Heat transfer in a three-dimensional nanofluid-cooled microcooler under the influence of magnetic field
In the present study, the fluid flow and heat transfer of water-AL2O3 nanofluid through a three-dimensional microcooler with rectangular flow passages are investigated numerically in the presence of a uniform magnetic field. The magnetic field is applied in the transverse direction (i.e. normal to the flow direction). All simulations are performed for Hartman numbers within the range of 0 to 30 for a fixed Reynolds number of Re=100 and the volume fraction of Ø=0.02. The results are presented in terms of the Poiseuille number (f.ReDh), the dimensionless maximum axial velocity (Umax), and the Nusselt number (Nu) as well as contours of velocity and temperature fields. The results reveal that the pressure drop and heat transfer increase with the increase of the Hartman number. In addition to having a uniform temperature distribution in the fluid part, the presence of the magnetic field makes the temperature distribution within the solid part of the micro-channel more uniform which enables removing higher heat fluxes within the safe temperature limit.
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.