Injection in Boundary Layer and its Influence on Heat Transfer.

Authors

Samir Hanna, Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt.
Mahmoud Awad, Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt.Follow
Nabil Matta, Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt.
Rashad El-Badrawy, Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt.

Corresponding Author

Hanna, Samir

Subject Area

Mechanical Power Engineering

Article Type

Original Study

Abstract

An experimental investigation was performed to examine the effect of film cooling from different shape holes at the leading edge of a flat plate. The interaction of a heated jet with a deflecting flow has been performed. The secondary flow is introduced at different angles to the mainstream flow direction with single row of holes. Visualization studies using yarn tufts are reported. The influences of hole geometry; mainstream boundary layer thickness are described significant improvements in the film cooling effectiveness are observed by having the coolant and passages widened before the exit of the secondary fluid. "Normal-inclined" injection gives superior results.

Recommended Citation

Hanna, Samir; Awad, Mahmoud; Matta, Nabil; and El-Badrawy, Rashad (1981) "Injection in Boundary Layer and its Influence on Heat Transfer.," Mansoura Engineering Journal: Vol. 6 : Iss. 1 , Article 9.
Available at: https://doi.org/10.21608/bfemu.2021.181751