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The Flow Structure Under Mixed Convection In A Uniformly Heated Vertical Pipe
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Book Synopsis The Flow Structure Under Mixed Convection in a Uniformly Heated Vertical Pipe by : Jeongik Lee
Download or read book The Flow Structure Under Mixed Convection in a Uniformly Heated Vertical Pipe written by Jeongik Lee and published by . This book was released on 2005 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Cont.) An experimental facility is designed to obtain the data in the regions not covered in previous work, using nitrogen, helium and carbon dioxide. The facility is expected to operate with heat fluxes up to 10kW/m2 and gas velocities up to 2.5m/s by natural circulation only. A velocity calibration method is designed in addition to the hotwire probe for velocity and temperature profiles measurement. Finally, computational simulations, using the commercial code FLUENT, are performed to select an appropriate turbulence model for investigating mixed convection transitional flow regimes. It was concluded that the basic models in FLUENT were not capable of predicting the transitional flow as the Launder-Sharma turbulence model does. Nevertheless, the advanced numerical algorithm and convenient post processor of FLUENT can still be utilized by using UDF to incorporate other turbulence models into the code.
Book Synopsis Orthogonal Mixed Convection Near Vertical Heated Surfaces in Complex External and Internal Flows by : Muhammad Mustafizur Rahman
Download or read book Orthogonal Mixed Convection Near Vertical Heated Surfaces in Complex External and Internal Flows written by Muhammad Mustafizur Rahman and published by . This book was released on 1988 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Linear Stability Analysis of Mixed Convection Flow in a Vertical Pipe by : Yi-Chung Su
Download or read book Linear Stability Analysis of Mixed Convection Flow in a Vertical Pipe written by Yi-Chung Su and published by . This book was released on 1994 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1973 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Analysis of Mixed Convection Flow and Heat Transfer Across a Block-mounted Plate in Asymmetrically Heated Vertical Channels by : Won Tae Kim
Download or read book An Analysis of Mixed Convection Flow and Heat Transfer Across a Block-mounted Plate in Asymmetrically Heated Vertical Channels written by Won Tae Kim and published by . This book was released on 1991 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Convective Heat Transfer by : I. Pop
Download or read book Convective Heat Transfer written by I. Pop and published by Elsevier. This book was released on 2001-02-23 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in studying the phenomena of convective heat and mass transfer between an ambient fluid and a body which is immersed in it stems both from fundamental considerations, such as the development of better insights into the nature of the underlying physical processes which take place, and from practical considerations, such as the fact that these idealised configurations serve as a launching pad for modelling the analogous transfer processes in more realistic physical systems. Such idealised geometries also provide a test ground for checking the validity of theoretical analyses. Consequently, an immense research effort has been expended in exploring and understanding the convective heat and mass transfer processes between a fluid and submerged objects of various shapes. Among several geometries which have received considerable attention are plates, circular and elliptical cylinders, and spheres, although much information is also available for some other bodies, such as corrugated surfaces or bodies of relatively complicated shapes. The book is a unified progress report which captures the spirit of the work in progress in boundary-layer heat transfer research and also identifies potential difficulties and areas for further study. In addition, this work provides new material on convective heat and mass transfer, as well as a fresh look at basic methods in heat transfer. Extensive references are included in order to stimulate further studies of the problems considered. A state-of-the-art picture of boundary-layer heat transfer today is presented by listing and commenting also upon the most recent successful efforts and identifying the needs for further research.
Book Synopsis Mixed Convection Flow and Heat Transfer in a Heated Vertical Convergent Channel by : C. Gau
Download or read book Mixed Convection Flow and Heat Transfer in a Heated Vertical Convergent Channel written by C. Gau and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Heat and Mass Transfer by : Amir Faghri
Download or read book Advanced Heat and Mass Transfer written by Amir Faghri and published by Global Digital Press. This book was released on 2010 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Natural Convection from Circular Cylinders by : Sandra K. S. Boetcher
Download or read book Natural Convection from Circular Cylinders written by Sandra K. S. Boetcher and published by Springer. This book was released on 2014-08-05 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a concise, yet thorough, reference for all heat transfer coefficient correlations and data for all types of cylinders: vertical, horizontal, and inclined. This book covers all natural convection heat transfer laws for vertical and inclined cylinders and is an excellent resource for engineers working in the area of heat transfer engineering.
