR effect appeared only when a network of nata de coco fibers was formed in the suspension. In addition, DR increased as the size of the network of nata de coco fibers increased.
UR - http://www.scopus.com/inward/record.url?scp=84934986442&partnerID=8YFLogxK
U2 - 10.1155/2014/651260
DO - 10.1155/2014/651260
M3 - Article
AN - SCOPUS:84934986442
SN - 1687-8132
VL - 2014
JO - Advances in Mechanical Engineering
JF - Advances in Mechanical Engineering
M1 - 651260
ER -