Boundary Layer Similarity Parameters(Contd From the non-dimensionalized boundary layer equations, dimensionless groups can be seen Reynolds#ReL≡ Prandtl# PP≡ Substituting gives the boundary layer equations Continuity k au au aP X-momentum ax ReL ay 2 OX Energy aT *aT 1 a-T R eL Pr #4 Heat Transfer Su Yongkang School of Mechanical EngineeringHeat Transfer Su Yongkang School of Mechanical Engineering # 4 Boundary Layer Similarity Parameters (Cont’d) • From the non-dimensionalized boundary layer equations, dimensionless groups can be seen Reynolds # Prandtl # Substituting gives the boundary layer equations:  VL Re L  0 * * * * =   +   y v x u 2* 2 * * * * * * * * * Re 1 y u x P y u v x u u L   +   = −   +   Re Pr 1 2* 2 * * * * * * * y T y T v x T u L    =   +   Continuity: x-momentum: Energy:   Pr 