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Author: V.K. Dhir Publisher: ISBN: Category : Heat-Transmission Languages : en Pages : 0
Book Description
In the last two decades the research activity in the field of two phase flow and heat transfer has seen a continuing upward trend. Efforts in the development of new instruments, experimental techniques and analysis have brought forth new insights into the phenomena. The papers compiled in this volume reinforce this observation. These papers are to be presented in three sessions and cover a wide spectrum of research interests. Each of the sessions has seven papers. The first session contains papers on bubble condensation, oscillation frequency of bubbles condensing in a pool and growth of bubbles in a time dependent pressure field. There also are papers on dry out in a bottom heated bed of suspended particles, transition boiling on a vertical surface and liquid solid contacts in transition boiling. The last paper in this session compares results from several correlations for heat and mass transfer under entrained flow conditions. The papers in the second session are on nuclear reactor thermal hydraulic scaling criteria, unsteady two phase natural convection and on critical flow during flashing of subcooled liquid in nozzles. There are also two other papers on critical two phase flows and one each on analysis of density -wave oscillations and effect of sub cooling on dynamic instabilities in two phase flows. Most of the papers in the third session are on heat exchangers. The first paper deals with a fast running numerical method for solving two fluid equations in two dimensions and an application to flooding in certain nuclear reactor geometries. In the second paper crevice boiling in prototype steam generators is studies experimentally. The third paper deals with shift in the point of net vapor generation during transient flow boiling in a horizontal channel. The overall thermal hydraulic phenomena in horizontal steam generator pipes is studied in the fourth paper while the predictions of convective boiling heat transfer in serrated plate fin heat exchangers are made in the fifth paper. The last two papers deal with condensation in horizontal passages. The papers contained in this volume represent a good balance between basic studies and applications. The body of knowledge contained in these papers suggests a welcome shift from purely correlative approach to amore mechanistic approach. With this it seems we have moved one step closer to reality in describing the phase change processes, interfacial heat and mass transfer and various hydrodynamic aspects of two phase flow. We wish to express our appreciation of the efforts and contributions of the authors and the reviewers.
Author: V.K. Dhir Publisher: ISBN: Category : Heat-Transmission Languages : en Pages : 0
Book Description
In the last two decades the research activity in the field of two phase flow and heat transfer has seen a continuing upward trend. Efforts in the development of new instruments, experimental techniques and analysis have brought forth new insights into the phenomena. The papers compiled in this volume reinforce this observation. These papers are to be presented in three sessions and cover a wide spectrum of research interests. Each of the sessions has seven papers. The first session contains papers on bubble condensation, oscillation frequency of bubbles condensing in a pool and growth of bubbles in a time dependent pressure field. There also are papers on dry out in a bottom heated bed of suspended particles, transition boiling on a vertical surface and liquid solid contacts in transition boiling. The last paper in this session compares results from several correlations for heat and mass transfer under entrained flow conditions. The papers in the second session are on nuclear reactor thermal hydraulic scaling criteria, unsteady two phase natural convection and on critical flow during flashing of subcooled liquid in nozzles. There are also two other papers on critical two phase flows and one each on analysis of density -wave oscillations and effect of sub cooling on dynamic instabilities in two phase flows. Most of the papers in the third session are on heat exchangers. The first paper deals with a fast running numerical method for solving two fluid equations in two dimensions and an application to flooding in certain nuclear reactor geometries. In the second paper crevice boiling in prototype steam generators is studies experimentally. The third paper deals with shift in the point of net vapor generation during transient flow boiling in a horizontal channel. The overall thermal hydraulic phenomena in horizontal steam generator pipes is studied in the fourth paper while the predictions of convective boiling heat transfer in serrated plate fin heat exchangers are made in the fifth paper. The last two papers deal with condensation in horizontal passages. The papers contained in this volume represent a good balance between basic studies and applications. The body of knowledge contained in these papers suggests a welcome shift from purely correlative approach to amore mechanistic approach. With this it seems we have moved one step closer to reality in describing the phase change processes, interfacial heat and mass transfer and various hydrodynamic aspects of two phase flow. We wish to express our appreciation of the efforts and contributions of the authors and the reviewers.
Author: Sadik Kakaç Publisher: Springer Science & Business Media ISBN: 9400927908 Category : Technology & Engineering Languages : en Pages : 1090
Book Description
Two-phase flow heat exchangers are vital components of systems for power generation, chemical processing, and thermal environment control. The art and science of the design of such heat exchangers have advanced considerably in recent years. This is due to better understanding of the fundamentals of two-phase flow and heat transfer in simple geometries, greater appreciation of these processes in complex goemetries, and enhanced predictive capability through use of complex computer codes. The subject is clearly of great fundamental and practical importance. The NATO ASIan Thermal-Hydraulic Fundamentals and Design of Two-Phase Flow Heat Exchangers was held in Povoa de Varzim (near Porto), Portugal, July 6-17, 1987. participating in the organization of" the ASI were the Department of Mechanical Engineering and the Clean Energy Research Institute, University of Miami; Universidade do Porto; and the Department of Mechanical Engineering, Aeronautical Eng ineer ing, and Mechanics, Rensselaer Polytechnic Institute. The ASI was arranged primarily as a high-level teaching activity by experts representing both academic and industrial viewpoints. The program included the presentation of invited lectures, a limited number of related technical papers and discussion sessions.
