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  • 1
    Electronic Resource
    Electronic Resource
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 1 (1989), S. 1656-1665 
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The Stokes flow induced by the slow evaporation or condensation of two spheres is studied. The phase-change velocity is prescribed and uniform over the surfaces of the spheres. Exact expressions are obtained for the streamfunction and the drag forces. Simpler expressions applicable to a variety of limit cases (distant spheres, a source and a sphere, and a sphere and a plane) are presented. When only one sphere is evaporating, depending on the distance from the other sphere, the flow may exhibit a variety of interesting behaviors such as smooth-boundary separation, closed recirculating eddies, and infinite open eddies.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 30 (1987), S. 3626-3628 
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An equation accounting to lowest order for the effects of liquid compressibility on the radial motion of a spherical bubble is deduced from the statement of energy conservation for the liquid.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 1 (1989), S. 1784-1795 
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A linear analysis of the effects of compressibility on the stability of two superposed isentropic fluids is presented. The results of the analysis, which differ from those available in the literature for other unperturbed stratifications, are illustrated with several numerical examples. It is found that, in the present conditions, compressibility has a stabilizing effect at small wavelengths and a destabilizing effect at long wavelengths. The magnitude of these effects is, however, small in most circumstances. A physical basis for the interpretation of the results is also described in qualitative terms. This discussion sheds some light on the nature of the differences between the present results and those relative to the case of isothermal stratification.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Meccanica 14 (1979), S. 34-47 
    ISSN: 1572-9648
    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: Summary The principles of conservation of mass, momentum, and energy require that certain relationships between the flow fields be satisfied at a liquid-vapor interface. These relationships are derived in a unified way from a generalization of Kotchine's theorem which includes explicitly surface sources for momentum and energy. The case of a multi-component mixture is also considered. Finally, other boundary conditions required to obtain the full solution to a liquid-vapour flow problem are outlined and discussed. Our results are applicable to other fluid-fluid interfaces as well.
    Notes: Sommario I principi di conservazione della massa, della quantità di moto e dell'energia richiedono che esistano relazioni ben definite fra i campi di densità, velocità, pressione e temperatura alla superficie di separazione fra un liquido e il suo vapore. In questo studio tali relazioni vengono derivate a partire da una generalizzazione del teorema di Kotchine in cui si tiene conto esplicitamente delle sorgenti superficiali per la quantità di moto e l'energia. Viene anche discusso il caso in cui sia presente più di una specie chimica. Infine, si considerano e si discutono le altre condizioni al contorno necessarie per ottenere la soluzione completa di un problema coinvolgente simultaneamenta la fase liquida e quella di vapore.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Meccanica 12 (1977), S. 214-235 
    ISSN: 1572-9648
    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: Summary A review of topics of current interest in the dynamics of gas and vapor bubbles in liquids under conditions of no relative motion is presented. The aspects of gas bubble dynamics considered include: radiation pressure (Bjerknes) forces, analytical and numerical studies of transient forced oscillations, connection of the subharmonic resonance with the onset of acoustic cavitation, thermal behaviour of the gas in small-amplitude and large-amplitude oscillations. For vapour bubbles a detailed discussion of the growth process is given. A scaled formulation of this process is also presented and phenomena connected to the forced oscillations are discussed. Some aspects of the dynamics of vapor bubbles in «cold» liquids (i.e. cavitation bubbles) are also included. Finally several phenomena encountered in the dynamics of non-spherical bubbles are reviewed, namely the effect of viscosity on the stability of the spherical shape, a variational formulation, and phase-change effects.
    Notes: Sommario Si presenta una rassegna di argomenti attualmente oggetto di ricerca nella dinamica di bolle di gas e di vapore nei liquidi. La discussione è limitata al caso in cui non esista moto di traslazione relativo fra le fasi. Gli aspetti considerati della dinamica di bolle di gas includono: forze di pressione di radiazione (o di Bjerknes), studi analitici e numerici dei transitori nelle oscillazioni forzate, rapporto fra la risonanza subarmonica e l'apparizione di fenomeni di cavitazione acustica, comportamento termico del gas contenuto nella bolla durante oscillazioni di piccola ampiezza e di grande ampiezza. Per le bolle di vapore si presenta una discussione dettagliata del processo di crescita, una formulazione di similarità di tale processo, e alcuni fenomeni connessi alle oscillazioni forzate. Vengono inoltre discussi alcuni aspetti della dinamica di bolle di vapore in liquidi «freddi» (cioè bolle di cavitazione). Infine si considerano alcune questioni connesse alla dinamica di bolle non sferiche, e cioè l'effetto della viscosità sulla stabilità della forma sferica, una formulazione variazionale, e fenomeni relativi al cambiamento di fase.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Flow, turbulence and combustion 38 (1982), S. 145-164 
    ISSN: 1573-1987
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Several aspects of small-amplitude oscillations of bubbles containing gas, vapor, or a gas-vapor mixture are discussed. An application to pressure-wave propagation in a bubbly liquid is described. Nonlinear forced oscillations are considered in the light of recent research on forced oscillations of nonlinear systems. The growth of vapor bubbles, an extension of the Rayleigh-Plesset equation to non-Newtonian liquids and appreciable mass transfer at the interface, and a boundary integral numerical method for nonspherical cavitation bubble dynamics are also briefly discussed.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 11 (1977), S. 431-438 
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: A direct numerical method is presented for the solution of classes of non-linear, singular Volterra integral and integro-differential equations of the types where y is the unknown and the Fs and Gs are given but to a large extent arbitrary functions of their arguments. The adaptation of the method to other equations, in particular with different kernels, is immediate.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Publication Date: 2003-05-22
    Print ISSN: 1063-651X
    Electronic ISSN: 1095-3787
    Topics: Physics
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  • 9
    Publication Date: 2013-05-21
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 10
    Publication Date: 2013-06-01
    Print ISSN: 0034-6748
    Electronic ISSN: 1089-7623
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
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