Abstract
Vortex dynamics plays a vital part in the transport of mass, momentum and energy of a flow field. Vortex manipulation is the way out for controlling any device that involves mixing of flow. In the present study, the size of recirculation zone behind the various non-circular geometries and various square blocks of different thicknesses 4, 6 and 8 mm is visualized. The physics behind the wake zone size manipulation for different Reynolds numbers is also investigated. Flow separation and reattachment points and distance of reverse flow for various geometries are observed and illustrated. Work is further extended for flow visualization over forward, backward and combined steps. Experimental analysis is done by using an open channel setup, which is fabricated to designed dimensions. Drag force and the coefficient of drag for various geometries with different set of inclinations (90° and 30 °) and at various Reynolds numbers are calculated. Plots are made between various Reynolds numbers and coefficient of drag, pressure uphill, reverse flow length and are analyzed with respect to different flow features.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Chen, Q., Ronald, J.A., Zhong, Q, Li, D., Wang, Xi.: Experimental study on the role of spanwise vorticity and vortex filaments in the outer region of open-channel flow. J. Hydraul. Res. 52(4), 476–489 (2014)
Konstantinidis, E., Balabani, S.: Symmetric vortex Shedding in the near wake of a circular cylinder due to stream wise perturbations. Journal of Fluid Structure 23, 1047–1063 (2007)
Nezu, I., Rodi, W.: Open-channel flow measurements with a laser Doppler anemometer. J. Hydraul. Eng. 112(5), 335–355 (1986)
Nezu, I., Sanjou, M.: PIV and PTV measurements in hydro-sciences with focus on turbulent open-channel flows. J. Hydro-environ. Res. 5(4), 215–230 (2011)
Prasad, A., Williamson, C.H.K.: The instability of the shear layer separating form a bluff body. J. Fluid Mech. 333, 375–402 (1997)
Rathakrishnan, E.: Visualization of the flow field around a flow plate. Instrum. Measur. Mag. IEEE 15(6), 8–12 (2012)
Takama, Y., Suzuki, K., Rathakrishnan, E.: Visualization and size measurement of vortex shed by flat and arc plates in an uniform flow. Int. Rev. Aerosp. Eng. 1(1), 55–60 (2008)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer Science+Business Media Singapore
About this paper
Cite this paper
Kruthiventi, S., Rayapati, S., Nikhil, S., Manideep (2016). Experimental Studies Involving Flow Visualization Over Non-circular Geometries. In: Regupathi, I., Shetty K, V., Thanabalan, M. (eds) Recent Advances in Chemical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-1633-2_3
Download citation
DOI: https://doi.org/10.1007/978-981-10-1633-2_3
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-1632-5
Online ISBN: 978-981-10-1633-2
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)