  In present analysis, nanofluid transport near to a stagnation region over a
bidirectionally deforming surface is scrutinized. The region is embedded with
Darcy-Forchheimer medium which supports permeability. The porous matrix is
suspended with nanofluid, and surface is under the influence of inconsistent
heat source/sink. Using similarity functions, framed governing equations are
switched to a collection of ordinary differential equations. Output is procured
via optimal homotopy asymptotic method (OHAM). Basic notion of OHAM for a
vector differential set-up is presented along with required convergence
theorems. At different flow stagnation strengths, nanofluid behavior is
investigated with respect to variations in porosity parameter, Forchheimer
number, Brownian motion, stretching ratio, thermophoretic force, heat
source/sink and Schimdt number. Stagnation flow strength invert the pattern of
boundary layer profiles of primary velocity. Heat transfer has straightforward
relation with Forchheimer number when stagnation forces dominate stretching
forces
