Stability and Instability of Thermocapillary Convection in Models of the Float-Zone Crystal-Growth Process

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Publisher : Independently Published
ISBN 13 : 9781792844089
Total Pages : 28 pages
Book Rating : 4.8/5 (44 download)

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Book Synopsis Stability and Instability of Thermocapillary Convection in Models of the Float-Zone Crystal-Growth Process by : National Aeronautics and Space Adm Nasa

Download or read book Stability and Instability of Thermocapillary Convection in Models of the Float-Zone Crystal-Growth Process written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-03 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: This project was concerned with the determination of conditions of guaranteed stability and instability for thermocapillary convection in a model of the float-zone crystal-growth process. This model, referred to as the half-zone, was studied extensively, both experimentally and theoretically. Our own earlier research determined, using energy-stability theory, sufficient conditions for stability to axisymmetric disturbances. Nearly all results computed were for the case of a liquid with Prandtl Number Pr = 1. Attempts to compute cases for higher Prandtl numbers to allow comparison with the experimental results of other researchers were unsuccessful, but indicated that the condition guaranteeing stability against axisymmetric disturbances would be a value of the Marangoni number (Ma), significantly higher than that at which oscillatory convection was observed experimentally. Thus, additional results were needed to round out the stability picture for this model problem. The research performed under this grant consisted of the following: (1) computation of energy-stability limits for non-axisymmetric disturbances; (2) computation of linear-stability limits for axisymmetric and non-axisymmetric disturbances; (3) numerical simulation of the basic state for half- and full-zones with a deformable free surface; and (4) incorporation of radiation heat transfer into a model energy-stability problem. Each of these is summarized briefly below. Neitzel, G. P. NASA-CR-192695, NAS 1.26:192695 NAG3-1221...

Stability and Instability of Thermocapillary Convection in Models of the Float-zone Crystal-growth Process

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Total Pages : pages
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Book Synopsis Stability and Instability of Thermocapillary Convection in Models of the Float-zone Crystal-growth Process by : G. Paul Neitzel

Download or read book Stability and Instability of Thermocapillary Convection in Models of the Float-zone Crystal-growth Process written by G. Paul Neitzel and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Linear Stability of Thermocapillary Convection in a Model of the Float-zone Crystal-growth Process

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Publisher :
ISBN 13 :
Total Pages : 162 pages
Book Rating : 4.:/5 (267 download)

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Book Synopsis Linear Stability of Thermocapillary Convection in a Model of the Float-zone Crystal-growth Process by : Kai-Ti R. Chang

Download or read book Linear Stability of Thermocapillary Convection in a Model of the Float-zone Crystal-growth Process written by Kai-Ti R. Chang and published by . This book was released on 1991 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Energy-stability of Thermocapillary Convection in a Model of Float-zone Crystal Growth

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ISBN 13 :
Total Pages : 284 pages
Book Rating : 4.:/5 (224 download)

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Book Synopsis Energy-stability of Thermocapillary Convection in a Model of Float-zone Crystal Growth by : Yonghong Shen

Download or read book Energy-stability of Thermocapillary Convection in a Model of Float-zone Crystal Growth written by Yonghong Shen and published by . This book was released on 1989 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Thermocapillary Convection in Models of Crystal Growth

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Publisher : Springer
ISBN 13 : 9783662147368
Total Pages : 226 pages
Book Rating : 4.1/5 (473 download)

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Book Synopsis Thermocapillary Convection in Models of Crystal Growth by : Hendrik C. Kuhlmann

Download or read book Thermocapillary Convection in Models of Crystal Growth written by Hendrik C. Kuhlmann and published by Springer. This book was released on 2014-03-12 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: This critical overview describes fluid flow driven by the thermocapillary effect in models of crystal growth. Simple models are the floating-zone technique and the open-boat technique. Basic equations, boundary layer scaling, stability analysis, pattern formation and additional buoyancy are discussed. Particular emphasis is given to the understanding of the physics of flow. This reference book gives a state-of-the-art report and reviews the literature available.

Linear Stability Theory of Thermo-capillary Convection in a Model of Float-zone Crystal Growth

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)

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Book Synopsis Linear Stability Theory of Thermo-capillary Convection in a Model of Float-zone Crystal Growth by : G. P. Neitzel

Download or read book Linear Stability Theory of Thermo-capillary Convection in a Model of Float-zone Crystal Growth written by G. P. Neitzel and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Role of Convection and Fluid Flow in Solidification and Crystal Growth

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Publisher : Elsevier
ISBN 13 : 1483213781
Total Pages : 153 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis The Role of Convection and Fluid Flow in Solidification and Crystal Growth by : D. T. J. Hurle

Download or read book The Role of Convection and Fluid Flow in Solidification and Crystal Growth written by D. T. J. Hurle and published by Elsevier. This book was released on 2014-12-01 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physicochemical Hydrodynamics: The Role of Convection and Fluid Flow in Solidification and Crystal Growth focuses on the processes, methodologies, reactions, and approaches involved in solidification and crystal growth brought about by convection and fluid flow. The selection first offers information on the techniques of crystal growth, convection in Czochralski growth melts, and Marangoni effects in crystal growth melts. Discussions focus on crystal growth under reduced gravity, Marangoni effects in growth from a crucible, thermocapillary convection in floating zones, near-field flow, Czochralski bulk flow, and melt, solution, and vapor growth. The text then examines the effect of convective flow on morphological stability and time-dependent natural convection in crystal growth systems. The manuscript elaborates on the effects of fluid flow on the solidification of industrial castings and ingots and application of holographic interferometry to hydrodynamic phenomena in crystal growth. Topics include effects of fluid flow on crystal structure, importance of macrosegregation defects in castings, value of convection in crystal growth, and occurrence of thermal oscillations in fluids. The selection is a dependable reference for readers interested in the role of convection and fluid flow in solidification and crystal growth.

