ANALYSIS STUDY OF BOUNDARY LAYER OF AIR FLOWING ON A FLAT PLATE

Abstract

When the real liquid flows through a solid object or solid wall, the particles of the liquid stick to the boundary and a non-slip state occurs. In this paper, a practical and theoretical study was conducted to calculate and show the effect of fluid velocity on the thickness of the boundary layer and the local skin friction coefficient and a comparison between the theoretical and experimental results of laminar flow and turbulence along the flat plate at (5,10,15,20, cm). The results showed that the coefficient of skin friction decreases with the increase in the velocity of the liquid and that the velocity increases until it is constant (1m/sec) at the dimension x = 20 cm. The distribution of the velocity, friction coefficient, and thickness of the boundary layer are obtained analytically and experimentally and compared with the previously reported results, where good agreements are observed also the results also showed that there is an error ratio between the theoretical and practical values