Cfd Modeling Of Turbulence In Channels Of Plate Heat Exchangers

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CFD Modeling of Turbulence in Channels of Plate Heat Exchangers

Author : Dragan N. Mandic
Publisher : Eliva Press
ISBN 13 : 9781636481296
Total Pages : 126 pages
Book Rating : 4.4/5 (812 download)

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Book Synopsis CFD Modeling of Turbulence in Channels of Plate Heat Exchangers by : Dragan N. Mandic

Download or read book CFD Modeling of Turbulence in Channels of Plate Heat Exchangers written by Dragan N. Mandic and published by Eliva Press. This book was released on 2021-03-06 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: The plate heat exchangers are one of the most effective types of compact heat exchanger with the intensification of heat transfer. Their use is represented in many industrial processes because of their compact size, low weight and cost, reduced space required for installation and maintenance, compared to tubular heat exchangers. Heat transfer in these exchangers occurs in channels of complex geometry, formed by the two opposing profiled plate heat exchangers that are touching. Fluid flows in such ducts are unsteady due to the disruption and impact in the boundary layer, the secondary-reverse flow and swirl small extent. The task this study is to compare the operating parameters of plate heat exchangers obtained by CFD simulation with the parameters of their work in real working conditions. The results show that in a certain domain Re numbers (from 8900 to 27650), CFD simulation can predict the intensity of the exchange of heat and fluid flow with few exceptions, the output temperature of the fluid and also their pressure drop. Modeling fluid flow can indicate the distribution of shear stresses which are important for predicting the contamination plate heat exchangers.

The Geometry of a Heat Exchanger (CFD/Flow Simulation)

Author : Benno Schönstein
Publisher : GRIN Verlag
ISBN 13 : 3346554112
Total Pages : 48 pages
Book Rating : 4.3/5 (465 download)

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Book Synopsis The Geometry of a Heat Exchanger (CFD/Flow Simulation) by : Benno Schönstein

Download or read book The Geometry of a Heat Exchanger (CFD/Flow Simulation) written by Benno Schönstein and published by GRIN Verlag. This book was released on 2021-12-10 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research Paper (undergraduate) from the year 2021 in the subject Engineering - Mechanical Engineering, grade: 1,7, Munich University of Applied Sciences (Fakultät 03), language: English, abstract: Objective of this project work is the investigation of the geometry of a heat exchanger. The main purpose of a heat exchanger is the exchange of heat between two fluids. Therefore, the final flow and temperature field shall be analyzed. Heat exchangers are widely used in all sorts of engineering purposes. One of the most known examples for the use of a heat exchanger is found in an engine. Engines run optimal at a certain temperature. This is where the heat exchanger comes into play. Engine coolant is pumped through canals in the engine and transports the built-up heat away. This liquid is warmer now and must be cooled down again. It therefore goes through the heat exchanger, where the relatively cold air from the environment flows past the coils with the liquid and cools the engine coolant. The cycle repeats itself as long as the engine is running. The procedure is as follows. First, the creation of the geometry will be explained. Then the meshes shall be analyzed based on a description of the quality, grid convergence study and the energy balances between the heat fluxes. After an optimal mesh for further investigation has been chosen, different turbulence models are going to be investigated on the basis of turbulence values, pressure loss and heat transfer coefficients, which will be compared to the flow filament theory. Then a final investigation will be done with the turbulence model with the best results. Thereby the most important flow values for inner as well as outer flow, radial temperature distribution and the specific cooling power of the heat exchanger will be discussed.

CFD Investigation of Heat Exchangers with Circular and Elliptic Cross-sectional Channels

Author : Ruslan R. Aliev
Publisher :
ISBN 13 :
Total Pages : 177 pages
Book Rating : 4.:/5 (949 download)

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Book Synopsis CFD Investigation of Heat Exchangers with Circular and Elliptic Cross-sectional Channels by : Ruslan R. Aliev

