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Book An Experimental Investigation of the Natural Convection Boundary Layer Over a Uniform Flux Inclined Surface

Download or read book An Experimental Investigation of the Natural Convection Boundary Layer Over a Uniform Flux Inclined Surface written by Hussain Shaukatullah and published by . This book was released on 1978 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Experimental Investigation of Natural Convection of Mercury in an Open Uniformly Heated Vertical Channel

Download or read book Experimental Investigation of Natural Convection of Mercury in an Open Uniformly Heated Vertical Channel written by Robert G. Colwell and published by . This book was released on 1973 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation was conducted to determine characteristics of natural convection of mercury in a vertical channel, which was open at both ends. Two cases were investigated separately: 1) both walls uniformly and symmetrically heated, and 2) one wall heated with the other insulated. Heat transfer correlations in laminar flow were obtained for several aspect ratios (channel height/width ratio), using streamwise distance from the leading edge as the characteristic dimension. These were generalized into one correlation which contains aspect ratio, parametrically, for each set of boundary conditions. The influence of flow in from the open sides of the channel was investigated by installing insulating plates along the vertical edges. It was observed that the average velocity of a low Prandtl number fluid in buoyant flow increases as the channel width is reduced. This results in a reduction of average wall temperature until the channel is sufficiently narrow that viscous forces begin to play an important role in the integral momentum balance across the channel. The channel was thus observed to be more thermally efficient than a single heated plate for aspect ratios less than 20. Velocity profiles were obtained in the region of laminar flow for each set of boundary conditions and several channel aspect ratios. Integration of the profiles gave mass flux predictions for various conditions. A hot film anemometer was used, and has proven to be very accurate for velocity measurement in the 5-100 in/min range. The documentation of laminar instability in buoyant channel flow was also an integral facet of this experiment. The criterion used was Grashof modulus based on the streamwise coordinate where the first "observable" velocity disturbance waves were determined. Channel width decrease initially had a destabilizing influence on the flow. The transition criterion displayed a minimum value at a particular aspect ratio. It was also observed that, in narrow channel cases at the highest heat flux used, flow underwent transition then relaminarized as the boundary layers met and fully-developed conditions were established. The thesis also discusses the apparatus and unique aspects of the experimental program. Data reduction methods, property determination and some anomalies of hot film anemometry in a liquid metal are also discussed.

Book Advances in Applied Mechanics

Download or read book Advances in Applied Mechanics written by and published by Academic Press. This book was released on 1982-06-24 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Applied Mechanics

Book An Experimental Study of Vigorous Transient Natural Convection

Download or read book An Experimental Study of Vigorous Transient Natural Convection written by Joseph Charles Mollendorf and published by . This book was released on 1969 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book An Experimental Investigation of the Onset of the Effects of Natural Convection on Heat Transfer Through Vertical Annular Layers of Liquid

Download or read book An Experimental Investigation of the Onset of the Effects of Natural Convection on Heat Transfer Through Vertical Annular Layers of Liquid written by Hunter Lawrence Cox and published by . This book was released on 1967 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book An Experimental and Numerical Study of Natural Convection Heat Transfer in Vertical Enclosures of Moderate Aspect Ratio which are Partitioned at Different Angles

Download or read book An Experimental and Numerical Study of Natural Convection Heat Transfer in Vertical Enclosures of Moderate Aspect Ratio which are Partitioned at Different Angles written by Mehdi Ashjaee and published by . This book was released on 1986 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book An Analytical and Experimental Investigation of Natural Convection Heat Transfer in Vertical Channels with a Single Obstruction

Download or read book An Analytical and Experimental Investigation of Natural Convection Heat Transfer in Vertical Channels with a Single Obstruction written by Syed-Ahmed M. Said and published by . This book was released on 1986 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Experimental investigation and computational modelling of thermal boundary layers in turbulent natural convection

Download or read book Experimental investigation and computational modelling of thermal boundary layers in turbulent natural convection written by Claudia Zimmermann and published by Cuvillier Verlag. This book was released on 2015-09-08 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: Die vorliegende Arbeit beschäftigt sich mit der numerischen und experimentellen Modellierung turbulenter thermisch angetriebener Luftströmungen in unterschiedlichen Test-Konfigurationen. Diese so genannten Konvektionsströmungen stellen eines der fundamentalen Probleme der Strömungsmechanik dar. Sie ziehen ein großes wissenschaftliches Interesse auf sich, da sie in vielen Bereichen, wie z. B. in der Meteorologie oder auch in industriellen Anwendungen, eine wesentliche Rolle spielen. Vor allem vor dem Hintergrund atmosphärischer Konvektionsströmungen, die durch eine durch die Erdbewegung hervorgerufene Corioliskraft beeinflusst werden und sich zu Wirbelstürmen ausbilden können, ist ein Verständnis dieser Strömungen sehr wichtig. Die Konvektionsströmung wird in jeder einzelnen Test-Konfiguration immer zwischen zwei sich gegenüberliegenden, isotherm beheizten Wänden erzeugt. Neben der Validierung des gewählten numerischen Modells einer Large-Eddy-Simulation (LES), geben die erzielten Ergebnisse der Arbeit Aufschluss über die Strömungsdynamik, die entstehenden Turbulenzstrukturen sowie die Wärmeübertragung in der jeweiligen Test-Konfiguration. Hierbei steht vor allem die Auflösung der thermalen Wandgrenzschicht im Mittelpunkt. Hervorzuheben ist die numerische sowie auch experimentelle Untersuchung eines sogenannten Rayleigh-Bénard Problems, das unter Einfluss einer zusätzlich wirkenden Corioliskraft steht. Das hierfür realisierte Experiment in einer Großzentrifuge und die zugehörige numerische Studie geben Aufschluss über die Auswirkung der zusätzlich wirkenden Relativbeschleunigungen auf die Turbulenzproduktion und die Wärmeübertragung im Fluid.

Book Experimental Investigation of Natural Convection from a Vertical Cylinder with Uniform Heat Flux and in a Vertical Annulus with Mixed Boundary Conditions

Download or read book Experimental Investigation of Natural Convection from a Vertical Cylinder with Uniform Heat Flux and in a Vertical Annulus with Mixed Boundary Conditions written by Ramaswami Srinivasan and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Scientific and Technical Aerospace Reports

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Theoretical and Experimental Study of the Stability of the Laminar Natural Convection Boundary Layer Over a Vertical Uniform Flux Plate

Download or read book A Theoretical and Experimental Study of the Stability of the Laminar Natural Convection Boundary Layer Over a Vertical Uniform Flux Plate written by Cyrus Philipp Knowles and published by . This book was released on 1967 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: