SURFACE ROUGHNESS EFFECTS ON FLOW BETWEEN STATIONARY- AND ROTATING DISCS
EL-Batran, A., EL-Kadi, M., Hewedy, H., Khalifa, B. (1991). SURFACE ROUGHNESS EFFECTS ON FLOW BETWEEN STATIONARY- AND ROTATING DISCS. EKB Journal Management System, 4(ASAT CONFLENCE 14-16 May 1991 , CAIRO), 145-154. doi: 10.21608/asat.1991.25673
A. I. EL-Batran; M. EL-Kadi; H. I.I. Hewedy; B. A. Khalifa. "SURFACE ROUGHNESS EFFECTS ON FLOW BETWEEN STATIONARY- AND ROTATING DISCS". EKB Journal Management System, 4, ASAT CONFLENCE 14-16 May 1991 , CAIRO, 1991, 145-154. doi: 10.21608/asat.1991.25673
EL-Batran, A., EL-Kadi, M., Hewedy, H., Khalifa, B. (1991). 'SURFACE ROUGHNESS EFFECTS ON FLOW BETWEEN STATIONARY- AND ROTATING DISCS', EKB Journal Management System, 4(ASAT CONFLENCE 14-16 May 1991 , CAIRO), pp. 145-154. doi: 10.21608/asat.1991.25673
EL-Batran, A., EL-Kadi, M., Hewedy, H., Khalifa, B. SURFACE ROUGHNESS EFFECTS ON FLOW BETWEEN STATIONARY- AND ROTATING DISCS. EKB Journal Management System, 1991; 4(ASAT CONFLENCE 14-16 May 1991 , CAIRO): 145-154. doi: 10.21608/asat.1991.25673

SURFACE ROUGHNESS EFFECTS ON FLOW BETWEEN STATIONARY- AND ROTATING DISCS

International Conference on Aerospace Sciences and Aviation Technology
Article 13, Volume 4, ASAT CONFLENCE 14-16 May 1991 , CAIRO, May 1991, Page 145-154  XML PDF (2.02 MB)
Document Type: Original Article
DOI: 10.21608/asat.1991.25673
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Authors
A. I. EL-Batran1; M. EL-Kadi2; H. I.I. Hewedy3; B. A. Khalifa3
1Graduate student, of Mechanical Power Engineering, Faculty of Engineering &Tech , Henoufia University, Shebin El-Noia, Egypt .
2Lecturer, of Mechanical Power Engineering, Faculty of Engineering &Tech , Henoufia University, Shebin El-Noia, Egypt .
3Professor, Department of Mechanical Power Engineering, Faculty of Engineering &Tech , Henoufia University, Shebin El-Noia, Egypt .
Abstract
The turbulent outward fluid flow between stationary and a rotating disc enclosed by a cylindrical housing has been investigated experimentally . This type of flow occurs in many applications of engineering interests . Most of the flows enco-untered in practice are turbulent specially in turbo-machinery. The effect of surface roughness on the friet.ional voment of the rotating disc as well as on the radial pressure distributi-ons has been investigated for different relative roughness ratios of the rotating disc CR/k),16005CR/k35I6401 . Here k is the mean particle diameter of the used grain size and R is the outer disc radius . The flow is investigated at a dimensionless gap height CID of 10.013 SCHmh/10.15 0.401, mass flow coefficient CCw er 11.0x103 5CCwapWeR35 4.2x103 and rotational Reynolds number (Re) of 13x1055 (Re•peR2/0)5. 1.21x 1061. Radial pressure and frictional moment for rough discs are compared with the experimental results obtained on smooth rotating discs . The results have showed that the surface roughness affects strongly upon the radial pressure distribution, the frictional moment and the axial thrust force .
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