Download or read book CFD Investigation of Heat Exchangers with Circular and Elliptic Cross-sectional Channels written by Ruslan R. Aliev and published by . This book was released on 2015 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design of the fluid flow and heat transfer components utilizing the Computational Fluid Dynamics (CFD) is relatively new yet cheaper and accurate method that becomes popular and reliable today. In this thesis, design of a heat exchanger using CFD analysis technique is considered. A key investigation of this devise is the selection of the tubes and connection them to inlet and outlet manifolds. Correctly selected tube size and tube cross section impacts the heat exchanger performance.Thermal and hydrodynamic performance of the flow in circular and elliptic tubes connected to the inlet and outlet manifolds have been computationally investigated for maximum Figure of Merit. The tube with high Figure of Merit is the one with high heat transfer rate and low pressure drop. The tube has four different configurations of the cross section: a circular tube and three elliptic tubes with aspect ratios = 0.75, 0.50, and 0.25. All tubes are constrained to have the same wetted perimeter and the length, thus have the same heat transfer area. The tube is a smooth straight tube that has the length of 0.3048 m (12 in.) and wetted perimeter of 0.0798 m (3.1416 in.). The tube wall thickness is negligible. The contribution of the inlet and outlet manifolds is examined. A wide range of Reynolds numbers is covered, Re =100 (laminar flow), 10,000 (transitional flow), and 20,000 (turbulent flow). ANSYS FLUENT commercial code has been utilized in this investigation. The code was validated matching with experimental correlations (for developing hydrodynamic and thermal flow) available in the literature. The CFD simulation results were in agreement with the experimental correlation within 5%.This investigation started with simulating 12 different flow conditions inside the tubes without manifolds: three sets with four different tube options (as stated above) in each set. Each set represents the different flow regime: laminar transitional and turbulent with set Reynold number value, as noted earlier. All CFD simulation results were evaluated for their Figure of Merit (0́−Goodness0́+ factor). The elliptic tube with aspect ratio = 0.25 showed the highest figure of merit for all cases of Re. In the following stage of this research the results of selected tube (aspect ratio = 0.25) was integrated with inlet and outlet manifolds. In this scenario only laminar and turbulent flow regimes were examined. The contribution of the inlet and outlet manifolds overall resulted a negative effect. The reasons of that impact are the following: (1) the inlet flow condition into the tube is no longer uniform (as was assumed in the earlier study), (2) the pressure drop in the manifolds are significantly higher than that in the tube. and (3) the tube length investigated is short. Despite significantly improved thermal characteristics of the tube flow after adding the manifolds, the magnitude of increased friction factor influenced the value of Figure of Merit.

Numerical Simulation of Heat Exchangers

Author : W. J. Minkowycz
Publisher : CRC Press
ISBN 13 : 1315355302
Total Pages : 273 pages
Book Rating : 4.3/5 (153 download)

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Book Synopsis Numerical Simulation of Heat Exchangers by : W. J. Minkowycz

Download or read book Numerical Simulation of Heat Exchangers written by W. J. Minkowycz and published by CRC Press. This book was released on 2017-04-07 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with certain aspects of material science, particularly with the release of thermal energy associated with bond breaking. It clearly establishes the connection between heat transfer rates and product quality. The editors then sharply draw the thermal distinctions between the various categories of welding processes, and demonstrate how these distinctions are translated into simulation model uniqueness. The book discusses the incorporation of radiative heat transfer processes into the simulation model.

Shape and Structure, from Engineering to Nature

Author : Adrian Bejan
Publisher : Cambridge University Press
ISBN 13 : 9780521793889
Total Pages : 370 pages
Book Rating : 4.7/5 (938 download)

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Book Synopsis Shape and Structure, from Engineering to Nature by : Adrian Bejan

Download or read book Shape and Structure, from Engineering to Nature written by Adrian Bejan and published by Cambridge University Press. This book was released on 2000-10-16 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seemingly universal geometric forms unite the flow systems of engineering and nature. For example, tree-shaped flows can be seen in computers, lungs, dendritic crystals, urban street patterns, and communication links. In this groundbreaking book, Adrian Bejan considers the design and optimization of engineered systems and discovers a deterministic principle of the generation of geometric form in natural systems. Shape and structure spring from the struggle for better performance in both engineering and nature. This idea is the basis of the new constructal theory: the objective and constraints principle used in engineering is the same mechanism from which the geometry in natural flow systems emerges. From heat exchangers to river channels, the book draws many parallels between the engineered and the natural world. Among the topics covered are mechanical structure, thermal structure, heat trees, ducts and rivers, turbulent structure, and structure in transportation and economics. The numerous illustrations, examples, and homework problems in every chapter make this an ideal text for engineering design courses. Its provocative ideas will also appeal to a broad range of readers in engineering, natural sciences, economics, and business.

Numerical Simulation of Heat Exchangers

Author : W. J. Minkowycz
Publisher : CRC Press
ISBN 13 : 1482250209
Total Pages : 230 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Numerical Simulation of Heat Exchangers by : W. J. Minkowycz

Download or read book Numerical Simulation of Heat Exchangers written by W. J. Minkowycz and published by CRC Press. This book was released on 2017-04-07 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with certain aspects of material science, particularly with the release of thermal energy associated with bond breaking. It clearly establishes the connection between heat transfer rates and product quality. The editors then sharply draw the thermal distinctions between the various categories of welding processes, and demonstrate how these distinctions are translated into simulation model uniqueness. The book discusses the incorporation of radiative heat transfer processes into the simulation model.

Computational Fluid Dynamics and Heat Transfer

Author : Ryoichi Amano
Publisher : WIT Press
ISBN 13 : 1845641442
Total Pages : 513 pages
Book Rating : 4.8/5 (456 download)

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Book Synopsis Computational Fluid Dynamics and Heat Transfer by : Ryoichi Amano

Download or read book Computational Fluid Dynamics and Heat Transfer written by Ryoichi Amano and published by WIT Press. This book was released on 2011 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat transfer and fluid flow issues are of great significance and this state-of-the-art edited book with reference to new and innovative numerical methods will make a contribution for researchers in academia and research organizations, as well as industrial scientists and college students. The book provides comprehensive chapters on research and developments in emerging topics in computational methods, e.g., the finite volume method, finite element method as well as turbulent flow computational methods. Fundamentals of the numerical methods, comparison of various higher-order schemes for convection-diffusion terms, turbulence modeling, the pressure-velocity coupling, mesh generation and the handling of arbitrary geometries are presented. Results from engineering applications are provided. Chapters have been co-authored by eminent researchers.

Turbulence Modelling Approaches

Author : Konstantin Volkov
Publisher : BoD – Books on Demand
ISBN 13 : 9535133497
Total Pages : 252 pages
Book Rating : 4.5/5 (351 download)

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Book Synopsis Turbulence Modelling Approaches by : Konstantin Volkov

Download or read book Turbulence Modelling Approaches written by Konstantin Volkov and published by BoD – Books on Demand. This book was released on 2017-07-26 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accurate prediction of turbulent flows remains a challenging task despite considerable work in this area and the acceptance of CFD as a design tool. The quality of the CFD calculations of the flows in engineering applications strongly depends on the proper prediction of turbulence phenomena. Investigations of flow instability, heat transfer, skin friction, secondary flows, flow separation, and reattachment effects demand a reliable modelling and simulation of the turbulence, reliable methods, accurate programming, and robust working practices. The current scientific status of simulation of turbulent flows as well as some advances in computational techniques and practical applications of turbulence research is reviewed and considered in the book.

Plate Heat Exchangers

Author : Bengt Sundén
Publisher : WIT Press
ISBN 13 : 185312737X
Total Pages : 289 pages
Book Rating : 4.8/5 (531 download)

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Book Synopsis Plate Heat Exchangers by : Bengt Sundén

Download or read book Plate Heat Exchangers written by Bengt Sundén and published by WIT Press. This book was released on 2007 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plate-and-frame heat exchangers (PHEs) are used in many different processes at a broad range of temperatures and with a variety of substances. Research into PHEs has increased considerably in recent years and this is a compilation of knowledge on the subject. Containing invited contributions from prominent and active investigators in the area, it should enable graduate students, researchers, and research and development engineers in industry to achieve a better understanding of transport processes. Some guidelines for design and development are also included.

Engineering Turbulence Modelling and Experiments 5

Author : W. Rodi
Publisher : Elsevier
ISBN 13 : 008053094X
Total Pages : 1029 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Engineering Turbulence Modelling and Experiments 5 by : W. Rodi

Download or read book Engineering Turbulence Modelling and Experiments 5 written by W. Rodi and published by Elsevier. This book was released on 2002-08-21 with total page 1029 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence is one of the key issues in tackling engineering flow problems. As powerful computers and accurate numerical methods are now available for solving the flow equations, and since engineering applications nearly always involve turbulence effects, the reliability of CFD analysis depends increasingly on the performance of the turbulence models. This series of symposia provides a forum for presenting and discussing new developments in the area of turbulence modelling and measurements, with particular emphasis on engineering-related problems. The papers in this set of proceedings were presented at the 5th International Symposium on Engineering Turbulence Modelling and Measurements in September 2002. They look at a variety of areas, including: Turbulence modelling; Direct and large-eddy simulations; Applications of turbulence models; Experimental studies; Transition; Turbulence control; Aerodynamic flow; Aero-acoustics; Turbomachinery flows; Heat transfer; Combustion systems; Two-phase flows. These papers are preceded by a section containing 6 invited papers covering various aspects of turbulence modelling and simulation as well as their practical application, combustion modelling and particle-image velocimetry.