Energy Stability of Thermocapillary Convection in Models of the Float-zone Process

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Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (23 download)

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Book Synopsis Energy Stability of Thermocapillary Convection in Models of the Float-zone Process by : George Paul Neitzel

Download or read book Energy Stability of Thermocapillary Convection in Models of the Float-zone Process written by George Paul Neitzel and published by . This book was released on 1985 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Crystal Growth from the Melt

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Publisher : Springer Science & Business Media
ISBN 13 : 3642732089
Total Pages : 145 pages
Book Rating : 4.6/5 (427 download)

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Book Synopsis Crystal Growth from the Melt by : Georg Müller

Download or read book Crystal Growth from the Melt written by Georg Müller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: 1 The content ofthis article is based on a German book version ) which appeared at the end of the year 1986. The author tried to incorporate - as far as possible - new important results published in the last year. But the literature in the field of "convection and inhomogeneities in crystal growth from the melt" has increased so much in the meantime that the reader and the collegues should make allowance for any incompleteness, also in the case that their important contributions have not been cited. This could for example hold for problems related to the Czochralski growth. But especially for this topic the reader may be refered to the forthcoming volume of this series, which contains special contributions on "Surface Tension Driven Flow in Crystal Growth Melts" by D. Schwabe and on "Convection in Czochralski Melts" by M. Mihelcic, W. Uelhoff, H. Wenzl and K. Wingerath. The preparation of this manuscript has been supported by several women whose help is gratefully acknowledged by the autor: Mrs. Gisela Neuner for the type writing, Mrs. Abigail Sanders, Mrs. Fiona Eels and especially Prof. Nancy Haegel for their help in questions of the English language and Mrs. Christa Weber for reading corrections. Also the good cooperation with the Springer Verlag, especially Mrs. Bohlen and with the managing editor of Crystals, Prof. H. C. Freyhardt, who critically read the manuscript, is acknowledged.

NASA Technical Memorandum

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Publisher :
ISBN 13 :
Total Pages : 464 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis NASA Technical Memorandum by : United States. National Aeronautics and Space Administration

Download or read book NASA Technical Memorandum written by United States. National Aeronautics and Space Administration and published by . This book was released on 1992 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Heat Transfer, Fluid Flow and Interface Shapes in Floating-zone Crystal Growth

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Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.:/5 (89 download)

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Book Synopsis Heat Transfer, Fluid Flow and Interface Shapes in Floating-zone Crystal Growth by : Chung-Wen Lan

Download or read book Heat Transfer, Fluid Flow and Interface Shapes in Floating-zone Crystal Growth written by Chung-Wen Lan and published by . This book was released on 1991 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Floating Zone Convection in Crystal Growth Modeling

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Publisher :
ISBN 13 : 9787030108678
Total Pages : 155 pages
Book Rating : 4.1/5 (86 download)

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Book Synopsis Floating Zone Convection in Crystal Growth Modeling by : W. R. Hu

Download or read book Floating Zone Convection in Crystal Growth Modeling written by W. R. Hu and published by . This book was released on 2003 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Control of Thermocapillary Convection and Homogeneity of Floating-zone Grown Crystals by Vibration

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Publisher :
ISBN 13 :
Total Pages : 302 pages
Book Rating : 4.:/5 (357 download)

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Book Synopsis Control of Thermocapillary Convection and Homogeneity of Floating-zone Grown Crystals by Vibration by : Xuefeng Shen

Download or read book Control of Thermocapillary Convection and Homogeneity of Floating-zone Grown Crystals by Vibration written by Xuefeng Shen and published by . This book was released on 1995 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Thermocapillary Convection in Models of Crystal Growth

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Publisher : Springer
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.X/5 (4 download)

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Book Synopsis Thermocapillary Convection in Models of Crystal Growth by : Hendrik C. Kuhlmann

Download or read book Thermocapillary Convection in Models of Crystal Growth written by Hendrik C. Kuhlmann and published by Springer. This book was released on 1999 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This critical overview describes fluid flow driven by the thermocapillary effect in models of crystal growth. Simple models are the floating-zone technique and the open-boat technique. Basic equations, boundary layer scaling, stability analysis, pattern formation and additional buoyancy are discussed. Particular emphasis is given to the understanding of the physics of flow. This reference book gives a state-of-the-art report and reviews the literature available.

Microgravity Science and Applications Program Tasks

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ISBN 13 :
Total Pages : 320 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Microgravity Science and Applications Program Tasks by :

Download or read book Microgravity Science and Applications Program Tasks written by and published by . This book was released on 1992 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Microgravity Science and Applications Program Tasks

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Publisher :
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Microgravity Science and Applications Program Tasks by : United States. Office of Space Science and Applications

Download or read book Microgravity Science and Applications Program Tasks written by United States. Office of Space Science and Applications and published by . This book was released on 1991 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Microgravity Science and Applications Program Tasks, 1990 Revision

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Publisher :
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Microgravity Science and Applications Program Tasks, 1990 Revision by :

Download or read book Microgravity Science and Applications Program Tasks, 1990 Revision written by and published by . This book was released on 1991 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: