Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
EFFECT OF THE AGING PROCESS ON THE PERFORMANCE OF ALOE VERA AS DRAG REDUCER
Submission Author:
Aline Bisi de Souza , ES
Co-Authors:
Aline Bisi de Souza, Jordana Oliveira Lyra, Renato Siqueira, Edson Soares
Presenter: Aline Bisi de Souza
doi://10.26678/ABCM.ENCIT2018.CIT18-0102
Abstract
The search for natural additives capable of reducing the friction factor is growing, due to their advantages in industrial, environmental and medical applications. The biopolymer extracted from Aloe vera is one of the additives that present good results in drag reduction. However, the plant aging process can affect the chemical composition and, therefore, its capacity to reduce drag. This article analyzes the influences of the ages on the capability to reduce drag in turbulent flows, to determine the best age for harvesting the plant to obtain the best results on drag reduction. The rheological characterization of the materials was done in a rheometer. The tests were also performed in a flow loop apparatus, which is closer to practical conditions. It was noticed that the plant age could influence the drag reduction, because the ages of intermediate and adult leaves presented higher efficiency than the young leaves.
Keywords
Turbulence, drag reduction, biopolymer, Aloe vera, Age
