Download or read book An Experimental Investigation of Heat Transfer in the Transition and Turbulent Regimes for Natural Convection in Mercury in a Uniformly Heated Vertical Channel written by William Warren Humphreys and published by . This book was released on 1974 with total page 264 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 Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis· seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) *at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac· tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 20 (thesis year 1975) a total of 10,374 theses titles from 28 Canadian and 239 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. The organization of Volume 20 is identical to that of past years. It consists of theses titles arranged by discipline and by university within each discipline.
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 Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study of Natural Convection Heat Transfer from a Uniformly Heated Vertical Plate Immersed in Mercury written by Donald Victor Julian and published by . This book was released on 1968 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of Laminar Natural Convection with a Uniformly Heated Vertical Cylinder in Mercury written by L. E. Wiles and published by . This book was released on 1974 with total page 138 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 Handbook of Heat Transfer written by Warren M. Rohsenow and published by McGraw-Hill. This book was released on 1998-05-22 with total page 1528 pages. Available in PDF, EPUB and Kindle. Book excerpt: This wholly revised edition of a classic handbook reference, written by some of the most eminent practitioners in the field, is designed to be your all-in-one source book on heat transfer issues and problem-solving. It includes the latest advances in the field, as well as covering subjects from microscale heat transfer to thermophysical properties of new refrigerants. An invaluable guide to this most crucial factor in virtually every industrial and environmental process.
Download or read book Experimental Investigation of Natural Convection from an Array of Uniformly Heated Horizontal Cylinders to Mercury written by Deing Wang and published by . This book was released on 1986 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation was conducted to better understand the heat transfer process with natural convection from an array of uniformly heated horizontal cylinders to mercury. Five assembly geometries were studied, these being the single horizontal cylinder, two cylinders with spacing ratios S/D = 2,3 and 4, (S represents the center-to-center spacing between cylinders of diameter, D), and three cylinders with a single spacing ratio of S/D = 2. All cylinders were arranged in the same vertical plane. A scale analysis was employed to predict the relationship between the average Nusselt number and the Boussinesq number. In the case of the single cylinder good agreement was achieved between scale analysis and experimental results. The Nusselt number is a function of Boussinesq number only in the single cylinder case. These findings were extended to cases with two and three cylinders. Correlations of Nusselt number with different Boussinesq numbers, various ratios of spacing and diameters of cylinders have been established for these multiple cylinder cases.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat and Momentum Transfer in Turbulent Flow of Mercury written by Sheldon Erwin Isakoff and published by . This book was released on 1952 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Bibliography written by and published by . This book was released on 1975 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Scientific and Technical Aerospace Reports written by and published by . This book was released on 1967 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
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:
