Download or read book An Experimental Investigation of Laminar and Transition Heat Transfer to Mercury written by David Carl Peterson and published by . This book was released on 1964 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book An Experimental Investigation of Heat transfer in Liquid Mercury with Turbulent Fully Developed Tube Flow written by Gerald Albert Kane and published by . This book was released on 1964 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theoretical and Experimental Investigation of the Effect of Tunnel Walls on the Forces on an Oscillating Airfoil in Two dimensional Subsonic Compressible Flow written by A. E. Potter and published by . This book was released on 1956 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Transfer to Lead bismuth and Mercury in Laminar and Transistor Pipe Flow written by H. A. Johnson and published by . This book was released on 1953 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of Natural Convection Heat Transfer from Vertical Flat Plates in Mercury written by Donald Henry White and published by . This book was released on 1971 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat transfer from a vertical flat plate in an infinite pool of mercury was investigated. Velocity profiles were measured with a hot-film anemometer and simultaneous temperature profiles measured with thermocouples in this low Prandtl number liquid metal. Constant heat flux plates at Grashof numbers of 9 x 108 and 4 x 107 were investigated. Pseudo-constant temperature plates at Grashof numbers of 8 x 107 and 2 x 107 were investigated. The velocity profiles, the first known natural convection experimental profiles reported for liquid metals, were found to be a function of both plate position and Grashof number. This relationship was predicted by available perturbation solutions for the flat plate in an infinite, low Prandtl number fluid, but not by the similarity or integral solutions. Indications are that the best analytical solutions do a poor job of predicting profiles and that natural convection heat transfer rates in liquid metals are higher than originally believed. The use of a hot-film anemometer to measure low velocities in mercury is possible, but the existence of a thermo-barrier film causes serious experimental problems which have been only partially solved.
Download or read book Report written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1956 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of Natural Convection Heat Transfer from an Array of Uniformly Heated Vertical Cylinders to Mercury written by Jonathan Craig Dutton and published by . This book was released on 1975 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation was conducted for natural convection heat transfer in an array of uniformly heated vertical cylinders in mercury. The test section consisted of seven electrically heated cylinders of 1.365 inch diameter and 3.825 inch heated length arranged in an equilateral triangular pattern. In order to preclude side flow effects, each seven pin bundle was surrounded by an enclosure tube with unheated half cylinders attached to the tube. Temperatures were measured with a stretched wire thermocouple probe which was designed to minimize flow disturbance effects. Four geometries were studied: the single vertical cylinder (P/D = ", and three bundle spacings, P/D = 1.5, 1.3, and 1.1, where P/D is the pitch-to-diameter ratio. The heat transfer results are presented in terms of the local Nusselt number and local modified Grashof number with the range on the Grashof number being 105
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by and published by . This book was released on 1955 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Heat transfer Investigation of Nonwetting Condensing Mercury Flow in Horizontal Sodium potassium cooled Tubes written by Roy A. Lottig and published by . This book was released on 1967 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Transfer to Lead bismuth and Mercury in Laminar and Transition Pipe Flow written by Harold Alexander Johnson and published by . This book was released on 1953 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of Heat Transfer in Laminar Flow of Air Between Two Parallel Plates One Held at Constant Temperature and One Insulated written by Kenneth Leroy Bergman and published by . This book was released on 1960 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of the Pressure Characteristics of Nonwetting Condensing Flow of Mercury in a Sodium potassium cooled Tapered Tube written by Richard W. Vernon and published by . This book was released on 1966 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of Heat Transfer and Friction in a Circular Tube for Laminar Flow of Air Under Conditions of Large Transverse Temperature Gradients written by James Larry Chance and published by . This book was released on 1969 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Gas Entrainment on the Heat Transfer Characteristics of Mercury Under Turbulent Flow Conditions written by Harold Chelemer and published by . This book was released on 1955 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Research Reports written by and published by . This book was released on 1961 with total page 1216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
