A New Method for the Calculation of Momentum, Heat and Mass Transfer in Laminar Boundary Layer Flow PDF Download
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Author: Richard Mark Sisson
Publisher:
ISBN:
Category : Laminar flow
Languages : en
Pages : 160
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Book Description
Merk's series solution to the momentum equation for steady two-dimensional or axisymmetrical constant-property laminar boundary layer flow was examined. Solutions were obtained to the differential equations associated with the second term in the series. Calculations using this series were made, and it was found to be unsatisfactory because the second term diverges near the point where the first term becomes imaginary. This phenomenon occurs significantly earlier than the actual separation point in every case studied. A new, formally exact series solution for momentum, heat and mass transfer in steady two- dimensional or axisymmetrical constant-property laminar boundary layers was developed. An approximation was introduced to simplify momentum transfer calculations, and an additional approximation was used for heat and mass transfer. Calculations using this method for momentum transfer with several different external velocity distributions and with both low and high rates of injection at the surface compared well with exact solutions. In every case studied, the present method was significantly more accurate than other approximate methods. Heat and mass transfer calculations compared well with experimental data taken from several investigations. Extensive tables of functions associated with the present method have been compiled.
Author: Richard Mark Sisson
Publisher:
ISBN:
Category : Laminar flow
Languages : en
Pages : 160
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Book Description
Merk's series solution to the momentum equation for steady two-dimensional or axisymmetrical constant-property laminar boundary layer flow was examined. Solutions were obtained to the differential equations associated with the second term in the series. Calculations using this series were made, and it was found to be unsatisfactory because the second term diverges near the point where the first term becomes imaginary. This phenomenon occurs significantly earlier than the actual separation point in every case studied. A new, formally exact series solution for momentum, heat and mass transfer in steady two- dimensional or axisymmetrical constant-property laminar boundary layers was developed. An approximation was introduced to simplify momentum transfer calculations, and an additional approximation was used for heat and mass transfer. Calculations using this method for momentum transfer with several different external velocity distributions and with both low and high rates of injection at the surface compared well with exact solutions. In every case studied, the present method was significantly more accurate than other approximate methods. Heat and mass transfer calculations compared well with experimental data taken from several investigations. Extensive tables of functions associated with the present method have been compiled.
Author: G. Hetsroni
Publisher: Elsevier
ISBN: 1483160505
Category : Science
Languages : en
Pages : 779
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Book Description
Proceedings of the International Symposium on Two-Phase Systems
Author: E. Elzy
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 352
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Book Description
Author: B. Thwaites
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 994
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Book Description
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 720
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Book Description
Author: R. O. Fagbenle
Publisher: Woodhead Publishing Limited
ISBN: 012817949X
Category : Science
Languages : en
Pages : 530
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Book Description
Applications of Heat, Mass and Fluid Boundary Layers brings together the latest research on boundary layers where there has been remarkable advancements in recent years. This book highlights relevant concepts and solutions to energy issues and environmental sustainability by combining fundamental theory on boundary layers with real-world industrial applications from, among others, the thermal, nuclear and chemical industries. The book's editors and their team of expert contributors discuss many core themes, including advanced heat transfer fluids and boundary layer analysis, physics of fluid motion and viscous flow, thermodynamics and transport phenomena, alongside key methods of analysis such as the Merk-Chao-Fagbenle method. This book's multidisciplinary coverage will give engineers, scientists, researchers and graduate students in the areas of heat, mass, fluid flow and transfer a thorough understanding of the technicalities, methods and applications of boundary layers, with a unified approach to energy, climate change and a sustainable future. Presents up-to-date research on boundary layers with very practical applications across a diverse mix of industries Includes mathematical analysis to provide detailed explanation and clarity Provides solutions to global energy issues and environmental sustainability
Author: De-Yi Shang
Publisher: Springer Science & Business Media
ISBN: 3642289835
Category : Science
Languages : en
Pages : 550
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Book Description
This book presents recent developments in our systematic studies of hydrodynamics and heat and mass transfer in laminar free convection, accelerating film boiling and condensation of Newtonian fluids, as well as accelerating film flow of non-Newtonian power-law fluids (FFNF). These new developments provided in this book are (i) novel system of analysis models based on the developed New Similarity Analysis Method; (ii) a system of advanced methods for treatment of gas temperature- dependent physical properties, and liquid temperature- dependent physical properties; (iii) the organically combined models of the governing mathematical models with those on treatment model of variable physical properties; (iv) rigorous approach of overcoming a challenge on accurate solution of three-point boundary value problem related to two-phase film boiling and condensation; and (v) A pseudo-similarity method of dealing with thermal boundary layer of FFNF for greatly simplifies the heat-transfer analysis and numerical calculation. A system of practical application equations on heat and mass transfer are provided in each chapter, which are formulated based on the rigorous numerical solutions with consideration of variable physical properties. In addition, in the second edition, other new research developments are further included on resolving an even big challenge associated with investigations of laminar free film condensation of vapour-gas mixture. They involve the novel methods for treatment of concentration- and temperature- dependent physical properties of vapour-gas mixture, and for rigorous solution of interfacial vapour saturation temperature, which have lead to rigorous analysis and calculation results on two-phase film flow velocity, temperature, and concentration fields, as well as condensate heat and mass transfer.
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 668
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Book Description
