Investigation of Incompressible Rough-Wall Boundary Layer Flows.

Authors

Samir Hanna, Assistant Professor., Electrical Power Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.
Berge Djebedjian, Mechanical Power Engineering Department., Faculty of Engineering., El-Mansoura University., El-Mansoura 35516., Egypt.Follow

Subject Area

Mechanical Power Engineering

Article Type

Original Study

Abstract

COLES [1] suggested to represent the velocity distribution in turbulent boundary layers with adverse pressure gradient over smooth surface by a linear combination of two universal functions.one is the well known law of the wall, the other the law of the wake which is characterised by the profile at a point of separation or reattachment. The aims of this investigation are to modify Coles velocity distribution to perform the calculations for turbulent boundary layers over smooth and rough surfaces and also to study analytically the various boundary layer parameters and surface roughness function derived from the modified velocity distribution and experimental results with flows over rough surfaces given in [10].

Recommended Citation

Hanna, Samir and Djebedjian, Berge (2021) "Investigation of Incompressible Rough-Wall Boundary Layer Flows.," Mansoura Engineering Journal: Vol. 14 : Iss. 1 , Article 13.
Available at: https://doi.org/10.21608/bfemu.2021.171895