Author: John R Thome Publisher: World Scientific ISBN: 9814623296 Category : Technology & Engineering Languages : en Pages : 1321
Book Description
The aim of the two-set series is to present a very detailed and up-to-date reference for researchers and practicing engineers in the fields of mechanical, refrigeration, chemical, nuclear and electronics engineering on the important topic of two-phase heat transfer and two-phase flow. The scope of the first set of 4 volumes presents the fundamentals of the two-phase flows and heat transfer mechanisms, and describes in detail the most important prediction methods, while the scope of the second set of 4 volumes presents numerous special topics and numerous applications, also including numerical simulation methods.Practicing engineers will find extensive coverage to applications involving: multi-microchannel evaporator cold plates for electronics cooling, boiling on enhanced tubes and tube bundles, flow pattern based methods for predicting boiling and condensation inside horizontal tubes, pressure drop methods for singularies (U-bends and contractions), boiling in multiport tubes, and boiling and condensation in plate heat exchangers. All of these chapters include the latest methods for predicting not only local heat transfer coefficients but also pressure drops.Professors and students will find this 'Encyclopedia of Two-Phase Heat Transfer and Flow' particularly exciting, as it contains authored books and thorough state-of-the-art reviews on many basic and special topics, such as numerical modeling of two-phase heat transfer and adiabatic bubbly and slug flows, the unified annular flow boiling model, flow pattern maps, condensation and boiling theories, new emerging topics, etc.
Author: Sadik Kakaç Publisher: Springer Science & Business Media ISBN: 9400968485 Category : Science Languages : en Pages : 459
Book Description
Over the past two decades, two-phase flow and heat transfer problems associated with two-phase phenomena have been a challenge to many investigators. Two-phase flow applications are found in a wide range of engineering systems, such as nuclear and conventional power plants, evaporators of refrigeration systems and a wide vari ety of evaporative and condensive heat exchangers in the chemical industry. This publication is based on the invited lectures presented at the NATO Advanced Research Workshop on the Advances in Two-Phase Flow and Heat Transfer. The Horkshop was attended by more than 50 leading scientists and practicing engineers who work actively on two-phase flow and heat transfer research and applications in dif ferent sectors (academia, government, industry) of member countries of NATO. Some scientific leaders and experts on the subject matter from the non-NATO countries were also invited. They convened to discuss the state-of-the-art in two-phase flow and heat transfer and formulated recommendations for future research directions. To achieve these goals, invited key papers and a limited number of contributions were presented and discussed. The specific aspects of the subject were treated in depth in the panel sessions, and the unresolved problems identified. Suitable as a practical reference, these volumes incorporate a systematic approach to two-phase flow analysis.
Author: John R Thome Publisher: World Scientific ISBN: 9813227427 Category : Technology & Engineering Languages : en Pages : 1460
Book Description
Set III of this encyclopedia is a new addition to the previous Sets I and II. It contains 26 invited chapters from international specialists on the topics of numerical modeling of two-phase flows and evaporation, fundamentals of evaporation and condensation in microchannels and macrochannels, development and testing of micro two-phase cooling systems for electronics, and various special topics (surface wetting effects, microfin tubes, two-phase flow vibration across tube bundles). The chapters are written both by renowned university researchers and by well-known engineers from leading corporate research laboratories. Numerous 'must read' chapters cover the fundamentals of research and engineering practice on boiling, condensation and two-phase flows, two-phase heat transfer equipment, electronics cooling systems, case studies and so forth. Set III constitutes a 'must have' reference together with Sets I and II for thermal engineering researchers and practitioners.
Author: Sadik Kakaç Publisher: Springer Science & Business Media ISBN: 9400968450 Category : Science Languages : en Pages : 465
Book Description
Over the past two decades, two-phase flow and heat transfer problems associated with two-phase phenomena have been a challenge to many investigators. Two-phase flow applications are found in a wide range of engineering systems, such as nuclear and conventional power plants, evaporators of refrigeration systems and a wide vari ety of evaporative and condensive heat exchangers in the chemical industry. This publication is based on the invited lectures presented at the NATO Advanced Research Workshop on the Advances in Two-Phase Flow and Heat Transfer. The Horkshop was attended by more than 50 leading scientists and practicing engineers who work actively on two-phase flow and heat transfer research and applications in dif ferent sectors (academia, government, industry) of member countries of NATO. Some scientific leaders and experts on the subject matter from the non-NATO countries were also invited. They convened to discuss the state-of-the-art in two-phase flow and heat transfer and formulated recommendations for future research directions. To achieve these goals, invited key papers and a limited number of contributions were presented and discussed. The specific aspects of the subject were treated in depth in the panel sessions, and the unresolved problems identified. Suitable as a practical reference, these volumes incorporate a systematic approach to two-phase flow analysis.
Author: John R. Thome Publisher: World Scientific Publishing Company ISBN: 9789813227316 Category : Ebullition Languages : en Pages : 0
Book Description
Set III of this encyclopedia is a new addition to the previous Sets I and II. It contains 26 invited chapters from international specialists on the topics of numerical modeling of two-phase flows and evaporation, fundamentals of evaporation and condensation in microchannels and macrochannels, development and testing of micro two-phase cooling systems for electronics, and various special topics (surface wetting effects, microfin tubes, two-phase flow vibration across tube bundles). The chapters are written both by renowned university researchers and by well-known engineers from leading corporate research laboratories. Numerous 'must read' chapters cover the fundamentals of research and engineering practice on boiling, condensation and two-phase flows, two-phase heat transfer equipment, electronics cooling systems, case studies and so forth. Set III constitutes a 'must have' reference together with Sets I and II for thermal engineering researchers and practitioners.
Author: V.K. Dhir
Author: V.K. Dhir
Author: V. K. Dhir
Author: V. K. Dhir
Author: Sadik Kakaç
Author: John R Thome
Author: Sadik Kakaç
Author: John R Thome
Author: Sadik Kakaç
Author: A. E. Bergles
Author: John R. Thome