Heat And Mass Transfer Near An Oscillating Interface
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Heat And Mass Transfer Near An Oscillating Interface
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Author : Zhengdong Chen
language : en
Publisher:
Release Date : 1997
Heat And Mass Transfer Near An Oscillating Interface written by Zhengdong Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Heat categories.
Oscillating Heat Pipes
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Author : Hongbin Ma
language : en
Publisher: Springer
Release Date : 2015-05-22
Oscillating Heat Pipes written by Hongbin Ma and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-05-22 with Science categories.
This book presents the fundamental fluid flow and heat transfer principles occurring in oscillating heat pipes and also provides updated developments and recent innovations in research and applications of heat pipes. Starting with fundamental presentation of heat pipes, the focus is on oscillating motions and its heat transfer enhancement in a two-phase heat transfer system. The book covers thermodynamic analysis, interfacial phenomenon, thin film evaporation, theoretical models of oscillating motion and heat transfer of single phase and two-phase flows, primary factors affecting oscillating motions and heat transfer, neutron imaging study of oscillating motions in an oscillating heat pipes, and nanofluid’s effect on the heat transfer performance in oscillating heat pipes. The importance of thermally-excited oscillating motion combined with phase change heat transfer to a wide variety of applications is emphasized. This book is an essential resource and learning tool for senior undergraduate, graduate students, practicing engineers, researchers, and scientists working in the area of heat pipes. This book also · Includes detailed descriptions on how an oscillating heat pipe is fabricated, tested, and utilized · Covers fundamentals of oscillating flow and heat transfer in an oscillating heat pipe · Provides general presentation of conventional heat pipes
Imaging Heat And Mass Transfer Processes
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Author : Pradipta Kumar Panigrahi
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-09-26
Imaging Heat And Mass Transfer Processes written by Pradipta Kumar Panigrahi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-09-26 with Science categories.
Imaging Heat and Mass Transfer Processes: Visualization and Analysis applies Schlieren and shadowgraph techniques to complex heat and mass transfer processes. Several applications are considered where thermal and concentration fields play a central role. These include vortex shedding and suppression from stationary and oscillating bluff bodies such as cylinders, convection around crystals growing from solution, and buoyant jets. Many of these processes are unsteady and three dimensional. The interpretation and analysis of images recorded are discussed in the text.
Turbulence Phenomena
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Author : J.T. Davies
language : en
Publisher: Elsevier
Release Date : 2012-12-02
Turbulence Phenomena written by J.T. Davies and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Technology & Engineering categories.
Turbulence Phenomena provides an introduction to the eddy transfer of momentum, mass, and heat, specifically at interfaces. The approach of the discussion of the subject matter is based on the eddy mixing length concept of Prandtl. Chapter 1 begins with a discussion on basic concepts regarding liquid flow such as viscosity, turbulent flows, and velocities. As concepts and theories are established, the book then discusses the eddy transfer in fluids, specifically eddy transfer of mass and heat within fluids and eddy transfer near solid surfaces. The concept of eddies in different surfaces is discussed in length all throughout numerous chapters. These different surfaces include clean gas-liquid surfaces, clean liquid-liquid interfaces, and film-covered surfaces. The last few chapters focus on the more detailed discussion on turbulence, such as the concept of spontaneous interfacial turbulence and emulsification and turbulent dispersion and coalescence. The book will be of great use to undergraduate students of chemical engineering, physics, and chemistry.
Advanced Heat And Mass Transfer
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Author : Amir Faghri
language : en
Publisher: Global Digital Press
Release Date : 2010
Advanced Heat And Mass Transfer written by Amir Faghri and has been published by Global Digital Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Heat categories.
All relevant advanced heat and mass transfer topics in heat conduction, convection, radiation, and multi-phase transport phenomena, are covered in a single textbook, and are explained from a fundamental point of view.
Encyclopedia Of Two Phase Heat Transfer And Flow Iv
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Author : John R Thome
language : en
Publisher: World Scientific Publishing
Release Date : 2018-05-18
Encyclopedia Of Two Phase Heat Transfer And Flow Iv written by John R Thome and has been published by World Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-18 with Technology & Engineering categories.
