Loading...
Search for:
influence-of-magnetic-field
0.008 seconds
Thermal Conductivity of Fe2O3 and Fe3O4 Magnetic Nanofluids Under the Influence of Magnetic Field
, Article International Journal of Thermophysics ; Volume 36, Issue 10-11 , September , 2015 , Pages 2720-2739 ; 0195928X (ISSN) ; Goharkhah, M ; Ashjaee, M ; Shafii, M. B ; Sharif University of Technology
Springer New York LLC
2015
Abstract
In this paper, the thermal conductivity of water-based hematite Fe2O3 and magnetite Fe3O4 nanofluids have been investigated in the absence and presence of a uniform magnetic field. The experiments have been performed in the volume concentration range of 0 % to 4.8 % and the temperature range of 20∘C to 60∘C. The effects of the particle volume fraction, temperature, and magnetic field strength on the thermal conductivity have been analyzed. Results show that the thermal conductivity of iron oxide nanofluids has a direct relation with the particle volume fraction and temperature, without the presence of a magnetic field. But surprisingly, when the magnetic field is applied, it is observed that...
Convective-heat transfer of magnetic-sensitive nanofluids in the presence of rotating magnetic field
, Article Applied Thermal Engineering ; Volume 116 , 2017 , Pages 329-343 ; 13594311 (ISSN) ; Molaei Dehkordi, A ; Shahrokhi, M ; Abbasi, Z ; Sharif University of Technology
Elsevier Ltd
2017
Abstract
In this work, forced-convection heat transfer of magnetic-sensitive nanofluids has been investigated in the presence of rotating magnetic field. In this regard, the laminar, Newtonian, incompressible, and two-dimensional (2D) fluid flow in a horizontal duct subject to constant wall temperature boundary condition was modeled. Moreover, the fluid was supposed to be non-electrical conductive and the magnetic field source comprised of two time varying components perpendicular to each other. Influences of magnetic field intensity and frequency, inlet fluid velocity, and spin viscosity on the forced-convection heat transfer of the magnetic nanofluids were investigated. It was found that the...
Controlled drug delivery using the magnetic nanoparticles in non-Newtonian blood vessels
, Article Alexandria Engineering Journal ; 2020 ; Bantan, R. A. R ; Aalizadeh, F ; Alimoradi, A ; Sharif University of Technology
Elsevier B.V
2020
Abstract
Fouling in blood flow is very common and may decrease the blood flow in human body and lead to critical health issues. Upon injury in a blood vessel, the body's defensive system triggers a process to create a blood clot called “Thrombus”, which prevents bleeding. Blood clots are formed by a combination of blood cells, platelets, and fibrins. In this study, we investigate a controlled drug delivery using the magnetic nanoparticles in blood vessels under the influence of magnetic fields. For this purpose the Maxwell and the Navier-Stokes equations for the system are solved. In contrary to the previous studies it is assumed that the blood is a non-Newtonian fluid. The number of particles has...