Volume 7, Issue 4 (December 2009)                   IJCE 2009, 7(4): 271-279 | Back to browse issues page


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Farhoudi J. Total Pressure around Chute Blocks of SAF Stilling Basins. IJCE. 2009; 7 (4) :271-279
URL: http://ijce.iust.ac.ir/article-1-245-en.html

Abstract:   (13464 Views)

ABSTRACT

Induced total pressure by flow, including mean and fluctuating components, around a selected chute block in SAF stilling basins downstream of an ogee spillway was studied. Several pressure holes were selected on various faces of a selected chute block to get enough information regarding the total pressure field. This paper reports the results of an experimental work and measurement of mean and fluctuation pressures around chute blocks of SAF stilling basins. The observations showed that the maximum total pressure varies inversely with Froude number of incoming flow while its position of occurrence follows a quadratic polynomial relation ship. Statistical analysis also showed that the peak instantaneous pressure fluctuations could be as large as ±4.5times the RMS value.It is concluded that pressure fluctuation around the chute blocks may double the magnitude of pressure field around the chute blocks and can not be overlooked in designing such appurtenances.

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Type of Study: Research Paper | Subject: Water-Hydraulic Structure

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