The Effect of Temperature and Electric Field on the Behavior of Electrorheological Fluids
Publish place: 14th Annual Conference of Mechanical Engineering
Publish Year: 1385
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISME14_524
تاریخ نمایه سازی: 1 فروردین 1386
Abstract:
An Electrorheological (ER) process occurs when the viscosity of fluid with dispersed particles is modified by the application of an electric field. The Electrorheological flow able dispersed fluids can be currently used for fixing of materials responding to mechanical loads and, as working media for dampers and dielectric actuators.
The present investigation has been undertaken with the aim of studing the parameters that effect on the apparent viscosity of low–concentration ER-fluid (diatomite in transformer oil). Results demonstrate increases in the viscosity by applying electric field. It is shown that the viscosity behavior can be reasonably modeled as a power –low fluid, with the viscosity equal to a consistency index, K, multiplied by the shear rate raised to the power n-1. Results indicate that both the consistency index K and the exponent n are influenced by voltage and temperature, where K has linear and n has exponential relation with temperature. The variation of the apparent viscosity versus temperature can be determined by these relations.
Keywords:
Electrorheological Fluid –Viscosity – Electric field – Temperature
Authors
Mohammad Ayani
Assistant Prof. Department of Mechanical Engineering Ferdowsi University of Mashhad
Hosseini
B.S. Student Department of Mechanical Engineering Ferdowsi University of Mashhad
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