W.E. Ibele

Heat transfer-A review of current literature

Results of research on heat transfer published during the foregoing year are reviewed. The review is divided into sections dealing with following subjects: donduction, channel flow, boundary-layer flow, flow with separated regions, transfer mechanisms, natural convection, convection from rotating surfaces, combined heat and mass transfer, phase changes, radiation, liquid metals, low-density heat transfer, measurement techniques, heat-transfer applications, and thermodynamic and transport properties. A bibliography of 508 references, arranged according to the above subjects, is given. (D.L.C.)

Heat transfer - A review of 2001 literature

2. Conduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1892 2.1. Contact conduction and contact resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1892 2.2. Micro/nanoscale thermal effects, laser pulse heating, and hyperbolic heat transport . . 1892 2.3. Composites, heterogeneous media and complex geometries . . . . . . . . . . . . . . . . . . . 1893 2.4. Conduction with convection, phase change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1893 2.5. Analytical, numerical and experimental studies . . . . . . . . . . . . . . . . . . . . . . . . . . . 1893 2.6. Thermomechanical problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1893 2.7. Miscellaneous and special applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1893

The effect of temperature on the permeability of a porous material

Abstract The effect of temperature on the flow of compressible fluids through consolidated porous media has been studied experimentally. The work covers a temperature range of 255–1520 K at a pressure of 1 atm. The porous medium was aluminum oxide ceramic with a porosity range of 38.1–49.8%. The gases studied were air, nitrogen, helium and argon. In particular the effect of the ‘slip’ correction term used to explain the change in permeability in the porous flow equations was studied. This permeability correction term depends on the mean free path of the gas and would be expected to increase with temperature. Also the observed permeability should be different for each gas, due to the molecular diameter dependency of the mean free path according to kinetic theory. Both of these expectations were found consistent with the microscopic assumptions. Plots are given showing the relationship of permeability and temperature for the four gases. Helium behavior departs from that of the other three gases. Also shown is how the porous material parameters vary with temperature.

Availability simulation of a lithium bromide absorption heat pump

Abstract Availability data of aqueous solutions of lithium bromide are calculated. A groundwater-fed, solar-assisted absorption heat pump with LiBr-H 2 O as working fluid is simulated. In particular, a second law analysis is applied to detect internal losses quantitatively and to describe ways for physically realistic cost assignment to internal devices. A parameter study shows ways for system optimization.

Numerical Prediction Of Turbulent Oscillating Flow In A Circular Pipe

Turbulence models are reviewed and discussed with respect to their applicability in oscillating flow modeling. The Larn-Brernhorst form of the low-Reynolds number k-/spl epsilon/ turbulence model is chosen for oscillating flow modeling. Computations of oscillating flow in a finite pipe are compared with experimental data. While deficiencies of the turbulence model are identified, the overall agreement is shown to be very satisfactory. The instantaneous friction coefficients for fully developed flow are documented. The use of an effective Valensi number is proposed.

Heat transfer - a review of 1992 literature

THIS REVIEW surveys and characterizes papers comprising various fields of heat transfer that were published in the literature during 1992. It is intended to encompass the English language literature, including English translations of foreign language papers, and also includes many foreign language papers for which English abstracts are available. The literature search was inclusive, however, the great number of publications made selections in some of the review sections necessary. Several conferences during 1992 were devoted to heat transfer or included heat transfer topics in their sessions. They will be briefly discussed in chronological order in this section. The International Center for Heat and Mass Transfer was especially active in organizing meetings and Symposia. The Spacio-Temporal Structure and Chaos in Heat and Mass Transfer Processes was discussed in a symposium on 21-24 May in Athens, Greece. A seminar on Imaging in Transport Processes was held in the same town on 25-29 May. Proceedings for ICHM symposia are available at Hemisphere Publishing Corp. or at the Center. The 37th ASME International Gas Turbine and Aeroengine Congress and Exposition (ASME Turbo Expo) contained in its program eight sessions on blade cooling, hot gas path heat transfer, film cooling, and unsteady turbine heat transfer. It was held in Cologne, Germany on l-4 June. Papers presented at the conference are available at the ASME order department. The Second International Conference on Advanced Computational Methods in Heat Transfer -was organized by the Wessex Institute of Technology at Milan, Italy on 7-10 July. Papers are published by Computational Mechanics Publications. The 28th National Heat Transfer Conference and Exhibition on 9-12 August in San Diego, California discussed in general and poster sessions, panel discussions, symposia, and an open forum topics ranging over the whole field of heat transfer and its applications. The 1992 Donald Q. Kern Lecture was held by Hans K. Fauske on “Ptevention and Mitigation of Hazardous Chemical Releases” and the Max Jakob Memorial Award Lecture by Franz Mayinger discussed “Heat Transfer and Bubble Dynamics in NonEquilibrium Two-Phase Flow”. The Max Jakob Medal and the Donald Q. Kern Award were presented to the speakers at a special dinner. Proceedings of the conference am available at the ASME order department or as AIChE title “Heat Transfer”, Volume 88, San Diego, 1992. The International Center for Heat and Mass Transfer organized an International Symposium on Heat Transfer in Turbomachinery together with a poster session on 24-28 August in Athens, Greece. Conference papers are published by Hemisphere Publishing Corporation. The First European ThermalSciences and 3rd UK National Heat Transfer Conference, 16-18 September in Birmingham, U.K. presented papers on boiling and condensation, heat exchangers, natural convection, nuclear reactors, combustion, radiation and chemical reactions, convection, fouling, and heat transfer to and from solids. Invited lectures by M. G. Carvalho, M. Cumo, F. Mayinger, and P. le QuCr6 on numerical methods, high heat flux, compact heat exchangers, and chaos rounded off the program. The ASME Winter Annual Meeting took place in 8-13 November at Anaheim, California. Heat transfer sessions dealt with basic processes and with applications like biological heat transfer, gas turbines, powder processing, fire and combustion, heat pipes, environment, non-CFC refrigeration, super-conduction, thermoplastic composites, materials processing and electronic packaging. Heat Transfer Memorial Awards were presented to Vijay K. Dhir, Wataru Nakayama, and Thomas F. Irvine, Jr. Richard J. Goldstein was made an honorary ASME member. A list of books related to heat transfer and new journals published during 1992 is presented on the following pages. To facilitate the use of the review, a listing of the subject items is made below in the order in which they appear in the text. The letter which appears adjacent to each subject heading is also added to the references cited in each category.