Book Synopsis FUNDAMENTALS OF HEAT AND MASS TRANSFER by : B. K. VENKANNA
Download or read book FUNDAMENTALS OF HEAT AND MASS TRANSFER written by B. K. VENKANNA and published by PHI Learning Pvt. Ltd.. This book was released on 2010-01-01 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This comprehensive text on the basics of heat and mass transfer provides a well-balanced treatment of theory and mathematical and empirical methods used for solving a variety of engineering problems. The book helps students develop an intuitive and practical under-standing of the processes by emphasizing the underlying physical phenomena involved. Focusing on the requirement to clearly explain the essential fundamentals and impart the art of problem-solving, the text is written to meet the needs of undergraduate students in mechanical engineering, production engineering, industrial engineering, auto-mobile engineering, aeronautical engineering, chemical engineering, and biotechnology.
Book Synopsis Turbulent Forced Convection in Channels and Bundles by : Sadık Kakaç
Download or read book Turbulent Forced Convection in Channels and Bundles written by Sadık Kakaç and published by . This book was released on 1979 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mixed Convection Heat Transfer and Flow in Vertically Heated Channels by : C. Gau
Download or read book Mixed Convection Heat Transfer and Flow in Vertically Heated Channels written by C. Gau and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Developing Laminar Mixed Convection Flow Between Parallel Plates with Symmetric and Asymmetric Uniform Wall Temperature and Uniform Heat Flux by : Valiolah Nourmohammadi
Download or read book Developing Laminar Mixed Convection Flow Between Parallel Plates with Symmetric and Asymmetric Uniform Wall Temperature and Uniform Heat Flux written by Valiolah Nourmohammadi and published by . This book was released on 1986 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mixed Convection Heat Transfer, 1993 by : Majid Keyhani
Download or read book Mixed Convection Heat Transfer, 1993 written by Majid Keyhani and published by . This book was released on 1993 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Applications of Nanofluid for Heat Transfer Enhancement by : Mohsen Sheikholeslami
Download or read book Applications of Nanofluid for Heat Transfer Enhancement written by Mohsen Sheikholeslami and published by William Andrew. This book was released on 2017-02-26 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: Applications of Nanofluid for Heat Transfer Enhancement explores recent progress in computational fluid dynamic and nonlinear science and its applications to nanofluid flow and heat transfer. The opening chapters explain governing equations and then move on to discussions of free and forced convection heat transfers of nanofluids. Next, the effect of nanofluid in the presence of an electric field, magnetic field, and thermal radiation are investigated, with final sections devoted to nanofluid flow in porous media and application of nanofluid for solidification. The models discussed in the book have applications in various fields, including mathematics, physics, information science, biology, medicine, engineering, nanotechnology, and materials science. Presents the latest information on nanofluid free and force convection heat transfer, of nanofluid in the presence of thermal radiation, and nanofluid in the presence of an electric field Provides an understanding of the fundamentals in new numerical and analytical methods Includes codes for each modeling method discussed, along with advice on how to best apply them
Book Synopsis Numerical Modeling of Complex Heat Transfer Phenomena in Cooling Applications by : Xiaofei Hou
Download or read book Numerical Modeling of Complex Heat Transfer Phenomena in Cooling Applications written by Xiaofei Hou and published by . This book was released on 2015 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multiphase and multicomponent flows are frequently encountered in the cooling applications due to combined heat transfer and phase change phenomena. Two-fluid and homogeneous mixture models are chosen to numerically study these flows in the cooling phenomena. Therefore this work is divided in two main parts. In the first part, a two-fluid model algorithm for free surface flows is presented. The two fluid model is usually used as a tool to simulate dispersed flow. With its extension, it may also be applied to large interface (separated) flow. In the second part, the homogeneous mixture model for the multicomponent flow is employed to solve evaporation problems. Finally the simulation is focused on the mixed transitional or turbulent flow with and without evaporation. In detail, this thesis consists of six chapters. The first chapter is