Set IV is a new addition to the previous Sets I, II and III. It contains 23 invited chapters from international specialists on the topics of numerical modeling of pulsating heat pipes and of slug flows with evaporation; lattice Boltzmann modeling of pool boiling; fundamentals of boiling in microchannels and microfin tubes, CO2 and nanofluids; testing and modeling of micro-two-phase cooling systems for electronics; and various special topics (flow separation in microfluidics, two-phase sensors, wetting of anisotropic surfaces, ultra-compact heat exchangers, etc.). The invited authors are leading university researchers and well-known engineers from leading corporate research laboratories (ABB, IBM, Nokia Bell Labs). Numerous 'must read' chapters are also included here for the two-phase community. Set IV constitutes a 'must have' engineering and research reference together with previous Sets I, II and III for thermal engineering researchers and practitioners.
Experimental And Theoretical Study Of Oscillatory Two Phase Flows With Heat And Mass Transfer
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Author : Faith Rose Beck
language : en
Publisher:
Release Date : 2019
Experimental And Theoretical Study Of Oscillatory Two Phase Flows With Heat And Mass Transfer written by Faith Rose Beck and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
This dissertation presents experimental and theoretical analyses of oscillatory two-phase flows with heat and mass transfer on liquid carryover behavior during refloodof a simulated nuclear reactor core. In a hypothetical large break loss of coolantaccident (LBLOCA), associated with a break in one of the hot- or cold-legs, theemergency core cooling system (ECCS) must provide sufficient coolant to the coreto remove decay heat and prevent the cladding from exceeding 1477.6 K. Duringreflood, flow to the core is gravity-driven, resulting in an oscillatory delivery ofcoolant. These oscillations have been attributed to vapor generation in the coreand a dynamic response of the downcomer water level. Nearly all reflood simulation experiments have been conducted with constant reflood rates, and have not considered the effect of oscillations on rod bundle thermal-hydraulics. The few studies that have been conducted with oscillating flow indicated enhanced entrainment and carryover of liquid from the quench front. While higher entrainmentcan provide precursory cooling ahead of the quench front, it can also expel morecoolant out of the system during oscillatory reflood. The amount of liquid entrained can be significant because, in an accident scenario, the quench rate will beslowed, and it can take longer to fully recover the core. At the Nuclear Regulatory Commission (NRC)/Penn State University (PSU) Rod Bundle Heat Transfer(RBHT) Test Facility, an electrically heated 77, 3.66 m (full-length) rod bundlearray has the capability of performing both constant and oscillatory forced floodingrate experiments. The facility is heavily instrumented, equipped with seven spacergrids with which to analyze droplet and heat transfer phenomena. The system canvary the oscillation period (2 to 10 s), magnitude (0.0254 to 0.0762 m/s), systempressure (0.14 to 0.41 MPa), and subcooling (5 to 55 C) in order to study theentrained droplet dynamics and heat transfer under constant and oscillatory flowconditions.This dissertation includes the analysis of forced oscillatory reflood experiments, which concentrate on the effects of flow (frequency, magnitude, and nominal flooding rate) and system parameters (pressure, subcooling, and bundle fouling) on heat transfer and entrained droplet dynamics. Major findings from the experimental work include: 1) decreasing the oscillation period decreases the peak cladding temperature and the steam temperatures, as well as enhances the liquid carryoverwhen compared with constant reflood experiments; 2) decreasing the system pres-sure enhances the effect of flow oscillations; and 3) the presence of bundle foulingimproves cooling and decreases the amount of liquid carryover. To the authorsknowledge, experiments with the parameters varied in this work, coupled with therod bundle geometry, have not been explored previously.This dissertation utilizes the unique dataset collected at the NRC/PSU RBHT to perform a stability analysis of oscillatory two-phase flows. The governing equations established for this flow incorporate Floquet and viscous-potential flow theories. From the analysis, it is found that the stability at the two-phase interface is highly dependent on the flow orientation and heat transfer to the system. Inaddition, a correlation is developed for the liquid carryover that uses parameters derived from the stability analysis to predict the carryover during oscillatory reflood. The correlation is the first of its kind to include the effects of a moving quench front on the liquid carryover. The carryover model is validated using NRC/PSU RBHT data, as well as other relevant rod bundle data, and the NRCs TRACE code.
