**Author details**

layer profile flattens and the skin friction coefficient increases. This increase has no great effect on the total drag because it depends essentially on the form of drag. The contribution of the friction drag is negligible. This result is in accord with the

*for U = 5 m/s; (a) velocity profiles; (b) boundary layer thicknesses; (c) parietal friction coefficients.*

*; 10<sup>3</sup>*

*; 1,5.10<sup>3</sup>*

*; 2.10<sup>3</sup> )*

*Parameters of boundary layer for different values of suction rate (vp/U = 0; 5.10<sup>4</sup>*

This article has an objective to provide the analytical solutions of profile of boundary layer without and with uniform suction and to contribute to a better description of the structure of the flat plate to control the boundary layer. So, we presented the analytical resolution of the boundary layer equations by using the Bianchini integral method. This leads to new theoretical approximations, with the Error and/or Lambert functions. This result allows us to bring out the analytical

The new boundary layer theories were validated with literature results, as well

as, with results obtained from numerical simulations using CFD Fluent.

literature.

**130**

**Figure 8.**

*Aerodynamics*

**4. Conclusion**

expressions of several boundary layer features.

Chedhli Hafien<sup>1</sup> \*, Adnen Bourehla<sup>2</sup> and Mounir Bouzaiane<sup>1</sup>

1 Laboratory of Mechanics of Fluids, Faculty of Science of Tunis, Tunis Cedex, Tunisia

2 Aviation School of Borj El-Amri, Tunisia

\*Address all correspondence to: chedhli.hafien@gmail.com

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