Engineering Heat Transfer

Author : William S. Janna
Publisher : CRC Press
ISBN 13 : 1439883149
Total Pages : 692 pages
Book Rating : 4.4/5 (398 download)

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Book Synopsis Engineering Heat Transfer by : William S. Janna

Download or read book Engineering Heat Transfer written by William S. Janna and published by CRC Press. This book was released on 2018-10-03 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most heat transfer texts include the same material: conduction, convection, and radiation. How the material is presented, how well the author writes the explanatory and descriptive material, and the number and quality of practice problems is what makes the difference. Even more important, however, is how students receive the text. Engineering Heat Transfer, Third Edition provides a solid foundation in the principles of heat transfer, while strongly emphasizing practical applications and keeping mathematics to a minimum. New in the Third Edition: Coverage of the emerging areas of microscale, nanoscale, and biomedical heat transfer Simplification of derivations of Navier Stokes in fluid mechanics Moved boundary flow layer problems to the flow past immersed bodies chapter Revised and additional problems, revised and new examples PDF files of the Solutions Manual available on a chapter-by-chapter basis The text covers practical applications in a way that de-emphasizes mathematical techniques, but preserves physical interpretation of heat transfer fundamentals and modeling of heat transfer phenomena. For example, in the analysis of fins, actual finned cylinders were cut apart, fin dimensions were measures, and presented for analysis in example problems and in practice problems. The chapter introducing convection heat transfer describes and presents the traditional coffee pot problem practice problems. The chapter on convection heat transfer in a closed conduit gives equations to model the flow inside an internally finned duct. The end-of-chapter problems proceed from short and simple confidence builders to difficult and lengthy problems that exercise hard core problems solving ability. Now in its third edition, this text continues to fulfill the author’s original goal: to write a readable, user-friendly text that provides practical examples without overwhelming the student. Using drawings, sketches, and graphs, this textbook does just that. PDF files of the Solutions Manual are available upon qualifying course adoptions.

Evaluation of the Boundary Conditions in CFD Modeling of Heat Transfer in the 3D Chevron Type Plate Heat Exchanger

Author : Tiina M. Pääkkönen
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (129 download)

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Book Synopsis Evaluation of the Boundary Conditions in CFD Modeling of Heat Transfer in the 3D Chevron Type Plate Heat Exchanger by : Tiina M. Pääkkönen

Download or read book Evaluation of the Boundary Conditions in CFD Modeling of Heat Transfer in the 3D Chevron Type Plate Heat Exchanger written by Tiina M. Pääkkönen and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

CFD Techniques and Thermo-Mechanics Applications

Author : Zied Driss
Publisher : Springer
ISBN 13 : 3319709453
Total Pages : 208 pages
Book Rating : 4.3/5 (197 download)

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Book Synopsis CFD Techniques and Thermo-Mechanics Applications by : Zied Driss

Download or read book CFD Techniques and Thermo-Mechanics Applications written by Zied Driss and published by Springer. This book was released on 2018-02-05 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on CFD (Computational Fluid Dynamics) techniques and the recent developments and research works in thermo-mechanics applications. It is devoted to the publication of basic and applied studies broadly related to this area. The chapters present the development of numerical methods, computational techniques, and case studies in the thermo-mechanics applications. They offer the fundamental knowledge for using CFD in real thermo-mechanics applications and complex flow problems through new technical approaches. Also, they discuss the steps in the CFD process and provide benefits and issues when using the CFD analysis in understanding of complicated flow phenomena and its use in the design process. The best practices for reducing errors and uncertainties in CFD analysis are also discussed. The presented case studies and development approaches aim to provide the readers, such as engineers and PhD students, the fundamentals of CFD prior to embarking on any real simulation project. Additionally, engineers supporting or being supported by CFD analysts can benefit from this book.

Compact Heat Exchangers

Author : J.E. Hesselgreaves
Publisher : Elsevier
ISBN 13 : 0080529542
Total Pages : 417 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Compact Heat Exchangers by : J.E. Hesselgreaves

Download or read book Compact Heat Exchangers written by J.E. Hesselgreaves and published by Elsevier. This book was released on 2001-05-08 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the ideas and industrial concepts in compact heat exchanger technology that have been developed in the last 10 years or so. Historically, the development and application of compact heat exchangers and their surfaces has taken place in a piecemeal fashion in a number of rather unrelated areas, principally those of the automotive and prime mover, aerospace, cryogenic and refrigeration sectors. Much detailed technology, familiar in one sector, progressed only slowly over the boundary into another sector. This compartmentalisation was a feature both of the user industries themselves, and also of the supplier, or manufacturing industries. These barriers are now breaking down, with valuable cross-fertilisation taking place. One of the industrial sectors that is waking up to the challenges of compact heat exchangers is that broadly defined as the process sector. If there is a bias in the book, it is towards this sector. Here, in many cases, the technical challenges are severe, since high pressures and temperatures are often involved, and working fluids can be corrosive, reactive or toxic. The opportunities, however, are correspondingly high, since compacts can offer a combination of lower capital or installed cost, lower temperature differences (and hence running costs), and lower inventory. In some cases they give the opportunity for a radical re-think of the process design, by the introduction of process intensification (PI) concepts such as combining process elements in one unit. An example of this is reaction and heat exchange, which offers, among other advantages, significantly lower by-product production.To stimulate future research, the author includes coverage of hitherto neglected approaches, such as that of the Second Law (of Thermodynamics), pioneered by Bejan and co- workers. The justification for this is that there is increasing interest in life-cycle and sustainable approaches to industrial activity as a whole, often involving exergy (Second Law) analysis. Heat exchangers, being fundamental components of energy and process systems, are both savers and spenders of exergy, according to interpretation.

Heat Transfer XIII

Author : B. Sundén
Publisher : WIT Press
ISBN 13 : 1845647947
Total Pages : 549 pages
Book Rating : 4.8/5 (456 download)

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Book Synopsis Heat Transfer XIII by : B. Sundén

Download or read book Heat Transfer XIII written by B. Sundén and published by WIT Press. This book was released on 2014-07-02 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat Transfer XIII: Simulation and Experiments in Heat and Mass Transfer contains the proceedings of the thirteenth conference in the well established series on Simulation and Experiments in Heat Transfer and its applications. Advances in computational methods for solving and understanding heat transfer problems continue to be important because heat transfer topics and related phenomena are commonly of a complex nature and different mechanisms like heat conduction, convection, turbulence, thermal radiation and phase change as well as chemical reactions may occur simultaneously. Typically, applications are found in heat exchangers, gas turbine cooling, turbulent combustion and fires, fuel cells, batteries, micro- and mini- channels, electronics cooling, melting and solidification, chemical processing etc. Heat Transfer might be regarded as an established and mature scientific discipline, but it has played a major role in new emerging areas such as sustainable development and reduction of greenhouse gases as well as for micro- and nano- scale structures and bioengineering. Non-linear phenomena other than momentum transfer may occur due to temperature-dependent thermophysical properties. In engineering design and development, reliable and accurate computational methods are requested to replace or complement expensive and time consuming experimental trial an error work. Tremendous advancements have been achieved during recent years due to improved numerical solution methods for non-linear partial differential equations, turbulence modelling advancements and developments of computers and computing algorithms to achieve efficient and rapid simulations. Nevertheless, to further progress in computational methods requires developments in theoretical and predictive procedures – both basic and innovative – and in applied research. Accurate experimental investigations are needed to validate the numerical calculations. Topics covered include: Heat transfer in energy producing devices; Heat transfer enhancements; Heat exchangers; Natural and forced convection and radiation; Multiphase flow heat transfer; Modelling and experiments; Heat recovery; Heat and mass transfer problems; Environmental heat transfer; Experimental and measuring technologies; Thermal convert studies.

Turbulence Models for Computational Fluid Dynamics

Author : M. Salih KIRKGÖZ
Publisher : Akademisyen Kitabevi
ISBN 13 : 6257409632
Total Pages : 24 pages
Book Rating : 4.2/5 (574 download)

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Book Synopsis Turbulence Models for Computational Fluid Dynamics by : M. Salih KIRKGÖZ

Download or read book Turbulence Models for Computational Fluid Dynamics written by M. Salih KIRKGÖZ and published by Akademisyen Kitabevi. This book was released on 2021-06-15 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Turbulence Models and Their Application

Author : Tuncer Cebeci
Publisher : Springer Science & Business Media
ISBN 13 : 9783540402886
Total Pages : 140 pages
Book Rating : 4.4/5 (28 download)

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Book Synopsis Turbulence Models and Their Application by : Tuncer Cebeci

Download or read book Turbulence Models and Their Application written by Tuncer Cebeci and published by Springer Science & Business Media. This book was released on 2003-12-04 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: After a brief review of the more popular turbulence models, the author presents and discusses accurate and efficient numerical methods for solving the boundary-layer equations with turbulence models based on algebraic formulas (mixing length, eddy viscosity) or partial-differential transport equations. A computer program employing the Cebeci-Smith model and the k-e model for obtaining the solution of two-dimensional incompressible turbulent flows without separation is discussed in detail and is presented in the accompanying CD.