Analytical Solution - Laminar Flow(Contd dv≡ ax Define new dependent and independent variables f()≡ ll、/ n≡yVl2/ The momentum equation can be rewritten as And the boundary conditions are df f(o)=0 and Heat Transfer Su Yongkang School of Mechanical EngineeringHeat Transfer Su Yongkang School of Mechanical Engineering # 10 Analytical Solution – Laminar Flow (Cont’d) • Define new dependent and independent variables, • The momentum equation can be rewritten as • And the boundary conditions are y u     x v    −  and    u x u f / ( )     y u /x   2 0 2 2 3 3 + =  d d f f d d f (0) 0 0 = = = f d df   =1 = d df and