Pouya Derayat - Islamic Azad University, South Tehran Branch
Yahya Sheikhnejad - Amirkabir University of Technology

Ferroconvection in a horizontal tube under axial magnetic field with temperature dependentviscosity is investigated numerically in this work. It is assumed that incompressible laminarferrofluid flow through the axisymmetric, constant temperature tube. Moreover magnetic fielddistribution is increased linearly in the axial direction and magnetization of ferrofluid has notemperature dependency. Finally it is found that magnetic field can highly reduce pressure lossto help pump to work under lower load and better thermal conductivity of ferrofluids improveconvective heat transfer in developing region.

laminar ferroconvection, axisymmetric tube, temperature dependent viscosity