Experimental of flow measurement over different shape of cavities for low reynolds number

Muhammad Akmal Akif , Muhammad Wazir (2013) Experimental of flow measurement over different shape of cavities for low reynolds number. Project Report. UTeM. (Submitted)

Text EXPERIMENT AL OF FLOW MEASUREMENT OVER DIFFERENT SHAPE OF CAVITIES FOR LOW REYNOLDS NUMBER 24pages.pdf Download (6MB)

Abstract

Experiments are carried out in order to investigate the flow structure past rectangular, triangular and semicircular cavity of length-to-depth ratio 2: 1 using Particle lmage Velocimetry (PIV) technique. The experiments are performed in large scale water channel with constant upstream velocities of Reynolds numbers which is low Reynolds number flow. Contours of constant averaged streamwise and transverse components of velocity, contours of averaged vorticity, Reynolds stress and streamline plots for each cavity are presented. ln addition, streamwise velocity, Reynolds stress values are compared for all cavity types. Effect of cavity shape on flow structure within cavity is discussed in details. Moreover, spectrum of instantaneous streamwise velocity fluctuations in shear layer near the downstream of the leading comer and the upstream of the trailing comer of cavity are the most focal point to this research in order to determine the organized oscillations present in the flow for rectangular, triangular and semicircular cavity shapes. The usage of Particle Image Velocimetry (PJV) will become the medium is determination of flow measurement within each cavity and determine the most efficient cavity shapes in removing the contaminants.

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