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Experimental Investigation Of Thermal And Fluid Dynamical Behavior Of Flows In Open Ended Channels
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Book Synopsis Experimental Investigation of Thermal and Fluid Dynamical Behavior of Flows in Open-ended Channels by : Estibaliz Sanvicente
Download or read book Experimental Investigation of Thermal and Fluid Dynamical Behavior of Flows in Open-ended Channels written by Estibaliz Sanvicente and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among technologies capable to produce electricity locally without contributing to GHG releases, building integrated PV systems (BIPV) could be major contributor. However, when exposed to intense solar radiation, the temperature of PV modules increase significantly, leading to a reduction in efficiency so that only about 14% of the incident radiation is converted into electrical energy. The high temperature also decrease the life of the modules, thereby making passive cooling of the PV components through natural convection a desirable and cost-effective means of overcoming both difficulties. An experimental investigation of heat transfer and fluid flow characteristics of natural convection of air in vertical and inclined open-ended heated channels is therefore undertaken so as provide reliable information for the design of BIPV. Two experimental set ups were developed and used during the present investigations; one located at the CETHIL laboratory in Lyon, the F-device and the other located at the University of New South Wales in Sydney, the R-device. Both channels consisted of two wide parallel plates each of which could be subjected to controlled uniform or non-uniform heat fluxes. The investigation has been conducted by analyzing the mean wall temperatures, measured by thermocouples and mean velocity profiles and turbulent quantity distributions of the flow, measured with a PIV system. Flow patterns close to the heated faces were also investigated. The study is particularly focused on the transition region from laminar to turbulent flow. Three different heating geometric arrangements are examined in the modified Rayleigh number range from 3.86 x 105 to 6.22 x 106. The first is a vertical channel with one wall uniformly heated while the other was unheated, the second was a vertical channel in which both walls were non-uniformly heated and the third is an inclined channel uniformly heated from above. In the vertical configurations the width-to-height channel aspect ratio was fixed at 1:15 and in the inclined ones at 1:16. It is shown that the flow is very sensitivity to disturbances emanating from the ambient conditions. Moreover, the propagation of vortical structures and unsteadiness in the flow channel which are necessary to enhance heat transfer, occurred downstream of the mid-channel section at Ra* = 3.5 x 106 for uniformly and asymmetrically heated channels inclined between 60° and 90° to the horizontal. Indeed, these unsteady flow phenomena appears upstream the location of the inflexion point observed in the temperature excess distribution of the heated wall. In the case of non-uniform heating on both sides of the channel, a stronger 'disruption mechanism' exists, which leads to enhanced mixing and increased Reynolds stresses over most of the width of the channel. Empirical correlations of average Nusselt number as a function of modified Rayleigh number were obtained for each configuration.
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Book Synopsis Scientific and Technical Aerospace Reports by :
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Book Synopsis Proceedings of the ASME Heat Transfer Division by : R. A. Nelson
Download or read book Proceedings of the ASME Heat Transfer Division written by R. A. Nelson and published by . This book was released on 1998 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the ASME Heat Transfer Division by :
Download or read book Proceedings of the ASME Heat Transfer Division written by and published by . This book was released on 1998 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Book Synopsis An Experimental Investigation of Channel Flow with a Smooth Air-Water Interface by : Reza Madad
Download or read book An Experimental Investigation of Channel Flow with a Smooth Air-Water Interface written by Reza Madad and published by . This book was released on 2013 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Book Synopsis Experimental Investigation of Passive Flow Destabilization and Heat Transfer Enhancement in Grooved Channels by : Ruey-Feng Chen
Download or read book Experimental Investigation of Passive Flow Destabilization and Heat Transfer Enhancement in Grooved Channels written by Ruey-Feng Chen and published by . This book was released on 1993 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Book Synopsis Recent Advances in Applied Mathematics and Applications to the Dynamics of Fluid Flows by : Suripeddi Srinivas
Download or read book Recent Advances in Applied Mathematics and Applications to the Dynamics of Fluid Flows written by Suripeddi Srinivas and published by Springer Nature. This book was released on 2022-10-15 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents select proceedings of the 5th International Conference on Applications of Fluid Dynamics (ICAFD 2020) organized by the School of Mechanical Engineering Science, VIT-AP University, India, in association with the University of Johannesburg, Auckland Park Kingsway Campus, South Africa. It identifies the existing challenges in the area of applied mathematics and mechanics (of solids and fluids) and emphasizes the importance of establishing new methods and algorithms to address these challenges. The topics covered include diverse applications of fluid dynamics in aerospace dynamics and propulsion, atmospheric sciences, compressible flow, environmental fluid dynamics, control structures, viscoelasticity and mechanics of composites. Given the contents, the book will be a useful resource for researchers as well as practitioners working in the area of mechanical engineering and applied mathematics.
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