Consequences of convection-radiation interaction for magnetite-water nanofluid flow due to a moving plate

• Main Authors: Mushtaq Ammar, Khan Junaid Ahmad, Mustafa Meraj, Hayat Tasawar, Alsaedi Ahmed
• Format: Article
• Language: English
• Published: VINCA Institute of Nuclear Sciences 2018-01-01
• Series: Thermal Science
• Subjects: ferrofluid; heat transfer; numerical treatment; non-linear radiation; Blasius problem
• Online Access: http://www.doiserbia.nb.rs/img/doi/0354-9836/2018/0354-98361600212M.pdf

Present paper examines the boundary-layer flow of magnetic nanofluid over a radiative plate moving in a uniform parallel free stream. Water is considered as the base fluid which is being filled with magnetite-Fe3O4 nanoparticles. Energy balance equation is formulated with non-linear radiation heat flux. Mathematical analysis is carried out through the famous Tiwari and Das model. Similarity approach is utilized to construct self-similar form of the governing differential system. Numerical computations are made through standard shooting method. Ferrofluid velocity is predicted to enhance upon increasing the nanoparticle volume fraction which contradicts with the available literature for non-magnetic nanofluids. It is found that Fe3O4-water ferrofluid has superior heat transfer coefficient than pure water. Results reveal that consideration of magnetic nanoparticles in water leads to better absorption of incident solar radiations. The well-known Blasius and Sakiadis flows are also explicitly analyzed from the present model.