Advances In Heat Transfer
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Author : Young I. Cho
language : en
Publisher: Academic Press
Release Date : 2011-11-23
Advances In Heat Transfer written by Young I. Cho and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-11-23 with Science categories.
Advances in Heat Transfer fills the information gap between regularly scheduled journals and university-level textbooks by providing in-depth review articles over a broader scope than in journals or texts. The articles, which serve as a broad review for experts in the field, will also be of great interest to non-specialists who need to keep up-to-date with the results of the latest research. This serial is essential reading for all mechanical, chemical and industrial engineers working in the field of heat transfer, graduate schools or industry. Provides an overview of review articles on topics of current interest Bridges the gap between academic researchers and practitioners in industry A long-running and prestigious series
Analytical Solutions For Transport Processes
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Author : Günter Brenn
language : en
Publisher: Springer
Release Date : 2016-07-26
Analytical Solutions For Transport Processes written by Günter Brenn and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-07-26 with Science categories.
This book provides analytical solutions to a number of classical problems in transport processes, i.e. in fluid mechanics, heat and mass transfer. Expanding computing power and more efficient numerical methods have increased the importance of computational tools. However, the interpretation of these results is often difficult and the computational results need to be tested against the analytical results, making analytical solutions a valuable commodity. Furthermore, analytical solutions for transport processes provide a much deeper understanding of the physical phenomena involved in a given process than do corresponding numerical solutions. Though this book primarily addresses the needs of researchers and practitioners, it may also be beneficial for graduate students just entering the field.
Bubbles In Polymeric Liquids
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Author : S.P. Levitsky
language : en
Publisher: CRC Press
Release Date : 1995-01-09
Bubbles In Polymeric Liquids written by S.P. Levitsky and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-01-09 with Technology & Engineering categories.
From the Authors' Preface The advancements of technology . . . and chemical engineering have brought about extensive use of a wide range of rheologically complex materials, e.g., polymeric solutions and melts, suspensions, mixtures, oil products, fibre-forming substances, etc. that are characterized by diverse and, every so often, significant deviations from classical Newtonian behavior. Such materials are often used in conditions where the formation of vapor-gas bubbles or two-phase flow regimes is possible. This necessitates deep investigations into the thermo-hydrodynamic problems of liquids with bubbles for the case of a continuous phase with anomalous rheological properties. These conditions are typical of a number of applications and manufacturing processes, e.g., gas removal from polymeric solutions or melts in production of film, chemical fibres and other polymeric materials. . . . The bubbles containing gas or vapor-gas mixtures are often present in polymeric systems. This is because of a number of reasons, e.g., a low wettability of solid surfaces by polymers, the use of volatile solvents, abundance of vapor-gas nuclei, the capture of gas by porous or fibre-like polymeric particles during the polymer dissolution or melting, etc. Spontaneous evacuation of bubbles in polymeric media is usually complicated by a high viscosity of the liquid; therefore two-phase polymeric systems possess a higher sedimentation and aggregation stability than bubble mixtures in low-molecular-weight liquids. One of the main problems in the dynamics of vapor-liquid and gas-liquid systems is the investigation of heat and mass transfer and phase interactions in a liquid with bubbles. The decisive importance of this problem in the analysis of various aspects of the bubbly fluid behavior under diverse conditions, in particular, during a sound wave propagation, has given impetus to numerous researches. The current state of art in the investigation of Newtonian liquids with bubbles is described in voluminous literature. However, these problems have been much less studied for non-Newtonian systems. Behavior of bubbles in polymeric liquids is of great interest because of wide application in chemical technology. . . . In a number of processes connected with the application of polymeric fluids, the dynamic interaction of bubbles with liquid phase plays the key role. Such interaction in the case of a polymeric liquid phase are essentially influenced by the specific properties of macromolecular fluids, including primarily the rheological effects. These effects in the bubble dynamics combined with heat and mass transfer between the bubble content and the ambient liquid constitute the main subject of the analysis presented in this book. Macrokinetics Laboratory, and Full Professor at the Byelorussian Polytechnic Institute, Department of Heat and Power Engineering. Dr. Schulman is recognized as a leading authority in his field of investigation. Extensive Bibliography: A valuable feature of this new book is its extensive international bibliography, with 393 references.