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Title: Flow visualization in turbulent free convection over horizontal smooth and grooved surfaces
Authors: Subudhi, Sudhakar
Arakeri J.H.
Published in: International Communications in Heat and Mass Transfer
Abstract: The present paper discusses the flow visualization for turbulent free convection in a tank of water with the bottom surface being a smooth or a grooved surface and the top of the water surface exposed to ambient. The grooved surface is of parallel 90° V-grooves with groove height of 10mm and groove width of 20mm. The experiment is carried out with aspect ratio (AR) of 2.9 and Rayleigh number (Ra) in the range, 1.3×10 7-4×10 7. Here AR is the aspect ratio (= width of fluid layer/height of fluid layer). Heat flux at the bottom surface is from electrical heating. From the pH-dye visualization, interesting flow structures are observed and these structures are analyzed with the help of plumes dynamics and temperature variations with time. © 2011 Elsevier Ltd.
Citation: International Communications in Heat and Mass Transfer (2012), 39(3): 414-418
Issue Date: 2012
Keywords: Free convection
ISSN: 7351933
Author Scopus IDs: 54407504100
Author Affiliations: Subudhi, S., Department of Mechanical Engineering, National Institute of Technology, Calicut, India
Arakeri, J.H., Department of Mechanical Engineering, Indian Institute of Science, Bangalore, India
Corresponding Author: Subudhi, S.; Department of Mechanical Engineering, National Institute of Technology, Calicut, India; email:
Appears in Collections:Journal Publications [ME]

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