Publication: Flow and heat transfer characteristics over rectangular blocked surfaces
Date
Authors
Umur, Habib
Yemenici, Habib
Umur, Yeliz
Authors
Sakin, Ali
Advisor
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Taylor & Francis
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Abstract
Heat transfer and flow measurements were recorded over blocked surfaces to investigate the effects of flow velocity and block shape on flow separation and heat transfer. The results indicated that the flow separation occurred particularly on the first block and after the last blocks. The flow separation and block thickness resulted in higher turbulence and heat transfer, particularly in laminar flow. The average Stanton number increased as high as 125% in laminar, 80% in transitional, and 50% in turbulent flows above those of flat plate values. A new empirical equation indicated a good agreement with the experimental and numerical results.
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Keywords
Thermodynamics, Engineering, Blocked surface, Flow separation, Heat transfer, Turbulent intensity, Turbulent-flow, 3-dimensional blocks, 2-dimensional ribs, Convective flow, Parallel plates, Channel, Enhancement, Obstacles, Flow separation, Flow velocity, Laminar flow, Empirical equations, Flat plate, Flow and heat transfer, Heat transfer and flows, Numerical results, Stanton numbers, Turbulent intensities, Heat transfer
Citation
Umur, H. vd. (2017). ''Flow and heat transfer characteristics over rectangular blocked surfaces''. Experimental Heat Transfer, 30(3), 192-204.