Background -Flow Considerations w x Wake Stagnation point Separation point Boundary layer Favorable Adverse pressuregradient pressure gradient aP aP 0 x ax Wake Heat Transfer Su Yongkang School of Mechanical EngineeringHeat Transfer Su Yongkang School of Mechanical Engineering # 6 Background – Flow Considerations Favorable pressure gradient  0   x P Adverse pressure gradient  0   x P Stagnation point Separation point Wake