TY - JOUR T1 - Thermal Boundary Layer Analysis of Nanofluids in a Circular Tube AU - Kalbasi, Mansour AU - Azimi, Seyyed Shahabeddin JO - Journal of Engineering and Applied Sciences VL - 8 IS - 4 SP - 116 EP - 119 PY - 2013 DA - 2001/08/19 SN - 1816-949x DO - jeasci.2013.116.119 UR - https://makhillpublications.co/view-article.php?doi=jeasci.2013.116.119 KW - Heat transfer KW -nanofluid KW -laminar flow KW -fully developed region KW -velocity KW -Iran AB - In this research, thermal boundary layer in the forced convective heat transfer of nanofluids in fully developed laminar flow in a circular tube is considered in which thermal boundary layer grows. In thermal boundary layer temperature increases gradually. By analysis of conservation laws, it is concluded that the density of the base fluid has important role in the thermal boundary layer because both nanoparticle volume fraction and axial velocity of the nanofluid depend on it. Also to obtain temperature profile, the energy equation does not require to couple with momentum equations despite velocity has radial and axial distribution. ER -