Published August 2019 | Version v1
Journal article Metadata-only

Impact of oscillating magnetic field on the thermal-conductivity of water-Fe3O4 and water-Fe3O4/CNT ferro-fluids: Experimental study

Creators

  • 1. Jiangsu Collaborative Innovation Center of Intelligent Mining Equipment, China University of Mining and Technology, Xuzhou 210008 (China)
  • 2. School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116 (China)
  • 3. Public Authority for Applied Education and Training (PAAET) College of Technological Studies (CTS) Automotive and Marine Engineering Department, Shuwaikh 70654 (Kuwait)
  • 4. Department of Mechanical Engineering, Kermanshah University of Technology, Kermanshah (Iran, Islamic Republic of)
  • 5. Faculty of Engineering, Soran University, Soran 44008, Kurdistan Region (Iraq)
  • 6. Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad (Iran, Islamic Republic of)
  • 7. Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City (Viet Nam)
  • 8. Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City (Viet Nam)

Description

The aim of this experimental assessment is to examine the influence of an oscillating magnetic field on the thermal-conductivity of a water-Fe3O4 and water-Fe3O4/CNT ferro-fluids. Magnetic field is created by an electromagnet composed of a core made of ferrite and two copper windings. The impacts of magnetic field strength and frequency are also examined and the findings are compared with those of the constant magnetic field. The outcomes revealed that the pattern of thermal-conductivity in the attendance of a constant magnetic field is initially ascending and then descending. In addition, it was found that the descending trend of the thermal-conductivity can be prevented by using an oscillating magnetic field. Moreover, the results depicted that the most effective oscillating magnetic field has a frequency equal to the inverse of one minute less than time to reach the highest thermal-conductivity in the attendance of constant magnetic field. According to the results, the highest increase in the average thermal-conductivity of the water-Fe3O4 and water-Fe3O4/CNT ferro-fluids in the attendance of an oscillating magnetic field of 700 Gauss in comparison to the case of a constant magnetic field of 700 Gauss, is respectively 22.62 and 24.25%.

Additional details

Identifiers

DOI
10.1016/j.jmmm.2019.04.042;
PII
S0304885319305645;

Publishing Information

Journal Title
Journal of Magnetism and Magnetic Materials
Journal Volume
484
Journal Page Range
p. 258-265
ISSN
0304-8853
CODEN
JMMMDC

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
55023234
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
COPPER; ELECTROMAGNETS; FERRITE; FERRITES; FLUIDS; IRON OXIDES; MAGNETIC FIELDS; THERMAL CONDUCTIVITY
Descriptors DEC
ALLOYS; CARBON ADDITIONS; CHALCOGENIDES; ELECTRICAL EQUIPMENT; ELEMENTS; EQUIPMENT; FERRIMAGNETIC MATERIALS; IRON ALLOYS; IRON COMPOUNDS; MAGNETIC MATERIALS; MAGNETS; MATERIALS; METALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2019 Elsevier B.V. All rights reserved.