devoted to an introduction to the two-fluid and homogeneous mixture models employed in the multiphase/multicomponent flow. The multiphase classification is explained and the previous works on the two models are reviewed. The second chapter is mainly focused on the application of the Fractional step method algorithm in the two-fluid model. In addition, the Conservative Level Set method(interface sharpening) is applied to overcome the weakness of the two-fluid model (numerical diffusion of the interface), which is often encountered in the simulations using this model. With the proposed algorithm, the two-fluid model suitable for the dispersed flow is extended to the separated flow. The homogeneous mixture model is introduced in the third chapter. As an application of this model, different evaporation cases have been tested. A hydrodynamically fully developed laminar flow in a horizontal duct is firstly studied. It is used to verify the model in a laminar flow considering constant physical properties. Water falling films are often applied to enhance the heat transfer. Therefore the second case analyzes the natural convection in a cavity with liquid film (assuming variable physical properties), and validates the falling film model. Finally, a third case is focused on mixed convective flow interacting with a water falling liquid film. The effects of heat flux on the evaporation rate and the flow structure are investigated employing numerical experiments. In the fourth chapter, the laminarization phenomena of turbulent forced flow in a vertical pipe with constant heat flux is studied. These studies validate the prediction ability of large eddy simulation in this complex situation. Afterwards additional cases in a long vertical pipe (100 times diameters) are conducted and the results are compared with the existing experimental data. Throughout the whole pipe, the flow state follows a complicated process, which includes turbulent-laminar and laminar-turbulent transitions. This problem is of great significance in industrial applications for it may result in the enhancement or impairment of heat transfer. Based on the previous verification of the model in turbulent and transitional flow, the simulation of the cooling in a uniformly heated vertical tube is conducted in the fifth chapter with an ascending flow of air and a falling film. This case also involves the transitional complex flow and boundary conditions of falling film with simultaneous heat/mass transfer. The variable factors affecting the evaporation and thermal efficiency have been analyzed. In Appendix C, as an application in engineering of the work developed within the thesis, a series of flows in a complex geometry of a refrigerator chamber without or with fins are simulated to obtain their effects on the flow distribution and mixing feature. In the last chapter, the main conclusions are summarized and the future works are listed.
Book Synopsis Similarity Solutions for the Boundary Layer Flow and Heat Transfer of Viscous Fluids, Nanofluids, Porous Media, and Micropolar Fluids by : John H. Merkin
Download or read book Similarity Solutions for the Boundary Layer Flow and Heat Transfer of Viscous Fluids, Nanofluids, Porous Media, and Micropolar Fluids written by John H. Merkin and published by Academic Press. This book was released on 2021-09-09 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Similarity Solutions for the Boundary Layer Flow and Heat Transfer of Viscous Fluids, Nanofluids, Porous Media, and Micropolar Fluids presents new similarity solutions for fluid mechanics problems, including heat transfer of viscous fluids, boundary layer flow, flow in porous media, and nanofluids due to continuous moving surfaces. After discussing several examples of these problems, similarity solutions are derived and solved using the latest proven methods, including bvp4c from MATLAB, the Keller-box method, singularity methods, and more. Numerical solutions and asymptotic results for limiting cases are also discussed in detail to investigate how flow develops at the leading edge and its end behavior. Detailed discussions of mathematical models for boundary layer flow and heat transfer of micro-polar fluid and hybrid nanofluid will help readers from a range of disciplinary backgrounds in their research. Relevant background theory will also be provided, thus helping readers solidify their computational work with a better understanding of physical phenomena. Provides mathematical models that address important research themes, such as boundary layer flow and heat transfer of micro-polar fluid and hybrid nanofluid Gives detailed numerical explanations of all solution procedures, including bvp4c from MATLAB, the Keller-box method, and singularity methods Includes examples of computer code that will save readers time in their own work
