Effect of Magnetic Field Intensity on Hydrodynamic Entrance Length and Nusselt number
Volume Title: 1
Faculty of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan, Iran
The present study is a numerical investigation of the laminar flow and convective heat transfer of water/copper ferrofluid inside a horizontal tube in the presence of a uniform magnetic field. the effect of magnetic field intensity on hydrodynamic entrance length and Nusselt number was investigated. All studies were performed at Reynolds number of 100, the volume fraction of 5% and Hartmann numbers of 0, 20, 50, 80. The results obtained indicated that with the increase of Hartmann number, The thickness of the boundary layer decreases and hydrodynamic entrance length increases. Also with the increase of Hartmann number, Nusselt number increases and wall temperature decreases.