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  • 1995-1999  (1)
  • 1985-1989  (4)
  • 1997  (1)
  • 1988  (4)
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  • 1995-1999  (1)
  • 1985-1989  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Technical physics letters 23 (1997), S. 276-278 
    ISSN: 1090-6533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An analysis is made of the hydrodynamic characteristics of the propagation of thermal polymerization waves in liquid media without hardening of the final polymer product. The process is described mathematically using a system of equations for the dynamics and the heat and mass transfer in a reacting liquid medium, written in the Boussinesq approximation and assuming the simplest overall polymerization reaction.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Heat and mass transfer 22 (1988), S. 347-354 
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Mit Hilfe der Methode der finiten Elemente wird eine Lösung der gekoppelten Wärmeund Stoffübertragung für die Absorption eines Dampfes, mit hoher Absorptionswärme, in einer laminaren Filmströmung beschrieben. Konvektion und Diffusion parallel und senkrecht zur Strömungsrichtung werden beobachtet. Temperaturund Massenfraktionsprofile werden gezeigt. Der Vergleich mit einer Lösung für eine ein-dimensionale Strömung und dazu senkrechter Diffusion zeigt, daß mit abnehmender Peclet-Zahl die Abweichungen zu unserem zwei-dimensionalen Modell steigen.
    Notes: Abstract A finite element solution is given for the coupled heat and mass transfer taking place when a vapour with considerable heat of absorption is absorbed into a laminar film flow. Convection and diffusion parallel and perpendicular to the direction of flow are taken into account. Temperature and mass fraction profiles across the film are given as well as results in film flow direction for several values of the Peclet number. Comparison with a solution based on one-dimensional flow and diffusion perpendicular to the flow, shows that deviations from this case by our two-dimensional solution increase for decreasing Peclet number.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of applied mechanics and technical physics 29 (1988), S. 216-224 
    ISSN: 1573-8620
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Fluid dynamics 23 (1988), S. 361-367 
    ISSN: 1573-8507
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The hydrodynamic stability of the steady spherical front of a reaction accompanied by a strong increase in viscosity taking place in a radial, centrally symmetric flow of condensed reaction medium is considered. The flow is assumed to be bounded by two permeable concentric spherical surfaces. The stability is investigated in the linear approximation with respect to small perturbations. A relation is obtained for the dependence of the perturbation growth rate on the parameters of the problem: the viscosity ratio of the medium at the front, the ratio of the boundary surface radii to the radius of the front, and the dimensionless hydrodynamic resistances of the boundary surfaces. It is shown that the front is stable over almost the entire physical region of variation of the parameters and that instability occurs only in the case of a low hydrodynamic resistance of the outer boundary surface as the front approaches.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 8 (1988), S. 351-363 
    ISSN: 0271-2091
    Keywords: Navier-Stokes equations ; Finite element method ; Viscous flow ; Free boundary flow ; Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this paper a total linearization method is derived for solving steady viscous free boundary flow problems (including capillary effects) by the finite element method. It is shown that the influence of the geometrical unknown in the totally linearized weak formulation can be expressed in terms of boundary integrals. This means that the implementation of the method is simple. Numerical experiments show that the iterative method gives accurate results and converges very fast.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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