LAMINAR BOUNDARY LAYER CONTROL ABOUT A SPHERE IN A STREAM
El-Refaie, M., Kemry, M., Halawa, M. (1989). LAMINAR BOUNDARY LAYER CONTROL ABOUT A SPHERE IN A STREAM. EKB Journal Management System, 3(ASAT Conference 4-6 April 1989 , CAIRO), 317-329. doi: 10.21608/asat.1989.25878
M. E. El-Refaie; M. M. Kemry; M. A. Halawa. "LAMINAR BOUNDARY LAYER CONTROL ABOUT A SPHERE IN A STREAM". EKB Journal Management System, 3, ASAT Conference 4-6 April 1989 , CAIRO, 1989, 317-329. doi: 10.21608/asat.1989.25878
El-Refaie, M., Kemry, M., Halawa, M. (1989). 'LAMINAR BOUNDARY LAYER CONTROL ABOUT A SPHERE IN A STREAM', EKB Journal Management System, 3(ASAT Conference 4-6 April 1989 , CAIRO), pp. 317-329. doi: 10.21608/asat.1989.25878
El-Refaie, M., Kemry, M., Halawa, M. LAMINAR BOUNDARY LAYER CONTROL ABOUT A SPHERE IN A STREAM. EKB Journal Management System, 1989; 3(ASAT Conference 4-6 April 1989 , CAIRO): 317-329. doi: 10.21608/asat.1989.25878

LAMINAR BOUNDARY LAYER CONTROL ABOUT A SPHERE IN A STREAM

International Conference on Aerospace Sciences and Aviation Technology
Article 17, Volume 3, ASAT Conference 4-6 April 1989 , CAIRO, April 1989, Page 317-329  XML PDF (2.79 MB)
Document Type: Original Article
DOI: 10.21608/asat.1989.25878
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Authors
M. E. El-Refaie1; M. M. Kemry2; M. A. Halawa3
1Professor, Mechanical Engineering Department, Al-Azhar University, Cairo, EGYPT.
2Associate professor, Mechanical Engineering Department, Al-Azhar University, Cairo, EGYPT.
3Assistant lecturer, Mechanical Engineering Department, Al-Azhar University, Cairo, EGYPT.
Abstract
This paper investigates the effect of uniform suction on the characteris-tics of the developing laminar boundary layer about a sphere which is subjected to a steady stream of fluid. The study includes the developing meridional velocity profiles, the separation angle, the wall shear stress and the frictional drag coefficient (CD). Making limitation of suction region on sphere surface leads to reduction in frictional drag. However, it reduces the separation angle (es) with slight effect. The present regime succeeded in obtaining numerical results up to θ= 180°.
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