Heat transfer—a review of 1974 literature

THIS review surveys results that have been published in various fields of heat transfer during 1974. As in the past, the number ofpapers published during that period was such that only a selection can be included in the Review. A more complete list is contained in the heattransfer bibliographies published periodically in this journal. The most significant of the various conferences dealing with heat transfer was the Fifth International Heat Transfer Conference held in Tokyo from 3 to 7 September, 1974. The eight invited lectures dealt respectively with turbulence in heat and mass transfer, growth and decay of ice, holography, numerical methods in convective heat transfer, energy transfer in planetary atmospheres, biological thermo-regulatory systems, complex geometry channels, and radiative transfer at super high temperatures. Thirty-nine sessions were concerned with forced and natural convection, rheological systems, boiling, condensation, combined heat and mass transfer, and heat exchangers. Seven round table meetings, open forums, film sessions, and an equipment show rounded out the program of the Conference which was attended by 537 participants (210ofwhich werefrom abroad)and was well organized by the Japanese Organizing Committee. The proceedings, including discussions, are now available in book form. The 1974 International Seminar of the International Centre for Heat and Mass Transfer was held from 26 to 30 August, 1974 in Trogir, Yugoslavia and was devoted to heat and mass transfer in the environment of vegetation. Invited lectures and short communications covered heat and mass transfer in the soil, in plants, and in the lower atmosphere and treated bioengineering of plant growth and pollution of soil, water, and vegetation.* The 95th Winter Annual Meeting of the American Society of Mechanical Engineers had in its program 11 sessions dealing with thermal energy storage, solar energy applications, heat transfer in equipment, in gas cooled reactors, and in nuclear reactor safety, in addition to fundamental heat-transfer studies. In addition, a panel meeting considered heat exchanger standards.? -___.._-____ *A collection of papers of the conference is available in book form from the Scripta Book Company. ?-Reprints of the papers are available through the Society and many of them will also be published in the Journal of Heat Transfer. The AIChE Symposium Series, Volume 70, No. 138, 1974 “Heat Transfer in Research and Design,” contains papers presented at the 14th National Heat Transfer Conference in Atlanta, as well as papers presented at various meetings of the American Institute of Chemical Engineers The 1974 International Gas Turbine Conference at Zurich was organized by the ASME and the Swiss Society of Engineers and Architects. Two of its 35 sessions were devoted to heat transfer. and papers in other sessions touched on this subject. The 1974 Heat Transfer and Fluid Mechanics Institute was held at Oregon State University from June 12 through June 14,1974. Thirteen of its 22 papers considered heat-transfer problems and two invited lectures discussed transport phenomena in heat pipes and research needs in process heat-transfer design. The proceedings of the conference are available through Stanford University Press. Developments in heat-transfer research during 1974 can be characterized by the following highlights: The largest number of papers were devoted to condu~ion, natural convection, phase change, and properties. Conduction was studied under conditions of phase change by means of numerical methods, and for irregular, composite, and anisotropic bodies. The laminar entrance region, variable properties, and turbulence models were considered in channel flows, with analytical papers far outnumbering experimental ones. Combined natural and forced flow, unsteady conditions, wakes, and jets were investigated in the area of boundary layers. Transfer mechanisms were studied through hot wire measurements, through analytical or statistical theories, and through improvements in phenomenological models. Natural convection papers dealt primarify with enclosures, non-Newtonian fluids, and variable properties. Combined heatand mass-transfer studies were considered with interaction of heated jets with surroundings, film cooling, and to a lesser degree, transpiration cooling. The larger number of applied papers on phase change originated primarily in the Soviet Union and in Japan. Radiation was investigated in non-gray media, either by itself or combined with conduction and convection. Several papers also considered radiative exchange in cavities, in fins, and at very low cryogenic temperatures. Non-intrusive (optical) measurement techniques were described. A large number of papers was devoted to fluidized beds. Plasma heat-transfer studies included 129

Heat transfer—A review of 1968 literature

~ODUC~ON THIS review is concerned with research in the field of heat transfer, the results of which have been published during 1968 or late in 1967. The number of papers in this field publish~ annually is now exceeding a figure of 2000. A selection only can, therefore, be included in this review. A more detailed listing is contained in the Heat Transfer Bibliographies published periodically in this journal. As in previous years, a number of conferences were devoted to heat transfer. The 1968 Heat