In this region, the flow accelerates but tries to decelerate, so next to the boundary, in the boundary layer region, shear stresses or friction, try to decelerate the skin friction flow, help the pressure gradient flow.
இந்த region-ல flow accelerate ஆனாலும் friction decelerate பண்ண try பண்ணும், அதனால boundary-க்கு பக்கத்துல, boundary layer region-ல, shear stresses அல்லது friction, skin friction flow-அ decelerate பண்ண try பண்ணும், pressure gradient flow-க்கு help பண்ணும்.