Iranian Association of Chemical Engineering (IAChE) Iranian Journal of Chemical Engineering (IJChE) 1735-5397 9 1 2012 01 01 Study of Boundary Layer Convective Heat Transfer with Low Pressure Gradient Over a Flat Plate Via He’s Homotopy Perturbation Method 33 39 10244 EN M. Fathizadeh Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic, Tehran, Iran Journal Article 2015 07 28 The boundary layer convective heat transfer equations with low pressure gradient over a flat plate are solved using Homotopy Perturbation Method (HPM), which is one of the semi-exact methods. The nonlinear equations of momentum and energy solved simultaneously via HPM are in good agreement with results obtained from numerical methods. Using this method, a general equation in terms of Pr number and pressure gradient (λ) is derived which can be used to investigate velocity and temperature profiles in the boundary layer. https://www.ijche.com/article_10244_7a55fb8503583f7451544623e3f75f93.pdf