INVESTIGATION OF TWO DIMENSIONAL WAKE PRESSURES DOWNSTREAM OF PERFORATED PLATES | ||
| JES. Journal of Engineering Sciences | ||
| Article 18, Volume 34, No 5, September and October 2006, Pages 1605-1612 PDF (504.83 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.21608/jesaun.2006.111081 | ||
| Author | ||
| Mohamed F. Yassin* | ||
| Mining and Metallurgical Engineering Department, Faculty of Engineering, Assiut University, Assiut-71516, Egypt | ||
| Abstract | ||
| The construction, calibration and measurements made by a built up static pressure probe for measurement of unsteady pressures in the flow field are discussed. The wind tunnel experiments were conducted on a series of two-dimensional perforated normal plates to an air stream in order to study the characteristics of unsteady wake pressures and to ascertain if they could be correlated in some way. The velocity ranged from 5 to 15 m/s in the present study. The pressure field gets significantly modified as the perforation level increases. The present study is concerned with three plates with perforation level of 0%, 25% and 35%. A correlation between the maximum normalized value of the mean square pressure fluctuation levels, base pressure and the perforation level of the normal plate was done. | ||
| Keywords | ||
| Fluctuation pressure; Perforated plate; Wake region; Wind tunnel | ||
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